MASTERLA—10802-MS

DE87 003802

Chemistry of Diagenetically Altered Tuffsat a Potential Nuclear Waste Repository,

Yucca Mountain, Nye County, Nevada

David E. BroxtonRichard G. WarrenRoland C. HaganGary Luedemann

DISCLAIMER

This report vas prepared as an account of work sponsored by an agency of the United StatesGovernment. Neither the United States Government nor any agency thereof, nor any of theiremployees, makes any warranty, express or implied, or assumes any legal liability or responsi-bility for the accuracy, completeness, or usefulness of any information, apparatus, product, orprocess disclosed, or represents that its use would not infringe privately owned rights. Refer-ence herein to any specific commercial product, process, or service by trade name, trademark,manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom-mendation, or favoring by the United States Government or any agency thereof. The viewsand opinions of au'hors expressed herein do not necessarily state or reflect those of theUnited States Government or any agency thereof.

Los Alamos National LaboratoryLos Alamos,New Mexico 87545

CONTENTS

ABSTRACT 1

I. INTRODUCTION 2

II. GEOLOGIC SETTING 6

III. METHODS 9

A. Whole-Rock Compositions by X-Ray Fluorescence, AtomicAbsorption, and Emission Spectrophotometry 9

B. Whole-Rock Compositions by Automated NeutronActivation Analysis . 12

C. Mineral and Glass Compositions Determined byElectron Microprobe 13

IV. RESULTS 15

V. DISCUSSION 31

VI. SUMMARY AND CONCLUSIONS 34

ACKNOWLEDGMENTS 35

REFERENCES 35

APPENDIX A: MAJOR-ELEMENT ANALYSES OF TUFFS BY X-RAYFLUORESCENCE, YUCCA MOUNTAIN, NEVADA 39

APPENDIX B. COMPARISON OF ANALYSES DETERMINED BY X-RAYFLUORESCENCE (XRF), ATOMIC ABSORPTION (AA), AND EMISSIONSPECTROPHOTOMETRY (ES) FOR DRILL CORE SAMPLES FROMYUCCA MOUNTAIN, NEVADA 49

APPENDIX C: MAJOR- AND TRACE-ELEMENT CONCENTRATIONS DETERMINED BYNEUTRON ACTIVATION ANALYSIS IN WHOLE-ROCK SAMPLES FROM DRILLCORE IN DRILL HOLES USW G-l, USW G-2, USW GU-3, AND FROMTUFF OF CALICO HILLS SAMPLES COLLECTED IN OUTCROP AT PROWPASS, NORTHERN YUCCA MOUNTAIN 52

APPENDIX D: ANALYTICAL VALUES FOR NBS STANDARDS BY AUTOMATEDNEUTRON ACTIVATION ANALYSIS 60

APPENDIX E: GLASS COMPOSITIONS DETERMINED BY ELECTRON MICROPROBEFOR TUFFS OF YUCCA MOUNTAIN, NEVADA 61

APPENDIX F: CLINOPTILOLITE COMPOSITIONS DETERMINED BY ELECTRONMICROPROBE, YUCCA MOUNTAIN, NEVADA 79

APPENDIX G: ANALCIME COMPOSITIONS DETERMINED BY ELECTRONMICROPROBE, YUCCA MOUNTAIN, NEVADA 137

APPENDIX H: AUTHIGENIC FELDSPAR COMPOSITIONS DETERMINED BYELECTRON MICROPROBE, YUCCA MOUNTAIN, NEVADA 149

FIGURES

1. Location and generalized geologic map of Yucca Mountain,Nevada, showing location of drill holes (adapted fromScott and Castellanos 1984)

2. Fence diagram showing distribution of principal zeolitictuffs at Yucca Mountain, Nevada 4

3. Schematic cross section of Yucca Mountain, Nevada, showingposition of potential repository and principal zeolitic tuffs. 5

4. Comparison of whole-rock analyses determined by x-rayfluorescence vs. analyses by atomic absorption and emissionspectrophotometry. Solid diagonal lines have a slope of one,indicating perfect correlations between analytical methods.Dashed diagonal lines represent percent deviation of x-rayfluorescence analysis from atomic absorption and emissionspectrophotometry analyses 10

5. Semi logarithmic plot showing sodium count rates as afunction of time for a variety of zeolites. Analyses wereperformed using a stationary electron microprobe beam withan accelerating potential of 15 keV. The beam was rasteredwith a 20-̂ um edge , 14

6. Logarithmic plot showing elemental ra t ios , normalized toequal aluminum contents, for zeol i t ic and unaltered t u f f s ,Yucca Mountain, Nevada 19

7. Triangular diagrams showing relat ive a lka l i andalkaline-earth contents for whole-rock samples fromdiagenetic Zones I and I I , 21

8. Triangular diagram showing relative a lka l i andalkaline-earth contents for glasses from diageneticZone I , Yucca Mountain, Nevada 24

IE

9. Triangular diagram showing relative a lka l i andalkaline-earth contents for c l i nop t i l o l i t es ofdiagenetic Zone I , Yucca Mountain, Nevada 25

10. Histogram comparing Si/Al ratios for c l i nop t i l o l i t esof Yucca Mountain, Nevada 26

11. Triangular diagrams showing relative a lka l i andalkal ine-earth contents for c l i nop t i l o l i t es ofdiagenetic Zones I I and I I I , Yucca Mountain, Nevada 27

VI

12. Triangular diagram showing re'at ive a lka l i andalkaline-earth contents for c " inopt i lo l i tes in thetu f f of Calico H i l l s at Prow Pass, northernYucca Mountain 29

13. Histogram showing d is t r ibut ion of Si/Al ratios foranalcimes, Yucca Mountain, Nevada 30

14. Histoqram showing d is t r ibut ion for sum of cations innontetrahedral sites within atthigenic potassiumfeldspar, Yucca Mountain, Nevada 30

15. Triangular diagram showing alkal i and alkaline-earthcontents for cl i nop t i l o l i t es in the unsaturated zonebelow the exploration block, Yucca Mountain, Nevada 33

TABLES

I. STRATIGRAPHY OF VOLCANIC UNITS AT YUCCA MOUNTAIN,NEVADA 7

II. REPRESENTATIVE WHOLE-ROCK COMPOSITIONS FOR TUFFS ATYUCCA MOUNTAIN, NEVADA 16

III. REPRESENTATIVE ANALYSES OF CLINOPTILOLITES DETERMINEDBY ELECTRON MICROPROBE, YUCCA MOUNTAIN, NEVADA .... 18

IV. COMPARISON OF SELECTED TRACE ELEMENTS BETWEENUNALTERED AND ALTERED TUFFS IN DIAGENETIC ZONE i,YUCCA MOUNTAIN, NEVADA 22

CHEMISTRY OF DIAGENETICALLY ALTERED TUFFS AT A POTENTIAL NUCLEAR WASTEREPOSITORY, YUCCA MOUNTAIN, NYE COUNTY, NEVADA

by

David E. Broxton, Richard G. Warren, Roland C. Hagan, and Gary Luedemann

ABSTRACT

This report describes the chemistry of diagenetically alteredtuf fs at a potential nuclear waste repository, Yucca Mountain, Nevada.These tu f fs contain substantial amounts of zeolites that are highlysorptive of certain radionuclides. Because of their widespread dis-t r i bu t ion , the zeo l i t ic tu f f s could provide important barr iers toradionuciide migration. Physical properties of these tu f fs and oftheir constituent zeolites are influenced by their chemical compo-s i t ions. This study defines the amount of chemical va r i ab i l i t y withindiagenetically altered tu f fs and within diagenetic minerals at YuccaMountain.

Major- and trace-element compositions in whole-rock samples weredetermined by a combination of x-ray fluorescence, neutron act ivat ion,atomic absorp t ion , and plasma-source emission spectrophotometrymethods. Glass, c l i n o p t i l o l i t e , analcime, and authigenic feldsparcompositions were determined by electron microprobe. Mordenite, animportant zeol i te at Yucca Mountain, is too fine grained and inter-grown with other diagenetic minerals for accurate determinations ofcompositions. New whole-rock and mineral compositions as well aspreviously published analyses for mineral chemistry are summarized inthe appendices of this report.

Zeol i t ic tuf fs at Yucca Mountain formed by diagenetic a l terat ionof rhyo l i t i c v i t r i c t u f f s . Despite their similar start ing composi-t ions, these tu f fs developed compositions that vary both ve r t i ca l l yand l a t e r a l l y . Widespread chemical variations were the resul t ofopen-system chemical diagenesis in which chemical components of thetuf fs were mobilized and redistr ibuted by groundwaters. Alkal ies,alkaline earths, and s i l i ca were the most mobile elements duringdiagenesis.

The zeo l i t i c tu f fs can be divided into three compositionalgroups: (1) calcium- and magnesium-rich t u f f s associated wi thre lat ive ly th in zones of a l terat ion in the unsaturated zone, (2) tu f fsin thick zones of a l terat ion at and below the water table that gradela tera l ly from sodic compositions on the western side of YuccaMountain to calcic compositions on the eastern side, and (3) potassictuffs at the north end of Yucca Mountain. Similar chemical variations

are found in the cl i nop t i lo l i tes that make up these t u f f s . Otherdiagenetic minerals such as analcime, potassium feldspar, and albitehave uniform compositions.

Physical properties of tuf fs and thei r constituent zeolites atYucca Mountain may be af fected by va r ia t i ons in composit ions.Properties important for assessment of repository performance includebehavior and ion exchange. The data presented in this report can beused in conjunction with experimental data to model the behavior ofYucca Mountain tuffs surrounding a high-level nuclear waste reposi-tory.

I . INTRODUCTION

Yucca Mountain is located along the southwest border of the Nevada Test

Site in south-central Nevada (Fig. 1). The U.S. Department of Energy (DOE)

and i t s subcontractors are conducting detailed studies of the ash-flow and

bedded tu f fs at Yucca Mountain to determine the su i tab i l i t y of the tuf fs as a

high-level nuclear waste repository. These studies are supported by the

Nevada Nuclear Waste Storage Investigations (NNWSI) Project as part of the DOE

Civi l ian Radioactive Waste Management Program. The NNWSI Project is managed

by the Waste Management Project Office of the DOE Nevada Operations Office.

The presence of thick zeo l i t i c tuf fs in continuous zones throughout the

region (Fig. 2) was a major consideration for choosing Yucca Mountain as a

potential repository site (Johnstone and Wol fsberg 1980). The zeolites could

provide important geologic barr iers to nuclear waste migration because they

can sorb some important radionuclides from groundwaters and thus retard

movement of radioact iv i ty away from the repository s i te . The potential

repository horizon is sited within the unsaturated zone in the lower half of

the Topopah Spring Member of the Paintbrush Tuff (Fig. 3 ) . The repository

host rock is a densely welded and devi t r i f ied t u f f consisting predominantly of

alkal i feldspars and s i l i ca minerals. Below, zeol i t ic tu f fs occur within

several strat iqraphic intervals between the repository and the water table,

providing probable ba r r i e rs to downward radionucl ide migra t ion in the

unsaturated zone. Additional zeol i t ic tuf fs below the water table provide

potential barriers to lateral radionuclide migration through the saturated

zone.

QUATERNARYALLUVIUM ANDCOLLUVIUM

MIOCENE-PLIOCENETUFFS

NORMAL FAULT,BAR AND BALL ONDOWNTHROWN SIDE;DOTTED WHERECONCEALED

DRILL HOLELOCATION

EXPLORATION BLOCK

AREA UNDER CONSIDERATIONFOR AN UNDERGROUND, HIGH-LEVEL NUCLEAR WASTEREPOSITORY

CRATER FLAT

SOUTHERN MARGIN TIMBER MTN.-OASIS VALLEY CALDERA COMPLEX

YUCCA MTN

JACKASS FLAT

J-13A

1

KILOMETERS

Fig. 1.Location and generalized geologic map of Yucca Mountain, Nevada,location of d r i l l holes (adapted from Scott and Castellanos 1984).

showing

SOUTHNORTH

EXPLORATION BLOCK-

|-300m300m

HORIZONTAL SJALESTATIC

WATER L E V E L -

INTERVALS CONTAINING 510%

CLINOPTILOLITE AND MORDENITE

1 KILOMETER

STRATIGRAPHIC CONTACTS FROM SPENGLER el al. 1979: SPENGLER el al, 1981: MALDONADO AND KOETHER. 1983:

SCOTT AND CASTELLANOS, 1983. PRELIMINARY STRATIGRAPHIC CONTACTS FOR DRILL HOLES H3, H4, H5, AND G4 PROVIDED

BY SPENGLER (PERSONAL COMMUNICATION, 1983). STATIC WATER LEVEL DATA FROM NUCLEAR HYDROLOGY GROUP, USGS.

Fig. 2.Fence diagram showing distribution of principal zeoiitic tuffs at Yucca Mountain, Nevada.

WEST

EAST

STATICWATER TABLE

HV

POSITION OFPOTENTIAL REPOSITORY

CALCIC CLINOPTILOLITES AND HEULANDITES AT TOPOF TOPOPAH SPRING BASAL VITROPHYRE (DIAGENETIC ZONE I)

INTERVALS OF ABUNDANT CLINOPTILOLITE IN DIAGENETICALLY-ALTERED NONWELDED TUFFS (DIAGENETIC ZONE II)

NUMBERS I THROUGH IV REFER TO ZEOLITIC-TUFF INTERVALNOMENCLATURE OF VANIMAN et al (1984.TABLE III).

Fig. 3.Schematic cross section of Yucca Mountain, Nevada, showing pos i t ion ofpotential repository and principal zeol i t ic t u f f s .

This report describes the chemistry of diagenetically altered tuf fs and

thei r constituent authigenie minerals at Yucca Mountain. The compositions of

these tuf fs vary considerably across the repository exploration block and

along potential pathways to the accessible environment. Experimental studies

show that physical properties of zeolites vary with composition (Bish 1984;

1985). Compositionally dependent zeolite properties important for repository

performance assessment inc lude expansion/contract ion behavior,

hydration/dehydration behavior, and ion exchange. Used in conjunction with

experimental resu l ts , data presented here can be used to model thermal and

sorptive properties of tuf fs in the repository environment.

I I . GEOLOGIC SETTING

Yucca Mountain l ies within the southwest Nevada volcanic f i e l d in the

southern Great Basin. I t is a north-trending, eas t - t i l t ed , fault-bounded

mountain range that is a remnant of a formerly extensive Miocene-Pliocene

volcanic plateau centered around the Timber Mountain-Oasis Valley caldera

complex (Christiansen et a l . 1965, 1977; Byers et al . 1976). The predominant

l i thologies at Yucca Mountain are high-si l ica rhyo l i t i c ash-flow tu f fs (Table

I ) . However, two large-volume ash-flow cooling units in the upper part of the

sequence, the Tiva Canyon and Topopah Spring Members of Paintbrush Tuff, are

compositionally zoned and grade upward from rhyol i te to quartz l a t i t e (Lipman

et a l . 1966; Byers et a l . 1976). Minor l i thologies at Yucca Mountain include

bedded tuf fs and intermediate to s i l i c i c lavas and breccias. The volcanic

rocks in this region have an aggregate thickness of over 1.8 km.

Diagenetic al terat ion is best developed in stratigraphic units that are

nonwelded throughout or in the nonwelded tops and bottoms of ash-flow cooling

units having densely welded, dev i t r i f ied in te r io rs . The nonwelded tuf fs

remained largely v i t r i c after emplacement and were highly susceptible to

alterat ion because of the i ns tab i l i t y of glass in the presence of groundwater.

During diagenesis, glass was replaced primarily by the zeolites c l i nop t i l o -

l i t e , heulandite, and mordenite. Analcime and authigenic feldspars replace

c l i nop t i l o l i t e and mordenite in the deeper parts of the volcanic sequence.

These authigenic minerals form four diagenetic mineral zones that become

progressively less hydrous with depth. These mineralogic zones are similar to

those described by I i j ima (1975, 1978, and 1980) for burial diagenesis of

volcanic ash beds in thick sedimentary sequences.

TABLE I

STRATIGRAPHY OF VOLCANIC UNITS AT YUCCA MOUNTAIN, NEVADAa

Unit ThicknessSymbol (m)

Tpc 45-150

Stratigraphic Unith

Tiva Canyon Member

Yucca Mountain Member ~-;-j 0- iu

Pah Canyon Member Tpp 0-80

Topopah Spring Menfcer Tpt 240-365

Tuff of Calico H i l l s Tht 35-290

Prow Pass Member Tcp 85-190

Bullfrog Member Tcb 90-190

Tram Menter Tct 155-385

Dacite Flow Breccia Tfb 0-120

Li th ic Ridge Tuff Tlr 185-305

Unnamed Older Tuffs Tot 365+and Lavas

Lithology

Ash-flow t u f f ; compound cooling u n i t ; nonwelded v i t r i cbase: moderately to densely welded, d e v i t r i f i e d in ter iorwith some vapor-phase c r ys ta l l i za t i on .

ftsh-i \ •-„ cuff; nonv,_ideti v i t r i c top and base; pa r t i a l l ywelcW.' d e v i t r i f i e d in te r io r with some vapor-phasec rys ta l l i za t i on ; present under northern ha l f of YuccaMountain.

Ash-flow tu f f ; nonwelded and v i t r i c throughout; presentunder northern ha l f of Yucca Mountain.

Ash-flow t u f f : compositionally zoned, compound coolingun i t ; nonwelded zones at top and base and moderately todensely welded, d e v i t r i f i e d in te r io r wi th zones ofvapor-phase c r y s t a l l i z a t i o n ; vitrophyres at top and base ofuni t . Zeolites occur both on top o f basal v i t rophyre andin nonwelded base of u n i t .

Ash-flow tu f f ; nonwelded to p a r t i a l l y welded; thoroughlyzeol i t ized at north end of exploration block; becomesv i t r i c southward.

Ash-flow t u f f : nonwelded zones at top and base; moderatelywelded, d e v i t r i f i e d in te r io r with minor vapor-phasec rys ta l l i za t i on ; nonwelded base is z e o l i t i c ; nonwelded topzeo l i t i c in northern part of Yucca Mountain, but v i t r i c tothe south.

Ash-flow t u f f ; compound cooling un i t : nonwelded top andbase, nonwelded to densely welded i n t e r i o r with thicknessand occurrence of welding zones highly var iab le ; zeo l i t i cin nonwelded zones.

Ash-flow t u f f ; compound cooling un i t ; zones of par t ia l todense weldinq vary from d r i l l hole to d r i l l hole; zenlit icin its nonwelded to part ial ly welded parts: otherwisedevi t r i f ied.

Flow breccia, lava, and tuffs; occurrence restricted to USWG-l; zeolites irregularly distributed throughout the unit.

Ash-flow tuff; nonwelded to moderately wel ded; devitr i f ied,contains few zeolite horizons.

Ash-flow tuf fs , lavas, reworked volcanic sediments:dacitic to rhyol i t ic compositions: contains few zeolitehorizons. Includes units a, b, and c of USW G-l.

<>Spengler et al . 1979, 1981; Maldonado and Koether, 1983; Scott and Castellanos, 1984."Volumetrically minor bedded tuffs (Tb) between major strati graphic units not shown.

Zone I , the shallowest zone, is characterized by tuffs that contain

substantial unaltered volcanic glass. Smectite, opal, heulandite, and calcic

c l inopt i lo l i te are minor alteration phases and concentrate in fractures and in

thin discontinuous zones parallel to bedding. Two notable occurrences of

zeolites in Zone I include (1) thin but widespread accumulations of smectites,

calcic c l inopt i lo l i tes, and hei^andite at the top of the basal vitrophyre of

the ToDOoah Soring Member and (2) a 130-m-thick sequence of smectite- and

calcic c l inopt i lo l i te- r ich tuffs in the Yucca Mountain, Pah Canyon, and upper

ToDopah Spring Members in dr i l l hole USW G-2. Despite their different

stratigraphic and l i thologic settings, both zeolite occurrences are similar in

mineralogy and chemistry.

Zone I I is characterized by complete replacement of volcanic glass by

cl inopt i lo l i te ± mordenite, with minor opal, quartz, potassium feldspar, and

smectite. Clincptilol i te is the most abundant zeolite in this zone and

commonly makes up 50-75% of tuf fs. These zeolite-rich tuffs occur at

well-defined intervals including (1) the interval extending from the base of

the Topopah Spring Member, through the tu f f of Calico Hi l ls , and into the top

of the Prow Pass Member; (2) the interval at the base of the Prow Pass Member

and top of the Bullfrog Member; and (3) the interval at the base of the

Bullfrog Member and top of the Tram Member. These intervals are equivalent to

Zeolitic Intervals I I , I I I , and IV, respectively, of Vaniman et a l . (1984,

Table I I I ) and are shown diagrammatical ly in Fig. 3. There are no signi

mineral ogic or chemical changes in authi genie minerals across strjjj&fgraphic

contacts within these in terva ls , suggesting that 1ithology-'rather than

stratigraphy controls sites of zeol i t ic alteration. Individual zeolitized

beds range in thickness from 10 to 150 m. These beds are major sorptive

barr iers for radionuclide migration because they occur along potent ial

groundwater pathways below the repository in the unsaturated and saturated

zones.

Diagenetic Zones I I I and IV are confined to the deeper structural levels

of Yucca Mountain. Zone I I I is characterized by the progressive replacement

of c l inopt i lo l i te and mordenite by analcime, potassium feldspar, quartz, and

minor calcite and smectite. Zone IV, the deepest diagenetic zone penetrated

by d r i l l holes, is characterized by the replacement of analcime by authigenic

albite.

I I I . METHODS

A. Whole-Rock Compositions by X-Ray Fluorescence, Atomic Absorption,andEmmission Spectrophotometry

Nhole-rock major-element analyses (Appendix A) were determined by x-ray

fluorescence (XRF) for samples from d r i l l holes UE-25a#l, UE-25b#l(H),

UE-25p#l, USW G-2, USW G-3, USW GU-3, USW G-4, and J-13 (F ig . 1). Most

samples are from continuously cored exploratory d r i l l holes; samples from

UE-25p#l are from b i t cutt ings that were collected at 3-m (10-f t ) in tervals.

Two additional samples were collected from outcrop at Prow Pass, located at

the northern end of Yucca Mountain (Fig. 1) . Many of these samples were also

analyzed for mineral contents by x-ray d i f f ract ion (Bish and Vaniman 1985).

Samples were prepared by powdering and homogenizing 15-20 g of material

in a shatterbox. Duplicate 10-g sample sp l i t s were dried to 1000°C, for 4

hours, and then 1-g sp l i ts were fused with 9 g of l i thium tetraborate f lux .

Drying at 1000°C destroys the zeo l i t i c crystal structures and eliminates gross

weighing errors introduced by rapid rehydration of zeolites upon cooling,

rolatile contents (primarily water) were determined by differences in sample

weights at room temperature and after heating at 1000°C.

Major elements were determined wi th an automated Rigaku wavelength

dispersive XRF spectrophotometer. A l ibrary of x-ray in tens i t ies for rock

standards was used to calculate elemental concentrations (Valentine 1983). A

fundamental parameters program made matrix corrections Tor x-ray absorption

and secondary fluorescence.

Splits of 20 zeol i t ic t u f f samples were also analyzed by John Husler of

the University of New Mexico and Norman Suhr of Pennsylvania State University

to determine the r e l i a b i l i t y of the XRF results and speci f ical ly to evaluate a

problem of sodium loss introduced by the XRF sample preparation technique.

Husler and Suhr determined s i l i ca gravimetrically and iron t i t r i m e t r i c a l l y .

Husler analyzed a l l other elements, including tota l i ron, by atomic absorption

(AA), and Suhr determined .-*11 other elements by plasma-source emission spectro-

photometry (ES).

Comparison of XRF analyses with those determined by AA and ES (Appendix

B) shows that the three analyt ical methods agree well except for sodium (Fig.

4) . Elemental concentrations determined by the three laboratories at Los

Alamos, Pennsylvania State University, and the University of New Mexico

generally ag-ee within 5% for major components and 20% for minor components.

SILICA DETERMINEDQRAVIMETRICALLY

BY COMPARISON METHODS ^ .. DEVIATION/ \ FROM COMPARISON

' ^ METHODS

N « 20' CORRELATION COEFFICIENT . 0.9735

LINEAR REGRESSION SLOPE - 0.9387LINEAR REGRESSION Y INTERCEPT • 4.1253

66 68 70 72

WT. % SiO2

COMPARISON METHOD

uw 0.4

N = 20CORRELATION COEFFICIENT = 0.9922LINEAR REGRESSION SLOPE = 0.9724LINEAR REGRESSION Y INTERCEPT - 0.0010

WT. % TiO2

COMPARISON METHOD

±6%DEVIAT'ON

FROM COMPARISONMETHODS

\

3.00-

. , . N - 20' / /° CORRELATION COEFFICIENT - 0.9350

LINEAR REGRESSION SLOPE - 1.0026LINEAR REGRESSION Y INTERCEPT - -0.4560

WT. % AljO3

COMPARISON METHOD

OzLil

>- >J 1.50-

/±10%

DEVIATION•t FROM COMPARISON

METHODS/

/

/

/ / /

/ / /

N - 19; EXCLUDES PT. AT• / / X.2.86. Y .2 .85

S/.' CORRELATION COEFFICIENT « 0.9611LINEAR REGRESSION SLOPE - 0.8519LINEAR REGRESSION Y INTERCEPT - 0.2640

/ .

1.00 1.50 2.00 2.50

TOTAL IRON AS

WT. % FB2O3

COMPARISON METHOD

Fig. 4.Comparison o f whole-rock analyses determined by x-ray f luorescence vs.analyses by atomic absorption and emission SDectrophotometry. Solid diagonallines have a slope of one, indicating perfect correlations between analyticalmethods. Dashed diagonal l i nes represent percent dev ia t ion of x-rayfluorescence analysis from atomic absorption and emission spectrophotometryanalyses.

10

g 0.7-ZUJ

8 °6-5UJ

* u_

^ 0 . 4

X 0.3-

0.2

0.1

J " ±10%/ DEVIATIONFROM COMPARISON

METHODS

N - 19; EXCLUDES PT.AT X . I . 3 2 . Y-1.30

CCRRELAT1ON COEFFICIENT . 0.9656LINEAR REGRESSION SLOPE - 1.0083LINEAR REGRESSION Y INTERCEPT . 0.0312

0.1 0.2 0.3 0.4 O.5 0.6 0.7 1.3

WT. % MgOCOMPARISON METHOD

5

/ FROM COMPARISONMETHODS

N - 20CORRELATION COEFFICIENT - 0.9975LINEAR REGRESSION SLOPE - 0.9644LINEAR REGRESSION Y INlEHCEPT . 0.0676

WT. % CaOCOMPARISON METHOD

DEVIATION/ F R O M COMPARISON

METHODS

N . 20CORRELATION COEFFICIENT - 0.9896LINEAR REGRESSION SLOPE < 0.8280LINEAR REGRESSION Y INTERCEPT • -0.0355

3.0

WT. % NajOCOMPARISON METHOD

UJoz

I

, ±5%/ DEVIATION

/ FROM COMPARISON* METHODS

N . 20CORRELATION COEFFICIENT » 0.9380UNEAR REGRESSION SLOPE - 0.9698LINEAR REGRESSION Y INTERCEPT . -0.0260

2.5 3.0 3.5 4.0

WT. % KjOCOMPARISON METHOD

COMPARISON METHODS:

| o ATOMIC ABSORPTION SPECTROPHOTOMETRY (UNM)

• DC. PLASMA EMISSION SPECTROPHOTOMETRY (PENN STATE)

11

However, XRF analyses of sodium are systematically 22% lower than sodium

concentrations determined by AA or ES. Because sodium concentrations can be

accurately dupl icated in we l l -charac ter ized standards, we bel ieve the

systematically lower sodium concentrations in samples analyzed by XRF result

from partial loss of sodium along with water when the samples are dried at

1000°C. As a result of these interlaboratory comparisons, sodium concen-

trations were redetermined in new samples by AA and/or ES for a l l samples in

Appendix A. Potassium also appears to be systematically lower (2-5%) in XRF

analyses compared to AA or ES; however, this difference is re la t ive ly minor

and the XRF analyses for K̂O are retained in Appendix A. Aluminum concen-

trations determined by XRF agree well witn those by ES. However, there is a

4-6% systematic deviation in AA aluminum concentrations compared to XRF and ES

(Fig. 4); these differences are probably due to a cal ibrat ion bias in the AA

analyses.

B. Whole-Rock Compositions by Automated Neutron Activation Analysis

Whole-rock analyses for 32 major and trace elements were determined by

automated neutron activation analyses (ANAA), according to the procedures of

Minor et a l . (1982). ANAA analyses were performed for 86 samples from d r i l l

hole USW G-l, 3 samples from USW G-2, 2 samples from USW GU-3, and 3 samples

from tu f f of Calico Hi l ls outcrops at Prow Pass in the northern part of Yucca

Mountain (Appendix C). Most samples were l i gh t l y ground in a steel mortar;

those few samples without cobalt values v/ere powdered in a shatterbox, which

introduces substantial (unreported) cobalt and tungsten contamination into the

sample.

Approximately 4 g of a i r -dr ied material were analyzed for each sample.

Analyses were performed under the same conditions as those described by Garcia

et a l . (1982) for NBS standards. Therefore, analytical uncertainties for

values of each element in Appendix C should be similar to the standard

deviation for th is element in the NBS standards (Appendix D), where elemental

concentrations of the unknown and NBS standard match closely. Analytical

uncertainties provided for certain elements and for select samples in Appendix

C are the resul t of either an additional count 6 months after i r rad iat ion or

of longer i r rad ia t ion and count times. Those uncertainties were calculated

from count rates obtained from raw spectra, which were not available for most

samples.

C. Mineral and Glass Compositions Determined by Electron Microprobe

Volcanic glass, c l i n o p t i l o l i t e , analcime, and authigenic feldspar compo-

sit ions (Appendices F-H, respectively) were determined with an automated

Cameca electron microprobe operated at 15 keV and 15- to 20-nA beam currents.

Calibration standards included feldspars for S i , Al , Na, K, Ca, and Ba, and

amphibole and pyroxene for Mg, Fe, and T i . Wavelength dispersive x-ray counts

for each element were collected for 15 to 20 seconds or less i f 10 000 counts

were acquired. Compositions are corrected for d i f fe rent ia l matrix effects

using the methods of Bence and Albee (1968). Sodium was counted f i r s t during

analysis because i t tends to migrate from the region excited by the electron

beam. Use of a square rastered electron beam with an edge of 15 to 25 wn

minimized sodium m ig ra t i on , water loss , and s t ruc tu ra l decomposition of

zeol i tes. When possible, the sample was moved beneath the electron beam to

minimize sodium loss during analysis.

DesDite the precautions taken, sodium loss remained a s igni f icant problem

during the analysis of c l i n o p t i l o l i t e . Figure 5 shows a progressive decline

in sodium counts during a 50-second count. Calculated errors for a typical

15- to 20-second analysis range from 5 to 12% of the sodium present. Efforts

to reduce sodium loss by lowering beam currents were unsatisfactory because

poorer counting s ta t is t ics for a l l elements outweighs the small improvement in

retention of sodium. The structural formula of a l l zeol i tes, including

c l i n o p t i l o l i t e , requires (Al+Fe) = (Na+K+2Ca+2Mg) for e lec t r ica l neut ra l i ty ,

assuming the small amount of Fe occurs as F e ( I I I ) . Zeoli te analyses were

considered acceptable i f the rat io (Al+Fe)/(Na+K+2Ca+2Mg) was less than 1.15.

Ratios less than 1.0 are uncommon because of problems with sodium loss.

Analcime does not lose sodium when analyzed under the conditions used in th is

study (Fig. 5 ) .

Mordenite has been ident i f ied in many altered tuffs at Yucca Mountain by

x-ray d i f f rac t ion (Bish and Vaniman 1985), but i t s chemistry has not been

studied. Individual mordenite crystals are so fine grained and intergrown

with other authigenic phases that analysis by electron microorobe is not

feasible. Determination of mordenite compositions by whole-rock methods are

not feasible because monomineral ic beds of mordenite do not occur at Yucca

Mountain.

Glass and mineral compositions in Appendices E through F include new

unpublished data as well as analyses compiled from previously published d r i l l

13

2000

1500

YUCCA MOUNTAIN ANALCIME (CTS. / 5 sees.)11.57 WT.% Na20BEAM CURRENT = 17.6 nanoamps

Zoo

QOCO

1100

500-

300-

100

50-

30-

ICELAND HEULANDITE (CTS. / 2 sees.)1.71 WT.% Na20BEAM CURRENT = 17.8 nanoamps

• B

10

AGOURA CLINOPTILOUTE (CTS. / 2 sees.)0.58 WT.% Na20BEAM CURRENT = 17.5 nanoamps

10 20 30 40 50

TIME (sees.)

Fig. 5.Semi logarithmic plot showing sodium count rates as a function of time for avariety of zeol i tes. Analyses were performed using a stationary electronmicroprobe beam with an accelerating potential of 15 keV. The beam wasrastered with a 20-un edge.

hole reports (Sykes et a l . 1979; Heiken and Bevier 1979; Caporuscio et a l .

1982; Broxton et a l . 1982; Vaniman et a l . 1984; Levy 1984; and CaDoruscio et

al . 1985). Oata from these previous reports were not included i f

(Al+Fe)/(Na+K+2Ca+2Mg) was greater than 1.15 for zeolites or i f other problems

with mineral stoichiometry were suspected. In some cases secondary minerals

w e r e re-analyzed because ear l ie r data sets included analyses of mixed mineral

phases along with analyses of single minerals.

IV. RESULTS

AH analyses in the appendices are grouped by d r i l l hole, with individual

analyses for each d r i l l hole arranged by increasing depth. Table I I compares

representative zeol i t ic and unaltered t u f f compositions for each of the

principal stratigraphic units of Fig. 3. Table I I also provides a comparison

of zeo l i t i c t u f f compositions on the eastern side of Yucca Mountain (calcic

suite) with those occurring on the west (a lka l ic sui te) . Table I I I compares

representative c l inopt i lo l i t e compositions from the eastern and western side

of Yucca Mountain.

Whole-Rock Compositions: Whole-rock compositions for volcanic rocks of

Yucca Mountain are presented in Appendices A through C. Additional whole-rock

compositions for tuf fs in d r i l l hole USW G-l are published in Ziel inski (1983;

Table 2) and Spengler et a l . (1981; Table 5 ) . Scott and Castellanos (1984;

Table 5) present whole-rock compositions for selected samples from USW G-l ,

USW G-2, USW GU-3/G-3, and for outcrop samples.

Relative chemical changes associated with diagenesis are evaluated by

comparing unaltered and altered tu f f compositions on a constant-aluminum

basis. This method assumes that aluminum is re lat ive ly insoluble and does not

migrate s ign i f icant ly during diagenesis (Hay 1963). The low aluminum contents

for groundwaters in volcanic rocks of the ar id southwest suggest t h i s

assumption is val id (Lipman 1965). Figure 6 shows the logarithmic rat io of

major elements in zeo l i t ic tu f f s to those in unaltered t u f f s , normalized to

the same aluminum content, for a representative suite of samples (Table I I ) .

Devi t r i f ied and v i t r i c tu f fs were used to represent unaltered tu f f composi-

t ions.

Alkalies and alkaline earths were the elements most strongly affected in

zeol i t ic tu f fs by d-!agenetic al terat ion (Fig. 6 ) . Sodium, potassium, calcium,

and magnesium contents of zeo l i t i c tu f f deviate from those of unaltered t u f f

TABLE II

REPRESENTATIVE BULK ROCK COMPOSITIONS FOR TUFFS AT YUCCA MOUNTAIN, NEVADAa

0 lagenptic7onp

No."

SiO?

TiO.

A l ? 0 3

FeO

MnO

HqO

TaO

Na?O

K?O

101"

To ta l

SITiAl

Fe+?MnMgCaNaKP

Pah Tan yon Mpmbnr.Paintbrush Tuff

IA

Oonsplywelded

IB

P a r t i a l l ywelded, r lav-

d e v i t r i f i e d and / n o l i t i c -tuff

67FB-3E

77.9

0.78

13.9

1.4

0.04

0.06

0.33

0.9?

3.R

5.1

0.0?

0.97

99.7

68.40.70

15.40.980.030.040.460.936.936.680.0?

rich tuff

1

G7-675

64.3

0.31

16.8

!.fl3C

0.17

1.77

?.6O

1.18

7.7?

0.05

8.0

100.0

o!?570.3

1.41C

0.127.717.86?.743.560.04

Topopah Sp~ lnqPaintbrush

?A

llnal tprpdlowprv ttrophyre

75A1-1780

74.0

0.10

l?.4

1.07c

0.08

0.31

O.fifi

3.40

4.00

0.01

3.79

99.8

77.70.07

14.3

0.78°0.050.450.696.434.980.01

Membpr,Turf

?B

Altfi-pd'owprv itrophyre

1

G4-1314

7D.7

0.14

16.7

1 .44°

0.09

0.90

3.51

1.90

0.7f

0.0?

5.91

101.5

Element

69.60.1C

19.S

1.07c

0.061.333.733.650.910.0?

3A

Nonwpldedv i t r i ctuff

GU3- I49F.

74.5

.1.10

11.7

1.10C

O.OB

0.1?

0.77

3.70

4.34

0.01

3.58

99 .b

Percent

73.00.07

13.5

O.B1C

0.050.170.816.085.430.01

Tuff of Calico H

3B

Nonweldpdz e o l i t i c l u f f .alkal ic sui tp

G4-1544C

69.1

O.Ofi

II .5

o.ni

n.M

0.(11

0.03

0.75

7.R?

4.10

0.00

10.6

99.8

77.80.04

14.30.640.030.0?0.050.84S.76'• 510.00

i l l s

3f

Nonweldpd/ p o l i t i c t u f f .ra lc ic suite

I I

?SAI-13?3

f.O.I

0.11

11.4

1.I3C

0.05

0.94

3.77

1.73

7.64

0.01

8.90

100.7

71.60.09

16.3

0.88C

0.041.453.582.473.490.01

Analyses by c o r * i n a t i o n of K-ray fluorescence and atomic absorpt ion and plasma emission spectroi ihotometry.b Analys ls of sample 67F8-3E from Ouir\l ivan and Byers (19771 and GW557 from Z1el insk i (1933).c Tota l Fe as ^6 jO , .dLoss on i g n i t i o n , decrease in sample weiqht a t heat ing at 1000°C f o r 4 h. LOT fo r G2-675 not measured but

determined by d i f fe rence In ana l y t i ca l t o t a l f rop 100X.

TABLE I I (cont)

DiagenetiZone

SampleUo.b

SiO2

TiO 2

Al ?0 3

FeO

MnO

HgO

CaO

Na?0

K?O

P2°5LOT

Total

4A

Nonweldedv i tr i ctuff

c

GU3-1598

73.1

0.11

12.2

1.41C

0.10

0.20

0.83

3.29

4.37

0.0?

3.41

99.0

Prow Pass MemberCrater Flat Tuff

4B

Nonweldedzeo l i t i c t u f f ,alkal ic suite

11

GU3-1986B

67.9

0.10

12.4

1.20

0.03

0.07

0.11

0.87

3.44

3.72

0.02

10.2

100.1

4C

Nonweldedzeo l i t i c t u f f ,calcic suite

I I

G4-2131C

65.7

0.1?

13.2

1.12

0.12

0.02

0.15

2.63

2.46

3.52

0.00

11.1

100.1

5A

Par t ia l l yweldeddeni t r i f iedtuff

,113-2133

75.3

0.11

12.6

0.09

0.23

0.75

4.02

4.38

0.03

0.30

99.3

Bui l f rog Member,Crater Flat Tuff

5B

Noriwel dedzeo l i t i c t u f f ,alka1 ic suite

II

Gl-2557

69.0

0.11

12.4

1.51C

0.05

0.22

1.33

3,60

3.05

0.00

7.88

99.1

Tram Member,Crater F l i t Tuff

Nonweldedzeolitic tuff ,calcic suite

25B1H-2879C

66.9

0

13

1

0

01

31

3

0

7

.?6

.?

.48

.?4

.04

.32

.?4

.18

.90

.00

.86

6A

Par t i a l l ywe1deddevitri fiedtuff

6B

Nonweldedzeolitic tuff .alkai ic suite

6C

Nonweldedzeolitic tuf f ,calcic suite

.113-2952

74.8

0.16

12.2

>.41C

0.05

0.21

0.89

3.70

4.46

0.02

0.94

G3-3589C

66.5

0.49

13.8

2.59

0.26

0.06

0.57

1.82

2.96

3.65

0.00

7.23

G4-2792B

67.9

0.15

1?.3

1.04

0.13

0.03

O. I t

2.93

2.68

1.68

0.03

10.9

99.7 100.0 100.1

Element Percent

SiTiAlFe+3

MnMgCaNaKP

71.70.08

14.1

l.O4c

0.070.290.876.265.470.02

70.70.08

15.20.940.030.050.170.976.944.940.02

69.40.09

16.40.891.110.010.242.985.044.750.00

71.10.08

14.0

i, jt

0.060.320.767.365.270.0?

70.80.08

15.01 17C1 . 1 /

U.030.341.467.163.990.00

69.20.20

16.11.150.210.032.033.592.375.150.00

71.50.11

13.81 f \ lC1 .W 1

0.030.300.916.865.440.02

67.40.37

16.51.980.220.040.861.98£.864.720.00

72.00.12

15.40.830.110.020.283.335.512.270.03

coTABLE III

REPRESENTATIVE ELECTRON MICROPROBE ANALYSES OF CLINOPTILOLITE, YUCCA MOUNTAIN, NEVADA

Rock Unit

Samplp No.a

5IO?

T!O?

Ai ? n 3

Fe?03 h

MqO

TaO

BaO

Na?0

K?O

nnqpnptic ?one I

TopnpahPah Can yon Spr in qMpntipr Martipr

n?-5R4

65.5

n.ixi

1 1 . R

n.oo

1 .17

4.?1

o.n?

O.1R

1 .01

H5- 166n

65.5

n.n?

1.1.1n.oo

0.86

S. 19

0.00

0.17

o.? i

CALCK

Tuff ofra l i coH i l l ' ,

?5pl-l?50

68.6

o.nn

i,'.an.no

0.07

3.59

n.no

1.13

.1.01

SUITE, EASTERN YU(TA

Prow PassMerrier

?5pl-17OO

67.1

O.OO

l?.9

0.00

0.1?

1.17

0.05

1.55

1.73

Bull frnqMeirtPr

?5al-?B79

56.1

0.00

16.0

0.05

0.7?

6.77

0.71

0.P.9

1.43

Di aqpnpt ir

MOUNTAIN

Tuff ofL l th icRidi|"

?5p 1-33.10

60.6

0.00

16 .0

o.no

n.08

7.??

0.19

0.R5

0.11

7<inps 11 and I I I

ALKAl. IC SUITE,

Tuff ofCal irnMil Is

Gl-1774

611.1

0.00

1?.?

n.on

0.09

I.II

0.03

7.84

4.?o

Prow PassMet*er

G 3-1874

6R.?

0.00

11.1

O.OO

n.no

1 .95

n.no

1 .69

5.70

WESPfRN YUCCA MOUNTAIN

flullfrnqMprtier

f.1-?615

61.9

0.00

H . 7

0.00

0.00

1.57

o.on

?.RR

?.7I

TrenHpmbPr

G.I-1589

65 .1

0.00

11.4

0.51

n.i?

0.71

0.19

?.?3

5.55

lu f f of1. I th icRidqc

C..l-44?3

65.3

0.00

17.6

O.I?

0.7?

7.35

0.77

l . ? l

1.15

Total

K

Na

Ca'Mq

R S . l

1.07

4.03

16

4

80

RR.R a; .5 R?. .6

Unit -Cel l Composition Based on 7? (0)

4. IB

1.05

4.68

3fl

40

4.41 7.8?. 3.20

Molt Exchangeable Cations

1.06

4.75 4.85

1 .11

4.6?

Sample H5-1866 from Levy (1984a) and samples G3-J615. G3-3589, and G3-44?3 from Vantran et a l . (1984).

85.7

Si

Tl

Al

r e 1 3

Mg

Ca

Ba

Na

K

?R

0

7

0

0

7

0

0

0

.9

.00

.17

.00

.97

.00

.00

.15

.61

79.2

0.01

6.98

0.00

0.57

7.48

0.00

0.15

0.12

79.7

0.00

f. ..IT

0.00

0.04

1.67

0.00

0.95

1 .66

?9.4

0.00

6.67

O.OO

O.?l

7.05

0.01

1.3?

0.69

76.7

0.00

9.44

o.n?

0.16

3.44

0.04

0.8?

0.87

27.5

0.00

8.59

0.00

0.05

3.51

0.03

0.75

0.7.4

(AI«fe)/(?Mq*2Ca*2Ba*Na*K)

?9.R

n.oo

6.7(1

n.oo

0.06

0.5?

n.oi7.41

?.35

79.8

n.oo

6.14

0.00

0.00

0.91

0.00

1.43

?.9O

79.7

0.00

6.41

0.00

0.00

0.78

0.00

7.60

1.61

79.7

n.oo

6.1?

0.17

0.08

0.19

0.03

1.97

3.?3

79 ,i

0.00

6

0

0

1

0

7

0

.70

.04

.15

.13

.D5

.80

.66

4.36

16

31

53

16

1569

5

17

78

44

45

11

54

71

19

3?

5?

16

57

35

B

14

59

7.7

10

5-

0.5-

0.2-

Si Ti Fe Mg

ZEOLITIC TUFFS IN DIAGENETIC ZONE I

ZEOLITIC TUFFS IN DIAGENETIC ZONE II,ALKALIC SUITE IN WESTERN YUCCA MOUNTAIN

ZEOLITIC TUFFS IN DIAGENETIC ZONE II,CALCIC SUITE IN EASTERN YUCCA MOUNTAIN

a.I I

PLOT IS RATIO OF CATION PERCENT IN ZEOLITIC TUFF DIVIDED BY CATION PERCENT INUNALTERED TUFF. ALL COMPOSITIONS NORMALIZED TO THE ALUMINUM CONCENTRATION OF THEUNALTERED TUFF. COMPOSITIONS PLOTTED ARE FROM TABLE E .

Fig. 6.Logarithmic plot showing elemental ratios, normalized to equal aluminum contents, for zeolitic and unalteredtuffs, Yucca Mountain, Nevada.

by as much as a factor of 10. Sodium and potassium are generally strongly

depleted in the z e o l i t i c t u f f s , whereas calcium is s t rong ly enr iched.

Magnesium is strongly enriched in diagenetic Zone I but is highly variable in

Zone I I . These elemental enrichments and depletions in alkal ies and alkaline

earths vary in detail and depend on the location of the t u f f within Yucca

Mountain. Si l icon is systematically depleted in zeol i t ic t u f f s , whereas iron

and titanium show less systematic compositional changes. Iron in the zeol i t ic

tu f fs is strongly oxidized, with 90-100% of the iron in the ( I I I ) oxidation

state in most zeo l i t i c samDles (ADpendix B).

Triangular plots of whole-rock alkalies and alkaline earths (Fig. 7) show

that the z e o l i t i c t u f f compositions change systemat ica l ly across Yucca

Mountain. These whole-rock chemical variations are mirrored in c l inopt i lo -

l i t es that occur in these t u f f s .

Based upon mode of occurrence and compositional character ist ics, zeol i t ic

tu f fs at Yucca Mountain can be divided into three compositional groups:

(1) calcium- and magnesium-rich tuf fs associated with re la t ive ly thin

zones of alterat ion in diagenetic Zone I ;

(2) zeo l i t i c tuf fs of extremely variable composition in thick zones of

a l t e r a t i o n in diagenet ic Zones I I , I I I , and IV beneath the

exploration block; and

(3) highly potassic zeo l i t i c tuf fs in Zone I I at the northern end of

Yucca Mountain.

Three whole-rock samples from the calcium- and magnesium-rich tuf fs in

Zone I were analyzed by a combination of XRF and ANAA techniques. Two of

these samples (sample #26, Appendix A; depth 1286 f t in USW G-l , Appendix C)

were collected from altered zone at the top of the basal vitrophyre of the

Topopah Spring Member. The other sample (sample #1 , Appendix A) was collected

from a smectite- and zeo l i te - r ich tu f f in the Pah Canyon Member in USW G-2.

All three samples are characterized by >2.84 wt% CaO and >0.94 wt% MgO when

normalized to vo la t i le - f ree compositions. Unaltered Topopah Spring and Pah

Canyon tuf fs tyDical ly contain less than 0.65 wt% CaO and 0.30 wt% MgO (Table

I I ) . Trace-element abundances in the altered tuf fs are l i t t l e affected by

diagenetic a l terat ion except for strontium, rubidium, and uranium. Strontium

is concentrated in the zeo l i t i c tuf fs by a factor of 5 or more compared with

that in unaltered tu f f compositions. Rubidium and uranium are both depleted

by a factor of 2 in the zeo l i t i c tuf fs (Table IV) .

£3"

roi

-soo

a>3^,fDV)

~io3Q .

a>fD

mf+.^,

oIVJO

— 1-̂

( -"•

3t QC—Jai-J

a.a>

3

in

O*

3to

fD

%

K - RICH ZEOLITIC TUFFS IN THE PROW PASSAREA, NORTHERN YUCCA MOUNTAIN

ZEOLITIC TUFFS OF VARIABLE COMPOSITIONIN DIAGENETIC ZONE II

CALCIUM AND MAGNESIUM - RICH ZEOLITICTUFFS IN DIAGENETIC ZONE I

fD

ai —•3 ->•Q.

ifDai-sr+

no

fD3r*in

O

TABLE IV

COMPARISON OF SELECTED TRACE ELEMENTS BETWEEN UNALTERED AND ALTERED TUFFSIN DIAGENETIC ZONE I , YUCCA MOUNTAIN, NEVADA

Sample No.

Sr

Rb

U

Pah Canyon Member,Paintbrush Tuf f

Partiallywel dedvitric tuff

G2-547

290

141

3.2

Part ial lywelded clay-end zeolite-rich tuff

G2-675

1600

87

1.54

Topopah Spring MemberPaintbrush Tuff

Unalteredbasalvitrophyre

Gl-1319

22b

1.54

4.70

Clay- and zeol H e -Men altered basalvitrophyre

G1-1286

1650

52

1.37

a Al l concentrations in parts per mi l l ion (ppm); data taken from Appendix C.DSr value from Noble and Hedge (1969, Table I ) ; the ANAA value for Sr in th is sample

is 760 ppm.

The altered tu f fs in diagenetic Zones I I , I I I , and IV are chemically more

diverse than those of Zone I . Alkalies and alkaline earths in these tu f fs

vary systematically across Yucca Mountain. Tuffs on the eastern side of Yucca

Mountain are characterized by calcium-rich compositions, whereas altered tu f fs

on the western side of Yucca Mountain are more a lka l i r ich (Fig. 7 ) . A

transi t ional zone, characterized by samples from d r i l l holes USW G-2 and G-4,

separates the two compositional sui tes. The calcium-rich tu f fs on the eastern

side of Yucca Mountain deviate most from original t u f f compositions, being

st rong ly enriched in calcium and magnesium and depleted in sodium and

potassium. A lka l i - r i ch tu f fs from the western part of Yucca Mountain overlap

o r i g i n a l compositions to some ex ten t , but many samples have higher

sodium/potassium and calcium/sodium+potassiurn ratios than the unaltered t u f f s .

Although fewer compositions were determined for analcime-bearing tu f fs in Zone

I I I and authigenic albite-bearing tu f fs in Zone IV, these deeper zones of

al terat ion show compositional variat ions similar to those found in Zone I I .

On the eastern side of Yucca Mountain, excess calcium in Zones I I I and IV is

not incorDorated into the primary authigenic minerals such as analcime and

authigenic feldspar but instead results in a greater abundance of ca lc i te .

22

Potassium-nch tuf fs crop out at Prow Pass, located at the northern end

of Yucca Mountain. Two samples from tu f f of Calico Hi l ls outcrops (sample #62

and 63, Appendix A) contain 7.2 and 8.7 wt% 1^0 (on a vo la t i le - f ree basis),

respectively; by comparison, zeo l i t ic tu f fs beneath the exploration block,

including those of the t u f f of Calico H i l l s , generally contain less than 5.0

vt% K20. The potassic tu f f s occur in the structural ly highest portion of

diagenetic Zone I I , which rises and thins northward at Yucca Mountain (Broxton

et a l . 1986). This unusual potassium enrichment appears to be confined to the

extreme northern end of Yucca Mountain because tuffs from the same s t r a t i -

graphic horizon 3 km to the southeast, in d r i l l hole USW G-2, contain only 3-4

w« K20.

Glass and Mineral Compositions: Glass compositions were obtained for a l l

members of the Paintbrush Tuff, the tu f f of Calico H i l l s , and the Prow Pass

Member of the Crater Flat Tuff (Appendix E). These glasses are high-si l ica

rhyolites containing subequal potassium and sodium (Fig. 8 ) . Si/Al ratios for

these glasses are re lat ive ly high (5.2 to 5.6) compared with those of cl inop-

t i l o l ites that replaced them (2.6 to 5.4).

The compositions of glasses largely control the chemistry of pore waters

during diagenesis. Selective leaching of sodium from glasses by groundwater

during the i n i t i a l stages of hydra ci on and diagenesis has been described by

Lipman (1965), Noble (1967), and White et a l . (1980). Though hydrated, the

glasses in Zone I show no evidence for massive alkal i exchange with ground-

waters, suggesting that a l terat ion by groundwater has been l imi ted and that

most exchange is confined to the fine-grained dusty matrix where glass

particles have much larger surface areas. The s imi lar i ty of glass composi-

tions throughout the strat igraphic sequence suggests that factors other than

original glass compositions are resporsible for the chemical and mineralogic

variations in diagenetically altered tuffs at Yucca Mountain.

C l i nop t i l u l i t e compositions (Appendix F) parallel the chemical trends

described above for whole-rock compositions. C l inopt i lo l i tes in diagenetic

Zone I are invariably calcium r ich (Fig. 9) and have Si/Al rat ios between 4.0

and 5.0 (Fig. 10). Magnesium contents of these zeolites are re la t ive ly high,

ranging from 0.6 to 1.5% MgO by weight. Levy (1984) has shown that some of

these zeolites have the thermal s tab i l i ty of heulandite (Mumpton 1960), but

23

FIELD OF COMPOSITIONS FOR THEPAH CANYON MBR.(n = 3)TOPOPAH SPRING MBR.(n = 40)TUFF OF CALICO HIL'_S(n = 25)PROW PASS MBR.(n = 5)

FIELD OF COMPOSITIONS FOR THETIVA f MNYON MBR.(n = 17)YUCCA MOUNTAIN MBR.(n = 1)

n= NUMBER OF ANALYSES

Ca + Mg

Fig. 8.Triangular diagram showing re la t ive alkal i and alkaline-earth contents forglasses from diagenetic Zone I , Yucca Mountain, Nevada.

others have a thermal s tab i l i t y intermediate between heulandite and c l i nop t i -

l o l i t e (GrouD 2 of Boles 1972). Calcic c l i nop t i l o l i t es at the top of the

basal vitrophyre of the Topopah Spring Member are s l ight ly more sodic than

c l i nop t i l o l i t es within the shallow zeolite occurrence of the Pah Canyon Member

in USW G-2 (Fig. 9 ) .

C l i n o p t i l o l i t e compositions in Zone I I vary sys temat ica l ly both

ver t ica l ly and la te ra l l y at Yucca Mountain [F ig. 11). On the eastern side of

Yucca Mountain, c l inop t i lo l i t e compositions are calcic-potassic and show

strong calcium enrichment with depth (Table I I I ) . C l inop t i lo l i tes on the

western side of Yucca Mountain are sodic-potassic and tend towards sodium

• TOPOPAH SPRINGMEMBER

O PAH CANYON MEMBER

Na Ca + MgFig. 9.

Trianqular diagram showing re la t ive alkal i and alkaline-earth contents forc l i nop t i l o l i t es of diaqenetic Zone I , Yucca Mountain, Nevada.

enrichment with depth. A transit ional zone, consisting of d r i l l holes USW

G-2, USW G-4, and USW H-4, has compositions that overlap both sui tes.

Cl inopt i lo l i tes for the one sample reported for d r i l l hole USW H-3 are

unusual in that they occur on the western side of Yucca Mountain, yet contain

substantial calcium and l i t t l e sodium. These c l inoDt i lo l i tes occur in the

uppermost part of diagenetic Zone I I and may ref lect exchange of Zone I I

c l i nop t i l o i i t es with re la t ive ly calcium-rich solutions moving downward through

Zone I (Levy 1984). The compositions of c l i noo t i l o l i t es from deeper portions

of Zone I I were also analyzed by Levy (1984), but those results were not

included in Appendix F or in Fig. 11 of th is report because the rat io of

(Al+Fe)/(Na+K+2Ca+2Mg) for these minerals was greater than 1.15. However, the

25

CLINOPTILOLITES AND HEULANDITESIN DIAGENETIC ZONE I

<z<

LJJm

30-1

20H

10H

4.0

Si/AI

EASTERN GROUP OF CALCIC CLINOPTILOLITES

DIAGENETICZONE II

towCO>

WESTERL GROUP OF ALKALI CLINOPTILOLITES

\

crUJm5DZ

4 0 -

3 0 -

2 0 -

10-

i I i i3.0

IBiIl||

Jill4.0 5

Si/AI

Fig. 10.Histogram comparing Si/AI rat ios for c l inopt i 1 oi i tes of Yucca Mountain, Nevada.

26

WESTERN ALKALIC GROUP

DRILL HOLES:

• USW G- 1

O USWQU-3/G-3

» USWH-5

USW H-3

TRANSITIONAL GROUP

DRILL HOLES:

• USW G - 2

O USW G - 4D USW H-4

FIELD OFCOMPOSITIONS FORRHYOLITIC GLASSES

OF YUCCA MOUNTAIN

EASTERN CALCIC GROUP

DRILL HOLES:

UE-25a#1/b#1(H)

O UE-25p#1

" J - 13

Ca + Mg

Fig. 11.Triangular diagrams showing relative alkali and alkaline-earth contents for clinoptilolites of diageneticZones II and ill, Yucca Mountain, Nevada.

analyses by Lew clearly showed that the compositions of most c l i nop t i l o l i t es

in Zone I I of d r i l l hole USW H-3 are sodic-potassic. In nearby Gr i l l hole USW

G-3, a more complete suite of samples for diagenetic Zone I I shows that

analyses by Levy clearly showed that the compositions of most c l i nop t i l o l i t es

in Zone I I of d r i l l hole USW H-3 are sodic-potassic. In nearby d r i l l hole USW

G-3, a more complete suite of samples for diaqenetic Zone I I shows that

c l i nop t i l o l i t es in this part of Yucca Mountain are dominantly sodic-potassic

in composition.

Si/Al rat ios within c l i nop t i l o l i t es of diagenetic Zone I I (Fig. 10)

generally range between 3.8 and 5.4. However, Si/Al ratios within the eastern

group of calcic c l i nop t i l o l i t es are bimodal with a small group of samples

having Si/Al rat ios between 2.6 and 3.6 (F ig. 10). This small group of

sil ica-poor compositions is associated with the most calcic c l i nop t i l o l i t es in

the deepest parts of Zone I I .

C l inopt i lo l i tes associated with the potassic tu f fs at the northern end of

Yucca Mountain also have potassium-rich compositions. C l i nop t i l o l i t e compo-

sit ions were determined for three samples within the t u f f of Calico Hi l ls and

for one sample in the overlying Topopah Spring Member, which is also zeo l i t i c

below the basal vitrophyre. These c l i nop t i l o l i t es tend to be potassic-calcic

within the base of the Topopah Spring Member and the upper part of the tu f f of

Calico H i l l s . The c l i nop t i l o l i t e s become increasingly potassic toward the

center and base of the t u f f of Calico Hi l ls (Fig. 12). Si/Al ratios are

similar to those of other Zone I I c l i n o p t i l o l i t e s , ranging between 4.0 and

5.0. Mordenite and adularia are common authigenie phases associated with

these potassic c l i n o p t i l o l i t e s .

Analcimes in samples from Yucca Mountain range in molecular composition

from (NaAl).. o Si' 70OC nHo0 to (NaAl)1o _ Si.,,- c 0 n c nHo0. Al l analcimes

have nearly pure end-member compositions with only trace amounts of calcium

and potassium substituting for sodium (Appendix G). Si/Al rat ios for these

analcimes range from 2.3 to 2.9 (Fig. 13). The dist r ibut ion of Si/Al rat ios

appears to be bimodal, with the primary mode between 2.4 and 2.6 and a

secondary mode between 2.7 and 2.8. The significance of bimodal Si/Al ratios

in these analcimes is not known. However, these ranges of Si/Al ratios are

typical of analcimes associated with sil iceous volcanic rocks (Coombs and

Whetten 1967; Sheppard and Gude 1973).

28

SAMPLE 3 - 15 - 82 - 11, NEAR BASE* OF TOPOPAH SPRING MEMBER

n SAMPLE 5 - 6 - 81 - 1. UPPER PARTOF TUFF OF CALICO HILLS

SAMPLE 3 - 1 5 - 8 2 - 6 , CENTRAL PARTOF TUFF OF CALICO HILLS

o SAMPLE 3 - 15 - 82 - 2, NEAR BASEOF TUFF OF CALICO HILLS

Na Ca + MgF i q . 1 2 .

Triangular diagram showing re lat ive a lkal i and alkaline-earth contents forc l inopt i lo l i tes in the t u f f of Calico Hi l ls at Prow Pass, northern YuccaMountain.

Authigenic potassium feldspar and albi te compositions (Appendix H) are

also characterized by nearly pure end-member compositions. These end-member

compositions are typical for feldspars formed under diaqenetic conditions

(Kastner and Siever 1979). Most potassium feldspar compositions y ie ld

molecular formulae with 0.88 to 0.96 nontetrahedral cations per 8-oxygens

(Fig. 14) rather than the ideal one nontetrahedral cation per 8-oxyqens.

Charge balance within these potassium feldspars is maintained because the

tetrahedral framework is correspondingly aluminum poor and s i l icon r i ch .

Si/Al ratios are 3,35 to 3.45 compared with an ideal rat io of <3.00. Sub-

microscopic intergrowths of quartz and feldspars might account for the

s i l i ca - r i ch chemistry of the feldspars. However, examination of several

potassium feldspar grains by electron microscope revealed no evidence of

intergrown quartz.

29

CO

o

=5 XI

Cu QJC 3

o

CD<CU

a.cu

_j

COr to.a- jCu

(/)

3"o£

-a a.O -••r+ I/)OJ r+l/> - Jt/i —' •_.. crc c3 r+

- tv O

Q. -hI/) O• a ->CXI

-i in

c oO -» iocu n

Cu

O - • •

c o

in

NUMBER OF ANALYSES

CO

c

m

OD

O

O

I

CuQ_

•

r+-)Cu

(T)Q .- JCU

t/1

rtrt)en

too

o5 SozM o

o

en O"I

IDEAL FELDSPAR FORMULAE

o

o

- h

CO

DJ UJ

O(/I

o

CU

n

rt>

onCu

o

ro

NUMBER OF ANALYSES

$ § 8~ r T i

>

V, DISCUSSION

Vi t r i c tu f f s that were precursors to the major zeolite deposits of Yucca

Mountain were generally h igh-s i l ica rhyoli tes with similar major-element

chemistries (Table I I ) . Despite similar start ing compositions, the principal

zeo l i t e deposi ts have extremely var iab le major-element chemis t r ies .

Individual stratigraphic units such as the t u f f of Calico Hi l ls display a wide

range of compositions la te ra l l y across Yucca Mountain. Evidently diagenesis

was accompanied by widespread mobilization and redistr ibut ion of chemical

constituents within these t u f f s . This widespread redistr ibut ion of elements

within the tu f f s supports Hoover's (1968) concept of diagenesis of tuf fs at

the Nevada Test Site within a chemically open system.

Groundwater is the l i k e l y medium through which chemical t ranspor t

occurred. Cations in zeolites within the t u f f s , part icular ly alkalies and

alkaline earths, are readily exchanged with those in groundwaters. Therefore,

systematic variations in the compositions of zeo l i t i c tuf fs probably ref lect

variable groundwater compositions during diagenesis. I t is unclear, however,

whether present-day tu f f compositions represent original compositions acquired

at the time of diagenetic crys ta l l iza t ion or compositions acquired at a later

date through ion exchange with younger groundwaters. Broxton et a l . (1986)

discuss possible origins of the chemical va r iab i l i t y of t u f f s at Yucca

Mountain.

The zeol i te occurrence at the top of the basal vitrophyre of the Topopah

Spring member is the f i r s t major zeolite barr ier that radioactive waste-

bearing solutions w i l l encounter as they move downward through the unsaturated

zone. The proximity of the zeolites within th is interval to the potential

repository makes them susceptible to contraction and dehydration during the

thermal oulie expected after repository closure. This study and Levy's (1984)

work indicate that this zeol i te interval consistently bears calcium-rich

c l i nop t i l o l i t e and heulandite. Calcium-rich c l i nop t i l o l i tes can lose up to

11% of their or iginal water and contract in volume by 3% when heated to 100°C

(Bish 1984, 1985).

The sorptive behavior of Zone I zeolites also may be compositionally

dependent. Clay- and zeo l i te - r ich tuf fs in Zone I are enriched in calcium,

magnesium, and strontium and depleted in sodium, potassium, rubidium, and

uranium. This may simply re f lec t the relative abundances of these elements in

groundwaters of the unsaturated zone. However, i t is also possible that Zone

I cl inoDti lol i tes are s iqn i f icant ly more selective for bivalent cations than

for cations in other valence states. White et al . (1980) noted that ground-

waters increase in sodium and decrease in calcium and magnesium after passing

through zeol i t ic tu f fs in the unsaturated zone at Rainier Mesa, located 50 km

NNE of Yucca Mountain. They concluded that zeolites and clays selectively

removed bivalent cations from the groundwater system. Simi lar ly, zeolites on

top of the basal vitrophyre in the Topopah Spring Member may have a greater

select iv i ty for bivalent cations.

Cl inopt i lo l i te-bearing tuf fs in Zone I I are the most important sorptive

barriers to radionuclide migration at Yucca Mountain because of thei r great

thicknesses, the i r abundant zeol i tes, and thei r position along potential

qroundwater pathways to the accessible environment. The thermal properties of

Zone I I zeolites are probably re la t ive ly unimportant for assessing repository

performance because these zeolites l i e a great distance below the repository

leve l . Monwelded tuf fs at the base of the Topopah Spring Member and at the

top of the t u f f of Calico Hi l ls are 75 to 100 m below the repository center-

l ine and should not be s ign i f icant ly heated during the thermal pulse. Further-

more, these uppermost zeolites of Zone I I contain substantial potassium, which

minimizes thermal contraction and dehydration (Bish 1984, 1985).

Sorptive properties of c l i noo t i l o l i t es in Zone I I , par t icu lar ly in the

v ic in i t y of the exploration block, are important for assessing repository

performance because these zeolites occur along potential groundwater pathways

from the repository to the accessible environment. These sorptive properties

could vary with composition la te ra l l y and ver t i ca l l y across Yucca Mountain.

Both sodium and calcium in c l i n o p t i l o l i t e exchange readily with a wide range

of potential radionuclides, including cesium, rubidium, strontium, and barium

{Ames 1960; Breck 1974). Potassium, on the other hand, is more d i f f i c u l t to

remove from the c l i n o p t i l o l i t e structure, exchanging well with cesium and

rubidium but exchanging poorly with strontium and barium (Ames 1960).

In the unsaturated zone, exchangeable cations within c l i nop t i l o l i t es on

the western side of the exploration block consist primarily of sodium and

potassium (Fig. 15). C l inop t i lo l i tes in the unsaturated zone on the eastern

side of the exploratory block have mixed sodium-potassium and calcium-

ootassium compositions. In the saturated zone, cl inopt i lo l i te compositions

tend to become more sodic with depth on the western side of Yucca Mountain and

more ca icc with depth to the east. Unfortunately, i t is not possible to

o

WESTERN PARTREPOSITORY BLOCKEASTERN PART OFREPOSITORY BLOCK

Na Ca+MgF i g . 15 .

Triangular diagram showing a lka l i and alkaline-earth contents for cl inop-t i l o l i t e s in the unsaturated zone below the exploration block, Yucca Mountain,Nevada.

accurately evaluate the sorption behavior of c l i n o p t i l o l i t e as a function of

i t s chemistry from published sorption experiments (Daniels et a l . 1982; U.S.

Department of Energy 1984). These experiments were designed to determine bulk

sorption characterist ics of Yucca Mountain tu f f s and used whole-rock samples

containing variable proportions of sorptive and nonsorptive minerals. In

addit ion, the sorptive minerals had variable compositions. Further experi-

ments are planned to determine the effect of exchangeable cation compositions

on c l i n o p t i l o l i t e sorption using monomineral ic samples and end-member

compositions.

33

Potassic c l i n o p t i l o l i t e s are abundant only in outcrop at the north end of

Yucca Mountain. These ootassic c l i n o p t i l o l i t e s may have re la t i ve l y poor

sorption character is t ics because of the d i f f i c u l t y in removing potassium from

the zeol i te s t ruc ture . However, these potassic c l i n o p t i l o l i t e s do not occur

along potent ia l groundwater pathways from the repository to the accessible

environment and the i r sorptive properties are not important for assessment of

repository performance.

V I . SUMMARY AND CONCLUSIONS

Major zeo l i t e deposits at Yucca Mountain developed wi th in th ick sequences

of nonwelded tu f fs that were i n i t i a l l y v i t r i c . Alteration of these v i t r i c

tuf fs resulted in the dissolution of the glass and precipi tat ion of heulan-

d i te , c l i n o p t i l o l i t e , and mordenite. These zeol i te deposits are la tera l ly

extensive beneath much of Yucca Mountain and could provide important barriers

to radionuclide migration.

The precursor v i t r i c t u f f s were primarily high-si l ica rhyol i tes with

similar major element chemistry. However, zeol i te deposits developed in these

tuf fs have variable compositions. Significant mobilization and redist r ibut ion

of sodium, potassium, calcium, magnesium, and s i l icon during zeol i t izat ion

indicates that diagenesis took place in an open chemical system.

Yucca Mountain tuf fs can be divided into three compositional groups. (1)

In diagenetic Zone I , tuf fs in thin zones of al terat ion have calcium- and

magnesium-rich compositions. (2) In Zones I I , I I I , and IV, diagenetically

a l tered t u f f s have compositions that vary l a t e r a l l y . These t u f f s are

calcic-potassic on the east side of Yucca Mountain but become increasingly

sodic-potassic in s t r a t i g r a p h i c a l l y equivalent un i ts to the west. (3)

Potassium-rich tu f fs occur where Zone I I crops out at Prow Pass in the

northern part of Yucca Mountain. C l inopt i lo l i tes within each of these three

compositional groups follow chemical trends similar to those found in their

host tu f f s .

Experimental studies have shown that variations in zeol i te compositions

can a f fec t t h e i r thermal and exchange p rope r t i es . At Yucca Mountain,

c l i nop t i l o l i t es have exchangeable-cation compositions that span the entire

compositional range between sodium, potassium, and calcium end members.

Because of these compositional variat ions, the thermal expansion/contraction

behavior, hydration/dehydration behavior, and ion-exchange properties of these

34

zeolites and of their host tu f f s may vary at Yucca Mountain. Data presented

in this study can be used in conjunction with experimental results to model

the effects of mineral chemical variations on the physical properties of

zeolites and the i r host tu f fs in a repository environment.

ACKNOWLEDGMENTS

We thank David Mann f o r p repara t ion o f po l i shed t h i n sec t i ons used f o r

microprobe s t u d i e s . Barbara Hahn typed the manuscr ipt and Anthony Garc ia ,

Sharon Mikkelson, and Florence Fu j i t a prepared the i l l u s t r a t i o n s . We also

thank Donathon J . Kr ie r and David T. Vaniman for t h e i r c r i t i c a l reviews of the

manuscript.

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Lipman, P. W., R. L. Christiansen, and J . T. O'Conner, "A CompositionallyZoned Ash-Flow Sheet in Southern Nevada," US Geological SurveyProfessional Paper 524-F, F1-F47 (1966).

Lipman, P. W., "Chemical Comparison of Glassy and Crystall ine Volcanic Rocks,"US Geological Survey Bul let in 1201-D, 24 pp. (1965).

Maldonado, F. , and S. L. Koether, "S t ra t ia raphy , S t ruc tu re , and SomePetrographic Features of Tertiary Volcanic Rocks at the USW G-2 D r i l lHole, Yucca Mountain, Nye County, Nevada," US Geological Survey open-fi lereport 83-732, 83 pp. (1983).

Minor, M. M., W. K. Hensley, M. M. Denton, and S. R. Garcia, "An AutomatedActivation Analysis Systam," J . Radioanal. Chem. 70_, 459-471 (1982).

Mumpton, F. A., "Cl i nop t i l o l i t e Redefined," Am. Mineral. 45_, 351-369 (1960).

Noble, D. C , "Sodium, Potassium, and Ferrous Iron Contents of SomeSecondarily Hydrated Natural S i l i c ic Glasses," Am. Mineral. 52, 280-286(1967). —

Noble, D. C , and C. E. Hedge, "87Sr/8GSr Variations Within IndividualAsh-Flow Sheets," US Geological Survey Professional Paper 650-C,C133-C139 (1969).

Quinlivan, W. D., and F. M. Byers, Jr . , "Chemical Data and Variation Diagramsof Igneous Rocks from the Timber Mountain-Oasis Valley Caldera Complex,Southern Nevada," US Geological Survey open-fi le report 77-724, 9 pp.

Scott, R., and M. Castellanos, "Preliminary Report on the Geologic Characterof the D r i l l Holes USW GU-3 and USW G-3," US Geological Survey open-filereport 84-491, 121 pp. (1984).

Sheppard, R. A. , and A. J . Gude, 3rd. , "Zeolites and Associated AuthigenieSi l icate Minerals in Tuffaceous Rocks of the Big Sandy Formation, MohaveCounty, Arizona," US Geological Survey Professional Paper 830, 36 pp.(1973).

Spengler, R. W., D. C. Muller, and R. B. Livermore, "Preliminary Report on theGeology and Geophysics of D r i l l Hole UE25a-l, Yucca Mountain, Nevada,"US Geological Survey open-f i le report 79-1244, 43 pp. (1979).

Spengler, R. W., F. M. Byers, J r . , and J . B. Warner, "St ra t ig raphy andStructure of Volcanic Rocks in Dr i l l Hole USW Gl, Yucca Mountain, NyeCounty, Nevada," US Geological Survey open-f i le report 81-1349, 50 pp.(1981).

Sykes, M. L. , G. H. Heiken, and J . R. Smyth, "Mineralogy and Petrology of TuffUnits from the UE25a-l D r i l l Si te, Yucca Mountain, Nevada," Los AlamosScient i f ic Laboratory report LA-8139-MS, 76 pp. (November 1979).

US Department of Energy, "Draft Environmental Assessment, Yucca Mountain Si te,Nevada Research and Development Area, Nevada," Office of Civ i l ianRadioactive Waste Management report, DOE/RW-0012 (1984).

Valentine, G., "Procedures for Analysis of S i l ica te Rocks and Minerals at LosAlamos National Laboratory by X-Ray Fluorescence," Los Alamos NationalLaboratory report LA-9663-MS, 33 pp. (May 1983).

Vaniman, D., D. Bish, D. Broxton, F. Byers, G. Heiken, B. Carlos, E. Semarge,F. Caporuscio, and R. Gooley, "Variations in Authigenic Mineralogy andSorptive Zeolite Abundance at Yucca Mountain, Nevada, Based on Studies ofD r i l l Cores USW GU-3 and G3," Los Alamos National Laboratory reportLA-9707-MS, 71 pp. (June 1984).

White, A. F., H. C. Claassen, and L. V. Benson, "The Effect of Dissolution ofVolcanic Glass on the Water Chemistry in a Tuffaceous Aquifer, RainierMesa, Nevada," US Geological Survey Water-Supply Paper 1535-Q, Q1-Q34(1980).

Z ie l insk i , R. A., "Evaluation of Ash-Flow Tuffs as Hosts for RadioactiveWaste: Cr i ter ia Based on Selective Leaching of Manganese Oxides," USGeological Survey open-fi le report 83-480, 21 pp. (1983).

APPENDIX A

MAJOR-ELEMENT ANALYSES OF TUFFS BY X-RAY FLUORESCENCEYUCCA MOUNTAIN, NEVADAa

D r i l l Hole USW G-2Samp 1eNumber

Depth ( f t )

Si 02TiO2A1203Fe203MnOMgOCaONa20K20P205LOI

1.

675

64.30.33

16.81.830.171.772.601.382.720.058.0fi

2.

2430

76.50.14

11.91.240.130.411.981.683.950.013.49

3.

2667

75.60.11

12.71.380.080.141.592.513.040.022.44

4.

3067

73.30.16

13.11.440.040.292.253.373.340.053.61

5.

3192

76.00.12

11.91.340.080.141.112.633.890.022.89

C.

3454

75.00.14

14.31.600.040.571.492.962.120.022.73

7.

3541

73.£0.2)

14.01.960.0J\0.450.744.173.370.032.14

Total 100.0 101.4 99.5 101.0 100.2 100.9 100.9

Cation PercentSiTiAlFe+3MnMgCaNaKPCa+MgKNa

66.00.25

20.31.410.122.712.862.753.560.04

46.930.023.1

74.50.10

13.70.910.090.592.073.174.910.01

24.845.729.5

73.80.08

14.61.010.050.201.664.753.790.02

17.936.445.7

70.7G.12

14.91.040.030.422.326.304.110.04

20.831.247.9

74.00.09

13.70.980.050.201.164.964.830.02

12.243.344.5

72.00.10

16.21.160.030.821.535.512.600.02

22.524.852.7

69.70.14

15.61.390.050.630.757.644.060.02

10.631.058.4

Sample Descriptions:

1. Pah Canyon Member, Paintbrush Tuff. Cl inopti lol i te- and smectite-bearingnonwelded tuff in diagenetic Zone I .

2. Tuff of Calico Hi l ls . Clinopti lol i te- and mordenite-bearing nonwelded tuffin diagenetic Zone I I .

3. Tuff of Calico Hi l ls . Clinopti lol i te- and mordenite-bearing nonwelded tuffin diagenetic Zone I I .

4. Prow Pass Member, Crater Flat Tuff. Mordenite-bearing tuff in diageneticZone I I .

5. Prow Pass Member, Crater Flat Tuff. Cl inopti lol i te- and mordenite-bearingtuf f in diagenetic Zone I I .

6. Bullfrog Member, Crater Flat Tuff. Mordenite-bearing tuff in diagenetic ZoneIII.

7. Bullfrog Member, Crater Flat Tuff. Analcime-bearing tuff in diagenetic ZoneIII.

All sodium concentrations determined by atomic absorption or plasma sourceu emission spectrophotometry.

LOI not measured but determined by difference in analytical tota l from 100%.

39

APPENDIX A (cont)

D r i l l Hole USW G-2SampleNumber

Depth (ft)

Si 02TiO2A1203Fe203MnOMgOCaONa20K20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

8

3795

71.0.14.4.0.0.0.1.3.0.2.

99,

710163010240195327

8554350369,55.17,49.22.72

.9

.1

.41

.8

.24

.02

.02

.58

.25

.41

.18

.4

.4

.2

9.

3933

75.10.1212.41.170.070.250.952.774.310.022.27

99.4

Cati73.00.0914.10.850.050.360.995.225.340.0211.344.943.8

10.

4090

63.00.6814.15.300.171.725.252.192.700.353.82

99.3

11•

4805

74.0.14.1.0.0.0.2.4.0.1.

100.

on Percent62.70.5116.63.970.122.555.604.233.430.3051.621.726.7

70,015,10,00450104939

225177026624,5177,05.57

.2

.9

.18

.9

.27

.01

.94

.25

.65

.82

.04

.2

.9

.9

12•

5895

66.0.12.3.0.0.5.2.2.0.6,

99,

6701420,154304723

2370051493,29,26,76.08.16

.3

.6

.28

.4

.34

.10

.41

.78

.47

.59

.07

.2

.529.3

13•

5992

72.0.13.1.0.0.1.3.4.0.2.

99,

69,0151001640143549

0276961047,31,68,00,07.26

.8

.1

.19

.4

.42

.07

.67

.35

.85

.90

.06

.7

.6

.7

Sample Descriptions:

8. Tram Member, Crater Flat Tuff, Analcime- and kao l in i te -bearing nonwelded t u f f in diagenetic Zone I I I .

9. Tram Member, Crater Flat Tuff. Analcime-bearing t u f f indiagenetic Zone I I I .

10. Rhyodacite Lava. Analcime- and calcite-bearing lava indiagenetic Zone I I I .

11. Tuff of L i th ic Ridge. Authigenie a lb i te - and analcime-bearing nonwelded t u f f in diagenetic Zone IV.

12. Bedded Tuff. Calc i te- and chlorite-bearing bedded t u f f indiagenetic Zone IV.

13. Older Tuff Sequence. Calcite- and chlorite-bearing nonweldedt u f f in diagenetic Zone IV.

40

APPENDIX A (cont)

D r i l l Holes USW GU-3 and USW G-3

SampleNumber

Depth ( f t )

Si 02TiO2A1203Fe203MnOMqOCaONa2OK20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

14.

1498

74.50.10

11.71.100.080.120.773.204.340.013.58

99.5

73.00.07

13.50.810.050.180.816.085.430.017.9

43.448.7

Sample D e s c r i p t i o n s

14. Tuff of Cal ico

15.

1598

73.10.11

12.21.410.100.200.833.294.370.023.41

99.0

71.70.08

14.11.040.070.290.876.265.470.029.0

42.448.5

Hills.

16.

1986

68.30.12

11.31.350.070.230.823.443.610.02

10.32

99.6

17.

2577

66.30.12

12.91.320.100.272.342.433.610.029.83

99.3

Cation Percent71.60.09

14.01.070.050.360.927.004.830.029.8

36.953.4

69.80.10

16.11.050.070.422.644.964.850.02

23.837.738.5

Vitric nonwelded

1£5.

3207

740

1220013401

100

710

141001540

163944

.9

.24

.6

.03

.57

.44

.41

.12

.12

.07

.19

.7

.1

.17f

• 1

.45

.37

.62

.43

.74

.99

.06

.1

.0

.9

19.

3589

66.50.48

13.82.850.060.611.832.983.420.166.86

99.5

67.60.37

16.52.180.040.921.995.874.430.14

22.133.544.4

tuff in diagenetic15. Prow Pass Member. C r a t e r F l a t Tuff. V i t r i c nonweltled tuff

20i .

3854

69.0.

12.1.0.0.1.3.2,0.8.

99,

710

151011630

173051

Zonein

4164,33,03,66,15,32,98,02.05

.5

,1.12.0.03.02.01.26.59.89.02.8.5.7

I .

diagenetic Zone I .16. Prow Pass Member, Crater Flat Tuff. Clinoptilolite-bearing

nonwelded tuff in diagenetic Zone I I .17. Bullfrog Member, Crater Flat Tuff. Clinoptilolite-bearing nonwelded

tuff in diagenetic Zone I I .18. Tram Member, Crater Flat Tuff. Cl inoptilolite-bearing

partially welded tuff in diagenetic Zone I I .19. Tram Member, Crater Flat Tuff. ClinODtilolite-bearing nonwelded

tuff in diagenetic Zone I I .20. Tuff of Lithic Ridge. Clinoptilolite-bearing nonwelded tuff in

diagenetic Zone I I .

41

APPENDIX A (cont)

D r i l l Hole USW G-3

SampleNumber

Depth (ft)

Si 02TiO2A1203Fe203MnOMgOCaONa20K20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

21•

4008

69.0.14.2.0.0.1.3.4.0.1.

99,

67,01610

8344.2907,60,31,44,85,09.83

.0

.1

.25

.3

.66

.050.861650154044

.35

.41

.95

.07

.2

.8

.0

I'c_ •

4263

7301210014302

99

700141001740143154

.2

.26

.7

.75

.07

.48

.27

.00

.55

.05

.61

.9

23.

4568

67.80.4313.72.960.081.081.803.562.400.115.25

99.2

2'

4786

7201310013402

99

Cation Percent.3.19.4.27.05.69.31.45.35.04.5.5.0

67.70.3216.12.220.061.611.936.893.060.0926.222.751.1

690151001650153846

.2

.26

.6

.77

.11

.61

.25

.39

.23

.05

.41

.9

.3

.19

.4

.28

.07

.87

.29

.31

.18

.04

.8

.0

.2

25.

4869

71.00.2312.91.580.050.500.964.702.570.044.11

98.6

69.80.1714.91.170.030.731.018.953.220.0312.523.164.3

Sample Descriptions:

21. Tuff of L i th ic Ridge,diagenetic Zone I I I .

22. Tuff of L i th ic Ridge,diagenetic Zone I I I .

23. Tuff of L i th ic Ridge,diagenetic Zone I I I .

24. Older Tuff Sequence,diagenetic Zone I I I .

25. Older Tuff Sequence,diagenetic Zone I I I .

Analcime-bearing nonwelded tu f f in

Analcime-bearing nonwelded tu f f in

Analcime-bearing nonwelded tu f f in

Analcime-bearing nonwelded t u f f in

Analcime-bearing nonwelded tu f f in

42

APPENDIX A (cont)

Drill Hole USW G-4

SampleNumber

Depth ( f t )

Si 02TiO2A1203Fe203MnOMgOCaONa20K20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

26.

1314

70.20.14

16.71.440.090.903.511.900.720.025.91

101.5

69.60.10

19.51.070.061.333.733.650.910.02

52.69.5

38.0

27.

1470

69.50.07

10.90.900.050.050.892.534.310.02

10.10

99.3

73.50.06

13.60.720.040.081.015.195.820.029.0

48.142.9

28.

1544

69.30.07

11.30.960.040.060.842.854.000.029.90

99.4

29.

2131

65.10.11

13.01.330.020.172.622.463.390.01

10.56

98.8

Cation Percent72.90.06

14.10.760.030.090.955.815.360.028.5

43.947.6

69.50.09

16.41.070.010.273.005.094.620.01

25.235.639.2

30.

2226

66.40.14

13.11.450.050.252.432.153.780.019.40

99.2

69.80.11

16.31.150.040.392.744.385.070.01

24.940.334.8

31.

2716

67.70.13

12.21.240.040.202.572.812.400.01

10.11

99.5

71.50.10

15.20.980.030.312.915.753.230.01

26 426.547.1

32.

2792

68.30.16

11.61.320.030.242.942.681.630.02

10.98

99.9

72.70.13

14.61.060.020.383.355.532.210.02

32.519.348.2

Sample Descriptions:

26,

27.

28,

29.

30,

31,

32,

Topopah Spring Member, Paintbrush Tuff. Smectite- and c l inopt i lo l i te-bearing tuff at top of Topopah Spring vitrophyre in diagenetic Zone I .

Clinoptilolite-bearing nonwelded tuff in diagenetic

Clinopti lol i te- and mordenite-bearing nonwelded

Tuff of Calico Hil ls.Zone I I .Tuff of Calico Hi l ls.tuff in diagenetic Zone I I .Prow Pass Member, Crater Flat Tuff. Clinopti lol i te- and mordenite-bearingnonwelded tuff in diagenetic Zone I I .Prow Pass Member, Crater Flat Tuff. Clinopti lol i te- and mordenite-bearingnonwelded tuf f in diagenetic Zone I I .Bullfrog Member, Crater Flat Tuff. Mordenite-bearing nonwelded tuff indiagenetic Zone I I .Tram Member, Crater Flat Tuff. Mordenite-bearing nonwelded tuff indiagenetic Zone I I .

43

APPENDIX A (cont)

D r i l l Hole USW G-4

SampleNumber

Depth ( f t )Si 02Ti02A1203Fe203MnOMgOCaONa20K2OP205LOI

Total

SiTiATFe+3MnMqCaNaKPCa+MgKNa

33.

127974.0

0.1012.41.070.080.310.663.404.000.013.79

99.8

72.20.07

14.30.790.050.450.696.434.980.019.1

39.751.2

Sample Descr ip t ions

3 3 . Topopah34. Topopah

SpringSprina

34 •

132369.

0.13.

1.0.0.3.1.2.0.8.

100.

71,0

160013230

453122

1114130594

.22,23,64.01,90

.7

.6

.09

.3

.88

.04

.45

.58

.47

.49

.01

.7

.8

.5

Member,Member.

35.

138172.90.09

11.31.040.050.493.091.641.880.028.79

101.3

36.

150573.20.09

12.11.020.030.202.461.293.320.006.70

100.4

Cation Percent75.30.07

13.80.810.040.753.423.282.480.02

42.024.933,1

PaintbrushPaintbrush

74.70.07

14.50.780.020.302.692.554.320.00

30.343.825.9

Tuff.Tuff.

37 •

166772.

0 .11 .

1.0.0.2.1.3 .0.7.

99,

74,0

13,0,002240

294227

VitricClinoo

108300,05,12,67,47.47.02.68

.9

.7

.06

.7

.78

.04

.19

.96

.95

.59

.02

.5

.9

.6

38.

208771.30.16

12.61.670.080.541.931.924.350.035.16

99.7

71.50.12

14.81.260.060.812.073.735.560.03

23.745.730.7

3<

230470,

012

10021306

99

720

141002340

303929

basal vitrophyre.t i 1 olite-beariinq

.9

.13

.3

.55

.05

.41

.62

.69

.46

.03

.58

.8

.5

.10

.8

.19

.04

.62

.87

.35

.51

.03

.8

.7

.5

35.

36,

37,

38.

39.

nonwelded tuff in diagenetic Zone I I .Tuff of Calico Hi l ls. Clinoptilolite-bearing nonwelded tuff indiagenet ic Zone I I .Tuff of Calico Hills.d i a g e n e t i c Zone I I .

Clinoptilolite-bearing nonwelded tuff in

Clinoptilolite-bearing nonwelded tuff in

Tuff of Calico Hil ls.diagenetic Zone I I .Prow Pass Member, Crater Flat Tuff. Clinoptilolite-bearingnonwelded tuf f in diagenetic Zone I I .Bullfrog Member, Crater Flat Tuff. Clinopti lol i te- andmordenitef?)-bearing nonwelded tuff in diagenetic Zone I I .

44

APPENDIX A (cont)

D r i l l Hole UE-25b#l(H)

SampleNumber

Depth (ft)

Si 02TiO2A1203Fe203MnOMgOCaONa20K20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

40.

2832

73.00.1212.91.320.130.692.462.072.960.034.53

100.3

72.40.0915.10.980.091.022.613.983.740.0332.033.035.0

41•

2879

67.0.13.1.0.1.3.1.3.0.7.

99,

69,0161023240423818

32528204.30,13,18,75.09.24

.2

.5

.19

.0

.41

.03

.00

.46

.36

.94

.08

.8

.7

.5

42.

3393

67.10.3713.42.6.50.120.763.042.883.500.114.43

98.3

43.

3602

66.30.5314.33.660.120.832.782.803.600.184.10

99.2

Cation Percent67.20.2815.82.000.081.143.275.604.480.0930.430.938.7

65.80.4016.82.730.081.232.965.394.560.1529.632.338.1

44•

3767

68.0.12.3.0.0.2.2.3.0.3.

98.

69,0152012440303534

6488251277,51,28,51,16.63

.0

.0

.36

.1

.46

.08

.16

.71

.45

.51

.14

.1

.2

.7

45•

3835

69.0.13.3.0.1.2.2.3.0.3.

99,

68,0162012540283239

3478,2108,01.02,67.34.17.34

.4

.2

.35

.0

.38

.05

.48

.13

.09

.19

.14

.0

.5

.5

46.

3963

69.60.3413.82.160.031.061.732.493.180.074.98

99.5

69.50.2616.21.620.021.581.854.824.050.0627.932.939.2

Sample Descriptions:

40. Bullfrog Member, Crater Flat Tuff . Mordenite- and c l i n o p t i l o l i t e -bearing nonwelded tu f f in diagenetic Zone I I .

41 . Bullfrog Member, Crater Flat Tuff. Mordenite- and c l i n o p t i l o l i t e -bearing nonwelded tu f f in diagenetic Zone I I .

42. Tram Member, Crater Flat Tuff . Analcime- and calcite-bearingnonwelded t u f f in diagenetic Zone I I I .

43. Tram Member, Crater Flat Tuff . Analcime- and calcite-bearingnonwelded t u f f in diagenetic Zone I I I .

44. Tram Member, Crater Flat Tuff. Analcime-, ca l c i t e - , andkaolinite-bearing nonwelded t u f f in diagenetic Zone I I I .

45. Tram Member, Crater Flat Tuff. Analcime- and calcite-bearingnonwelded t u f f in diagenetic Zone I I I .

46. Tuff of L i th i c Ridge. Analcime- and calcite-bearing nonweldedtu f f in diagenetic Zone I I I .

APPENDIX A (cont)

D r i l l Hole UE-25p#1 Cuttings

SampleNumber

Depth (ft)

S102TiO2A1203Fe203MnOMgOCaONa20K20P2O5LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

47.

1700-1710

73.20.1112.31.360.050.362.372.382.700.026.83

101.6

73.20.0814.51.020.030.542.544.623.450.0227.630.941.4

48.

1730-1740

73.30.1212.71.430.090.302.102.402.910.026.15

101.5

72.90.0914.91.070.060.442.244.633.690.0224.433.642.1

49.

1790-1800

72.60.1412.41.570.060.442.172.252.280.035.34

99.3

50.

2280-2290

72.7,0.1712.21.440.100.402.072.254.250.034.11

99.8

Cation Percent73.50.1114.81.200.040.662.354.412.940.0329.128.442.6

72.00.1314.31.070.070.592.204.325.370.0322.343.034.6

51.

2650-2660

71.50.3212.92.280.111.101.732.724.430.102.74

99.9

69.30.2314.71.660.071.591.805.115.480.0824.239.236.6

52.

2760-2770

72.70.2812.82.290.110.921.932.003.340.033.23

99.6

71.70.2114.91.700.071.352.043.824.200.0329.736.833.5

53.

3430-3440

74.30.1712.61.230.050.290.813.005.220.031.99

99.7

71.40.1214.30.890.030.420.835.596.400.029.4

48.342.2

54.

3560-3570

75.10.111.91.340.050.501.481.775.070.031.78

99.2

73.20.1313.70.980.030.731.553.356.300.0219.152.928.1

Sample Descriptions:

47. Prow Pass Member, Crater Flat Tuff. Clinoptilolite-bearing nonwelded tuf fin diagenetic Zone I I .

48. Prow Pass Member, Crater Flat Tuff. Clinoptilolite-bearing nonwelded tuf fin diagenetic Zone I I .

49. Prow Pass Member, Crater Flat Tuff. Clinoptilolite-bearing nonwelded tuffin diagenetic Zone I I .

50. Bullfrog Member, Crater Flat Tuff. Analcime-bearing nonwelded tu f f 1ndiagenetic Zone I I I .

51. Bullfrog Member, Crater Flat Tuff. Analdme-bearing nonwelded tu f f indiagenetic Zone I I I .

52. Bullfrog Member, Crater Flat Tuff. Analcime-bearing nonwelded tu f f Indiagenetic Zone I I I .

53. Older Tuff Sequence. Authigenic albite-bearing nonwelded tu f f in dia-genetic Zone IV.

54. Older Tuff Sequence. Authigenie albite-bearing nonwelded tu f f in dia-genetic Zone IV.

46

SampleNumber

Depth (ft)

Si 02Ti02A1203Fe203MnOMgOCaONa20K20P205LOI

Total

SiTiAlFe+3MnMgCaNaKPCa+MgKNa

55 •

1457

69.0.10.0.0.0.1.0.3.0.10.

98,

750130002140

314918

,6.08,6,94,05,50,96,88,55.02.14

.3

.7

.07

.6

.77

.04

.81

.28

.85

.92

.02

.3

.9

.8

56 •

1519

69.0.12.1.0.0.1.1.3.0.8.

98.

73,

o.150002250255023

.5081,0104,39.87,22.94.02.65

.9

.4

.06

.1

.80

.03

.61

.12

.50

.31

.02

.9

.4

.7

APPENDIX *

Drill Hoi

57.

1883

75.20.1112.61.440.100.110.683.914.390.020.77

99.3

Cation71.40.0814.11.030.070.160.697.195.310.026.339.853.9

\ (cont)

e J-13

58.

2001

70.10.1913.91.670.020.140.415.552.940.023.74

98.7

Percent68.00.1415.91.220.010.200.4310.443.640.024.324.771.0

59 •

2133

75.0.12.1.0.0.0.4.4.0.0.

99,

71.0,14,100075073853

31164409237502,38,03,30

.3

.1

.08

.0

.02

.06

.32

.76

.36

.27

.02

.9

.5

.6

60 •

2982

74.0.12.1.0.0.0.3.4.0.0.

98.

71,0,13,100065094050

816241052189.70,46.02,94

.8

.5

.12

.8

.02

.03

.30

.91

.86

.44

.02

.0

.3

.8

61 •

2999

70.0.12.2.0.0.2.2.4.0.3.

98,

690141002450253836

.030,4,1810,51,52,55,18.10.81

.6

.8

.22

.5

.63

.07

.76

.69

.93

.31

.08

.2

.8

.0

Sample Descriptions:

55. Tuff of Calico Hil ls.56. Tuff of Calico Hil ls.

Zone I I .57. Prow Pass Member, Crater Flat Tuff.58. Prow Pass Member, Crater Flat Tuff,

diagenetic Zone I I I .59. Bullfrog Member, Crater Flat Tuff. Devitrified partially welded tuf f .60. Tram Member, Crater Flat Tuff. Authigenic albite-bearing nonwelded

tuff in diagenetic Zone IV.61. Tram Member, Crater Flat Tuff. Analcime- and authigenic elbite-bearing

nonwelded tuf f in diagenetic Zone IV.

Clinoptilolite-bearing nonwelded tuff in Zone I I .Clinoptilolite-bearing nonwelded tuff in diagenetic

Devitrified partially welded tuff .Analcime-bearing nonwelded tuff in

APPENDIX A (cont)

Outcrop Samples from Prow Pass, Northern Yucca Mountain8

SampleNumber 62. 63.

FieldNumber

Si 02TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

3-15-82-5

69.50.0812.30.750.070.040.101.080.686.570.018.42

99.7

Cation Percent72.60.0615.20.590.060.030.161.211.388.750.0111.976.212.0

3-15-82-9

660121000007010

99

700150000011007839

.6

.10

.4

.05

.04

.04

.15

.61

.59

.81

.01

.04

.5

.7

.08

.6

.84

.04

.03

.24

.69

.21

.58

.01

.3

.1

.5

SiTiAlFe+3Fe+2MnMgCaNaKPCa+MgKNa

Sample Descriptions:

62. Tuff of Calico H i l l s . C l i nop t i l o l i t e - andmordenite-bearing nonwelded t u f f in Zone I I . NevadaState Coordinates 786500N, 551OOOE.

63. Tuff of Calico H i l l s . C l i nop t i l o l i t e - andmordenite-bearing nonwelded tu f f in Zone I I . NevadaState Coordinates 786700N, 551400E.

These samples analyzed by atomic absorptionspectrophotometry; J. Husler, analyst.

APPENDIX B

COMPARISON OF ANALYSES DETERMINED BY X-RAY FLUORESCENCE ( X R F ) , ATOMIC

ABSORPTION ( A A ) , AND EMISSION SPECTROPHOTOMETRY ( E S ) FOR DRILL CORE SAMPLES

FROM YUCCA MOUNTAIN, NEVADA

D r i l l Hole USW GU-3 and USW G-3

Method

Depth ( f t )

S102TiO2A12O3Fe203FeOMnOMgOCaONa20K2OP205LOI

Total

BaSr

XRF

1986

68.30.12

11.3

1.35a

0.070.230.822.963.610.02

10.32

99.1

AA

1986

67.90.10

12.41.200.030.070.110.873.443.720.02

10.20

100.1

23351

XRF

2577

66.30.12

12.9

1.32

0.100.272.341.903.610.029.83

98.8

Trace

Drill

AA

2577

66.50.11

13.6a 1.17

0.030.090.242.292.483.680.029.60

99.9

Elements367255

Hole USW

ES

2577

66.20.14

12.81.310.010.100.262.272.383.75

10.39

99.6

(ppm)330300

G-3

XRF

3589

66.50.48

13.8

2.85a

0.060.611.832.323.420.166.86

98.8

ES

3589

66.50.49

13.82.590.260.060.571.822.983.65

7.23

100.0

705306

XRF

3854

69.40.16

12.4

1.33a

0.030.661.152.602.980.028.05

98.8

Method ES XRF ES

Depth ( f t ) 3854 4869 4869

SiO2TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

BaSr

69.20.16

12.60.810.460.020.491.103.323.18

8.40

99.8

Trace Elements1130240

71.00.23

12.9

1 CO1 .bo0.050.500.963.622.570.044.11

97.5

(ppm)

71.70.23

13.10.970.570.060.501.044.702.68

4.26

99.9

520200

Total i ron , reported as Fe?0~.

APPENDIX B (cont)

D r i l l Hole USW G-4

Method

Depth (ft)

Si 02TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

BaSr

Method

Depth (ft)

Si 02TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

BaSr

XRF

1470

69.50.0710.90 9Oa

0.050.050.892.184.310.0210.10

98.9

XRF

2226

66.40.1413.1

1.45a

0.050.252.431.653.780.019.40

98.7

AA

1470

69.10.0911.60.740.010.050.040.882.544.500.0110.15

99.7

9025

AA

2226

66.70.1713.41.330.000.040.222.462.153.920.029.27

99.7

269153

ES

1470

69.20.0811.20.720.070.050.030.882.534.40

10.82

100.0

Trace8030

XRF

1544

69.30.0711.3

0.96a

0.040.060.842.384.000.029.90

98.9

Elements

AA

1544

69.00.0711.90.770.020.030.040.682.874.130.019.79

99.4

(ppm)8125

Drill Hole USW G-4

XRF

2716

67.70.1312.2

1.24

0.040.202.572.182.400.0110.11

98.8

Trace

AA

2716

67.80.1213.0

a 0.980.070.040.112.602.812.470.0210.08

100.2

Elements349102

ES

2716

67.80.1312.51.290.140.040.192.702.822.55

10.20

100.4

(ppm)350122

ES

1544

69.10.0611.50.810.040.030.030.752.824.10

10.56

99.8

6030

XRF

2792

68.30.1611.6

1.32

0.030.242.942.031.630.0210.98

99.3

XRF

2131

65.10.1113.0

1.33

0.020.172.621.963.390.0110.56

98.3

AA

2792

67.0.12.

a 1.0.0.0.2.2.1.0.10.

100.

564170

a

9154041303189368,6803.93

.1

ES

2131

65.0.13.1.0.0.0.2.2.3.

11.

100.

17064

712212120215634652

08

1

APPENDIX B (cont)

Dr i l l Hole J-13

Method

Depth (ft)

SiO2TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

BaSr

XRF

1457

69010n

00103010

98

.6

.08

.6

.94a

.05

.50

.96

.77

.55

.02

.14

.3

AA

1457

70.30.0811.30.700.080.060.521.930.883.680.0110.20

99.7

7217

Drill

Method

Depth

Si 02TiO2A1203Fe203FeOMnOMgOCaONa20K20P205LOI

Total

Trace

BaSr

XRF

1519

69,0,12,1,

0,0,1,130.8

98

.5

.08

.1

,01

.04

.39

.87

.04

.94

.02

.65

.7

a

Trace

Hole I

(ft)

Aflt

1519

70.0.12.0.0.0.0.1.1.4.0.8.

100.

0098830405388626.140158

,1

Elements13451

JE-25b/l(

Elements

XRF

2879

67013il

0131307

99

.3

.25

.2

.04

.30

.13

.05

.75

.09

.24

.1

(opm)

H)

i

ES

1519

700120000114

9

100

.0

.08

.2

.74

.14

.04

.37

.86

.18

.13

.29

.0

(ppm)12060

ES

2879

660131001313

7

99

.9

.26

.2

.48

.24

.04

.32

.24

.18

.90

.86

.7

10401060

XRF

2001

700131

0004203

98

.1

.19

.9

.67a

.02

.14

.41

.88

.94

.02

.74

.0

A/\

2001

70,0.14.1.0.0,0.0,5,3,0,3,

100

.5

.19,8,53.03.02.18.38.55.02.02.92

.5

34068

APPENDIX CMAJOR- AND TRACE-ELEMENT CONCENTRATIONS DETERMINED BY NEUTRON ACTIVATION ANALYSIS IN WHOLE-ROCK SAMPLES FROM

DRILL CORE IN DRILL HOLES USW G-l, USW G-2, USW GU-3, AND FROM TUFF OF CALICO HILLS SAMPLES COLLECTED INOUTCROP AT PROW PASS, NORTHERN YUCCA MOUNTAIN

Ml elemental concentration* 1n part» »er Million Iwai) by Might; value* In parenthetit are »2o analytical uncertainties In percent. Strati graphic unittyirixili defined in Table I . Saaple 11tho)ogy: 1) nontaelded to mderately oclded vitric tuff. 2) •oderitely dentely welded #e»1tr1f1«d tuff. ) unalteredvitrophyre, 4) tawctite- and leolitc- "Ich vitrophyrlc tuff, 5) sMctit*- and leolite-ricti notMelded tuff, 61 notwelded to partially welded ieo11te-r1ch tuff.7) * v I trifled flax Breccia or lava, 8) flw breccia or lava witlt «MCt1te or Kolite alteration, 91 unaltered vitrophyric lava.

USW G-l

Otnh( f t l

Unit

Sample

1191

Tpt

LUhology 2

A!

Au

B*

CaCeCl

Co

Cr

Cs

Oy

£u

Fe

Hf

K

La

Lu

H9

Hn

Na

Kb

Sb

Sc

S"

5rTaTb

Th

T1

U

V

Yb

Zn

68700

<0.12

<36O

2B0O

74

<210

<1.6

<13

4.S

4.7

6300

4.3

37100

35

0.37

<5800

490

22800

195

<1.5

2.3

5.6

<6T~

< 1 . 7

<2.3

24.7

<1700

4 . !8

<1B

2.9

1240

Tot

2

68400

<0.12

<380

3800

74<240<0.671.0(60)3.75(8)4.9

0.30(15)6800(10)

5.3

3640041

0.48420

490

2S9OO

184

<1.5

2.42(9)6.0(20)433.1(50)

<1.6

25.2

6004.50

<19

3.5I2S)

37(53)

1286

Tot

4

B73O0

<0.1Z

<290

16100

120

<170

<2.1

<13

8 .5

5.2

8900

7.59030

520.615600500

10100<52

<4.33.4

<8.216502 . 2

<2..135.1860

1.37<16

3 . 3

1319

Tpt

• 3

66700

<0.12

<400

4000

74

570

<0.66

<13S.8(111

5.2

0.21(23)

6300(24)

4.3

33500

30

0.37

<73OO

470

26000

154

<4.3

2.34(11)

<6.7

<76O

<1.5<1.6

22.8<19004.70<223.317(69)

1341

Tot

3

65800

<0.12

<380

4100

77460<1.0

<137.6

5.0

6200

4.332200

32

0.37<63OO

490

26100

160

<1.S

2.2

5.2

<72O

1.1(1001

<2.3

24.4

<1800

4.52

<19

2.3

1357

Tpt

1

68500<0.12

<390500099

280

<2.4<16

10.04.1

6800

4.331100

47

0.37

<6400

520

24000

187

<4.3

2.3

4.9

<72O

<5

<2.3

27.0

<]800

4.05

t »

2.8

1392

Tpt

1

63300

<0.12

0506200

77

290

<0.60

<16

11.3(9)

6.0

0.30(17)

7200(20)

6.4

33000

30

0.48

<S900

540

20000

176

<4.3

2.84(9)

<7.1

<66O

2.1(48)<1.7

27.7

<1600

3.46

<19

3.4

47(48)

1436

Tht

6

60800

500042

1.2(9916.6(21)3.2

0.11(73)5800(13)

4.5(22)

24

<180330

22900

3.6(22)43

22

450

4 . 7 ( 2 1 )

1 . 7 ( 3 5 )

1492

Tht

6

61100

<0.12

<300

3900

46

<230

<0.66

<136.7(10)

4.0

0.26(17)

5700(23)

4.3

31300

27

0.37

<59O0

196

21500

193

<4.3

2.33(9)

<5.8

<550

2.55(31!<1.7

24.9

<1400

3.69

<17

2.3

35(69)

1561

Tht

6

61100

<0.36

<390

4900

85

<240

«Z.4

• 1 6

6.9

5.0

6000

3.2

34500

33

0.60

<670O

270

22100

157

<4.3

2.4

5.8

<72O

<5

<2.3

28.0

OBOO

3.87

<18

4.5

1639

Tht

6

66100

<0.12

<33O

3900

49

<220

<0.74

1.0160)

5.1(10)

3 .9

0.22(17)

6900(11)5.33060031

0.24

<180

2S0

22500

157

<4.3

2.48(9)

5.6(22)54<1.4<1.7

22.84304.01<172.6(31)26(98)

1693Tht

6

62SIT<0.12<23O

4800

94•C180

<1.8

<13

6.0

6.4

6000

3.236800

440.48<47OO

104

19800

194

<1.S

2.4

8 .1

<420

1.1(100)

<2.3

29.2

410

4.48

<13

3.5

1748

Tht

6

52300

<0.12

160

4800

45

<220

<2.1<13

5.1

1.5

6500

3.223700

270.11

<S700

126

19100

166

<1.5

2.1<4.6

<510

<1.7

<2.319.5<13004.28<15

1.3

1774Tht

6

67000<0.12650

9100

85

<2402 .0

<16

4.9

4.4

99003.2

Z73OO

37

0.48

<66O0

620

22400

131

<4.3

2.6

<5.5

<800

< 1 . 7

<2.3

18.1

980

4.59

<21

2.6

APPENDIX C (cont)

USW G - l

Depth(ft)

Unit

Sampl?

1820

TCD

Ltthology 6

*u...Qa

Ca

Ce

Cl

Co

Cr

Cs

Oy

Eu

Fe

Hf

K

La

Lu

Mg

Hn

Ha

Rb

Sb

Sc

Sm

Sr

Ta

Tb

Th

T1

U

VYbZn

Zr

6640(1

<0.)2

<430

7000

87

<260

2.0

<18

7.0

4.7

9200

6.4

29900

68

0.38

<690n440

22D00

155

<4.3

1.7

10.3

<77O

<5

<2.3

23.1

<1900

4.33

<21

3.4

1942

Tcp

2

72700

<0.12

<640

<52OO

122

<380

<2.0

<15

1.6

7.9

8500

6.4

36400

51

0.63

<9300

1890

28600

134

4.3

1.8

7.7

<13OO

<5

<2.3

21.9

<3100

4.57

<35

3.8

1983

Tcp

2

70800

3400

77

4.5

4.0

6.6

0.33

9500

7.5

51

180

260

24800

148

6.6

48

22840

3.1

4.5

2041

TCP

6

65600

<0.12

O20

6100

66

<250

<2.0

<15

5.1

4.1

9600

6.4

30400

38

0.38

<67OO

125

25300

156

<1.5

1.8

6.1

<560

<5

<2.3

21.3

<1500

2.75

<18

2.3

2083

TCD

6

62700

<0.12

190

5100

88

<22O

<2.0

<15

5.4

4.4

8100

5.4

27900

38

0.51

<6300

138

24300

137

<1.5

1.4

6.5

<600

<5

<2.3

20.5

700

3.48

<16

2.7

2136

Tcp

6

64100

<0.12

<430

MOO79

<27O

<2.2

<18

5.4

3.7

9400

6.4

26700

34

0.25

<7200

420

24500

159

<4.3

1.8

5.5

<780

<5

<2.3

22.2

<1900

2.65

<21

2.4

2173

Tcb

6

73000

<0.1?

500

6400

138

<240

<2.8

<18

3.6

4.6

13200

6.4

46900

83

0.38

<6200

274

2060O

170

<4.3

2.8

7.6

<62O

<5

<2.3

19.2

1400

2.17

<18

2.7

2233

Tcb

6

70300

<CA2

560

7200

114

<26O

3.4

3.7

4.8

0.51

9700

7.2

41900

59

0.45

<180

490

21000

152

<4.3

1.09

7.6

120

<3.2

<2.0

22.1

980

3.20

<22

3.2<120

2247

Tcb

6

72000

0.12

540

7700

139

<28O

<2.2

<15

5.3

4.0

10400

6.4

36600

70

0.38

<73OO

1040

21800

190

<4.3

1.2

8.8

<940

<5

<2.3

25.5

<23O0

3.07

<25

3.7

2291

Tcb

6

67700

<0.12

440

15000

109

<300

<2.8

<15

3.4

6.9

8900

5.4

17700

77

0.51

<76OO

610

25700

81

<4.3

1.2

8.7

<860

<5

<2.3

22.7

1100

3.68

<24

3.7

2318

Tcb

6

93600

<0.12

700

7600

127

<290

<0.63

<15

0.66(441

4.8

0.68(131

11600

10.2

50400

71

0.38

<73OO283

26900

118

<4.3

1.36

8.3

<69O

3.0(38)

<1.7

29.3

1340

4.08

<22

2.4

79(34)

2436

Tcb

2

69600

<0.12

410

<35OO

93

'290

<2.0

<15

3.2

5.1

8900

5.4

37800

48

0.63

<8100

840

25400

187

<4.3

1.0

7.4

<1000

<1.7

<2.3

21.9

<25OO

4.«6

<26

4.6

2486

Tcb

2

72200

<0.12

350

4400

98

<27O

<0.60

3.6

4.6

6.3

0.52

9900

7.3

34000

58

0.63

<180

620

29700

174

<4.3

1.90

6.3

100

2.2

<1.S

22.5

880

4.09

<22

4.4

76(31)

2555

Tco

6

66700

<0.12

420

9000

89

<2ao<2.2

<15

5.9

5.3

7800

4.3

19900

38

0.51

<7400

320

28000

97

<1.5

0.9

5.2<720

<1.7

<2.3

18.6

<1800

3.71

<21

3.2

APPENDIX C (cont)

USW G - l

Depth(ft)

UnH

Sample

Lithologv

Al

Au

Ba

Ca

Ce

Cl

Co

Cr

Cs

Dy

tu

Fe

Hf

K

La

Lu

MflHn

Na

Rb

Sb

Sc

Sm

Sr

Ta

Tb

Th

T1

U

V

Yb

Zn

Zr

2601

Tcb

4

65000

<0.l2

470

8200

87

<300

<2.0

<12

9.2

3.3

10200

5.4

15400

46

0.3B

<75OO

278

34100

145

<1.5

1.1

6.2

<700

1.1

<2.3

22.3

<1700

3.22

<21

2.2

2641.5

Tct

6

73500

<0.36

1050

8400

255

<22O

1.7(26)

<21

2.9(18)

5.6

1.01(12)

14000

8.7

48500

143

0.38

<6100

360

18600

163<4 3

2.57

12.8

<710

<2.6

0.65(53)

25.4

1700

4.22

13

3.8

46(46)

2869

Tct

2

69900

<0.12

570

5200

103

<260

1.9

<12

6.4

3.0

9700

5.4

34900

61

0.38

<67OO

940

24200

145

<1.5

2.2

6.1

<820

<1.7

<2.3

20.0

<2000

4.01

<22

2.4

2966

Tct

2

75000

<0.12

810

8800

140

<23O

2.5

<15

3.1

5.4

12300

5.4

42100

76

0.51

<5800

41023000

170

<4.3

3.2

8.8

<610

<1.7

<?.3

25.1

1600

4.25

16

2.8

3001

Tct

2

69000

<0.12

570

6300

117

<250

1.67

3.0

1.66

3.9

0.59

9100

5.9

39700

64

0.38

1200

500

21600

99<1.S

2.43

5.6

130

1.1

<1.6

23.7

1140

4.14

<19

3.0

<110

3053

Tct

6

69200

".0.12

1050

11700

147

<250

3.3

<15

8.6

3.6

15700

5.4

28800

74

0.38

<6B00

580

25300

101<4.3

2.7

8.5

<aio<5

<2.3

20.0

1900

3.76

?2

2.5

3137

Tct

5

B1500

<0.12

770

14600

105

<22O

7.4

2?

7.0

5.9

24900

5.4

27800

56

0.51

4500

49024000

122<4.3

6.3

10.0

460

<5

<2.3

17.4

3200

2.52

57

3.6

3197

Tct

5

69200

<0.12

880

9400

96

<190

4.8

9

4.9

3.3

20300

5.4

21200

55

0.25

4300

253

22300

125<4.3

4.7

6.4

270

<1.7

<2.3

18.5

2160

1.51

332.5

3258

Tct

5

71700

<0.12

900

15000

101

<230

4.0

4.9

4.0

3.9

1.11

ldlOO

6.0

27100

55

0.38

3400

430

21700

118<4.3

4.31

5.6

320

<1.4

0.77(47)

18.9

2120

3.38

37

2.7

47(34)

3321

Tct

5

70500

<0.12

830

6700

90

<180

3.9

<15

7.3

3.5

14700

4.3

30900

40

0.38

4200

193

19300

133<4.3

3.8

5.7

<520

1.1

<Z.3

20.1

1440

3.12

22

2.7

3372

Tct

5

77300

<0.36

770

12200

101

130

6.6

11

11.4(13)

3.3

1.33(12)

25000

6.2

29400

66

0.38

4900

51022000

111<4,3

6.72

6.7

<640

<2.9

<1.9

19.5

2660

3.17

522.7

92(28)

3433

Tct

5

81 BOO

<0.36

900

14900

99

<190

6.4

23

10.4

4.6

29300

6.4

25700

52

0.51

6600

284

20300

107

<4.3

9.3

7.6

460

<5

<2.3

17.5

3700

3.02

712.5

3501

Tct

5

73000

<0.12

750

9200

105

<21Q

7.2

15

8.0

3.9

1.18

25100

5.8

28100

58

0.38

5800

500

16400

130

<4.3

6.94

5.4

250

<2.B

U.917.2

2800

3.16

612.5

62(36)

APPENDIX C (cont)

USW G - l

Depth(ft)

Unit

3549

Tct

SamoleLUhologv 4

Al

Au

Ba

Ca

Ce

Cl

Co

Cr

CsDy

EuFe

Hf

K

La

Lu

Mg

Mn

Na

Rb

Sb

5c

Sm

Sr

Ta

Tb

Th

T1

U

V

Yb

Zn

Zr

79300

<0.36

390

3500

no<26O

0.76(47)

<21

48(13)

5.8

0.61(15)

U100

6.4

22500

52

0.51

<75OO

122

31800

118

<4.3

2.57

7.4

<710

<3.4

<1.9

28.5

<1800

4.07

<19

3.7

<92

3598

Tfb

7

78500

<0.36

1380

21400

130

<210

3.2

<19

3.9

4.9

20300

8.6

24700

73

0.49

<5500

310

25100

129

<4.3

8.8

8.1

<52O

<5

<2.3

14.9

4300

2.66

37

3.3

3669

Tfb

8

84100(5)

0.0030(90)

1380(5)

21900(8)

129(5)

<200

4.1(6)

2.6(45)

2.9(9)

5.2(15)

2.06(5)

21000(5)

7.5(5)

33600(15)

65(7)

0.41(6)

2700(45)

515(6)

26300(4)

114(6)

0.25(51)

8.1(6)

10.2(7)

570(33)

0.81(13)

1.05(11)

15.3(4)

4400(11)

2.88(6)

40(12)

2.70(5)

114(14)

275(19)

3706

Tfb

8

96500

<0.36

1160

25500

147

<190

5.9

<19

3.4

5.6

27600

9.7

27600

79

0.37

9300

193

21900

170

<4.3

10.1

9.1

670

<5

<2.3

18.6

5500

4.51

52

2.2

3755

Tfb

8

81300

<0.36

2700

25200

11?

<27O

4.8

<19

3.9

5.5

27200

7.5

27400

730.48

4600

660

25200

79

<4.3

9.0

8.9

560

<5<2.3

15.3

4100

2.82

43

4.1

3B10

Tfb

B

95500

<0.36

910

32200

156

<23O

7.1(10)

5.4(63)

4.2(10)

6.3

2.84(10)

47800(6)

10.2

3900

80

0.37

15400

340

24700

<92

<4.3

11.5(8)

9.1(20)

B70

<3.0

<1.7

17.8

5500

3.43

53

3.1(32)

116(25)

3R50

Tfb

B

84400

<0.36

1330

29600

146

<28O

6.0

<22

7.4

4.1

28200

8.6

11900

74

0.48

6000

1040

26400

65

<4.310.6

9.6

750

-.5

<2.3

15.5

4500

4.08

47

4.1

3914

Tfb

8

101000

<0.36

1680

31800

162

<27O

7.2

<22

2.3

5.8

39800

10.7

9700

650.4B

9300

720

29400

47

<4.3

11.9

9.7

800

<5

<2.3

19.6

5500

3.69

60

4.5

3954

Tlr

5

80600

<0.12

1760

9800

161

<24O

2.4

<19

10.6

5.4

14600

8.6

41100

94

0.48

5300

270

18400

177

<4.3

2.7

7.7

410

<5<2.3

18.5

2310

4.21

16

3.9

3997

Tlr

b

78800

<O,36

1370

9900

154

<26O

2.7

<19

10.4

5.2

18700

7.5

28700

'9

0.60

<7100

410

32400

103

<4.3

2.9

9.1

<740

<5

<2.3

17.3

2220

3.27

30

3.4

4052

Tlr

6

76400

<0.12

1040

12300

125

<310

2.4

<16

5.3

4.8

14700

6.4

25100

710.37

<7600

650

30300

118

<4.3

2.7

4.6

<810

<5

<2.3

19.0

1420

2.97

22

2.9

4095

Tlr

fa

76200

<0.12

970

7400

125

<250

3.0

<13

6.5

5.5

13100

6.4

28400

64

0.37

3500

400

32500

119

<1.5

2.8

3.4

<62O

<1.7

2.3

18.9

1400

4.71

22

3.2

4208

Tlr

6

72600

<0.12

960

9200

110

<260

3.9(11)

4.8(33)

3.04(11)

4.5

1.20(11)

16600(8)

6.8

30200

63

0.37

3300

400

25600

136

<4.3

4.1(8)

4.8(21)

230

2.9(45)

<1.8

17.6

2070

2.85

39

2.4(33)

89(271

0 1 APPENDIX C (cont)

USM G - l

Depth(ft)

Unit

4296

Tlr

SampleLithology 6

Al

Au

Ba

Ca

Ce

Cl

Co

Cr

CsOy

Eu

Fe

Hf

K

La

Lu

MgMn

Na

Rb

Sb

Sc

Sm

Sr

Ta

Tb

ThT1

UV

Yb

Zn

Zr

74300

<0.12

780

7400

UO

<240

2.3

<16

4.6

3.B

12900

5.4

33800

54

0.49

5100

520

26700

129

<4.3

2.7

4.0

<690

<1.7

<2.3

19.4

1220

2.61

16

2.7

4401

Tlr

5

77500

<0.12

770

9700

99

<220

2.6

<13

3.2

3.5

12100

6.4

34100

57

0.37

3900

3B0

26000

125

<1.5

2.7

3.8

<620

<1.7<2.3

17.8

1590

2.95

21

2.7

4451

Tlr

6

68700

<0.12

850

8800

98

<230

1.5

<13

5.7

3.0

9600

5.4

26500

54

0.37

<59O0

320

31100

117

<1.5

2.0

3.1

<580

<1.7

<2.3

17.4

1130

3.07

16

2.1

4504

Tlr

6

70600

<0.12

690

7600

88

<240

2.3

<13

4.7

3.8

12000

5.4

31900

54

0.38

3700

350

24400

113

<1.5

2.7

3.4

<610

1.1(100)

<?..?

17.6

1710

1.69

19

2.9

4612

Tlr

6

73000

<0.12

810

7100

106

<22O

3.3

<16

4.7

3.9

15000

5.4

31700

54

0.37

5300

340

24300

115

<4.3

3.0

4.5

300

<1.7

<2.3

16.7

1840

2.57

29

2.6

4652

Tlr

6

73400

<0.12

750

7000

109

<210

2.8

<16

4.3

3.6

13500

5.4

32300

63

0.37

<5400

390

22000

155

<4.3

3.1

4.1

<600

2.2<2.3

20.0

1360

2.80

17

3.1

4700

Tlr

6

71300

<0.12

760

6000

107

<190

2.7(13)

4.2(38)

3.67(10)

3.7

0.81(11)

12100(8)

6.0

35600

56

0.37

3300

300

21400

171

<1.5

2.75(9)

4.5(22)

220

1.1(100)

<1.7

18.7

1560

3.06

20

2.'2(361

49(43)

260(62)

4750

Tlr

6

70500

<0.12

850

6500

101

<23O

2.9

<13

4.1

3.7

14000

6.4

33600

56

0.37

3600

330

21600

146

<1.5

2.7

4.0

<600

<1.7

<2.3

18.1

1510

2.89

17

2.3

4805

Tlr

6

73300

<0.12

930

9700

126

<22O

2.3

<16

4.1

4.3

12100

5.4

34000

63

0.37

4300

410

21400

135

<4.3

2.3

5.3

<670

<1.7

<2.3

19.9

1340

2.67

18

3.8

4848

Mr

6

72100

<0.12

840

7100

124

<200

2.9

<16

4.6

4.6

13200

6.4

35300

73

0.37

3600

320

21800

145

<4.3

3.0

4.4

<560

1.1(100)

<2.3

21.5

1210

2.99

18

2.8

4913

Tlr

6

67900

<0.12

720

7600

92

<180

2.1

<13

3.8

3.9

11200

5.4

38100

53

0.48

4000

380

14200

168

<1.5

2.0

3.0

<540

<1.7

<2.3

19.9

1540

2.93

13

3.6

APPENDIX C (cont)

USW G - l

Deett(ft)Unit*Staple

4958 4998Totd) Tot(*l

lithology 6

Al

Au

t*

C«

c.Cl

Co

Cr

Ct

OyEuFeHfK

L

Lu

"5Mn

H*

KbSi>

ScS«

Sr

T*

Tb

Th

T1

U

V

TbZnZr

6440C

<0.12

4604600

101

<26O

1.0

<13

«.«

4.1

90005.42750065

0.49

3700

550

23200

113<.4.31.34.7

<690

1.1(100)

<2.3

20.1

1160

1.71

<203.5

5

72000

<0.12540

11900113

<190

0.93(261

<13

1.47(14)

4.7

0.70(12)

11000(14)

S.91910055

0.49

7400

650

12S00

79<1.5

1.59(915.4

<72O

2.09(25)

<1.5

19.0

1490

2.64

<18

3.058(30)210(55)

5049Tot<*>

S

124000

<0.36

1820

10500202<240

4.1(11)

<I9

1.06(35)

5.2

1.05(12)

24700(12)10.84140098

0.59

14900

1350

12000

328

<4.3

5.9(8)<12

<980

2.61(26)

<1.9

54.0

<240O

8.63

34

4.3

235(20)

5094TotUI

2

69300

<0.12

790

9900104<2J0

3.3(491

1.0(40)

4.50.68

102005.9(2014330054

0.602300

640

17900

157<4.3

1.564.1

220

2.24(37)

<2.0

17.S

1220

4.56

<203.7

49(47)

5167T.t(t)

6

70100

<O.l2890

5700109

<210

1.1<13

3.2

4.1

99005.4

3820057

0.37

<5800

360

22900

153<1.S

1.65.6

<63Q<1.7

<2.3

17.4

1070

3.61

112.9

5213TotUI

«

75000

«0.12840

5300120

< 2 «1.3

<13

S.O

3.9

115006.4

3130070

0.37

«4O0

400

30300

146<1.5

1.94 .2

<S60

1.1(100)

<2.3

21.8

1320

4.11

132.9

5252TotUI

t

74500

<0.12690

9000116

<2201.4

<13

S.9

4.6

9700S.3

3480070

0.42

<S700

520

30600

170<1.S

1.53.8<660

<1.7

<2.3

18.6

1100

3.56

<192.8

5296TotU)

&

71300

<0.12•60

6500125

<24O1.17(191

3.9(72)

•.5(12)

4.40.84(11)

10200(10)

6.2

3230064

0.48720

44030600

140<4.3

1.85(10)

4.8(21)

190<1.5

<1.6

18.5

1260

2.75

193.2(31)59(38)

5413Tot(b)

6

67700

<0.121000

5900109

<1901.6

«136.0

3.7

110005.4

3120059

0.37

4600

28720100

141<1.S

1.43.9

<5*0<1.7

18.7

eon3.07

8.63.4

1 Letters 1n strenthetes Indicate uibunitt with the sequence of older tuffs <nd lavas Identified 1n dri l l hole USWG-l by Soengler et i l . (1981). Thus far, these subunits have not been correlated to equivalent units In otherYucc« Mountain dril l holes.

enCO APPENDIX C (cont)

USW G - l

Deotn(ft)Unit*

Sample

$458

Tot(c)

Lithology 5

»1

Au

Ba

Ca

Ce

Cl

Co

Cr

Cs

Dy

Eu

Fe

Hf

K

La

Lu

Hg

Mn

Na

Rb

Sb

ScS*

Sr

Ta

Tb

Th

T1

U

y

Yb

Zn

83500<0.1219(014400

125<200

2.35(12)

<16

7.9(9)

6.01.21(12)19200(12)

11.920900

75

0.48

11300

510

18900

145<4.33.06(8)

6.6650

1.9(38)

<1.6

21.0

20203.24

18

3 . 2

99(26)

$499

Tot(cl

6

72800

<0.12

1210

12100

115

<260

2.3

<13

9.7

2.6

14100

6.4

2570074

0.25

5400

420

27000

120

<4.3

2.34 . 0

440

<1.7

<2.3

17.4

1620

2.27

19

2.3

5560

Tot(c)

5

81200

<0.12

3120

21000

118

<230

4.0

<16

2.2

3.2

196006.4

22400

60

0.38

6100

690

20800

118

<4.3

3.05.01420

<1.7

<2.3

17.7

2860

2.16

33

2.9

5596

Tot(c)

6

82700

<0.12

1740

18500

101<260

3.7

<13

6.4

1.9

186006.4

23500

63

0.25

5900

630

31600124

<4.3

2 .7

3.9<75O<1.7

<2.3

13.4

1280

2.11

30

2 .4

b*37

Tot(c)

6

77900

<0.12

1450

15200

119

<25O

3.6(11)

5.5(40)

9.2

3.11.2818200

8 . 0

25200

69

0.33

5200

517

33700

125<1.S

3.04 . 5

360

<1.5

<1.5

17.2

2200

2.88

332.363(69)

5699

Tot(c)

6

88500

<0.12

1570

21200

117

<?4O

6.0

<16

3.8

2.1

23200

7 . 5

24900

78

0.25

5700

640

29800

133<4.3

4 . 4

4 . 9

860

<5

<2.314.7

2290

2.39

45

2 . 4

5747

Tot(c)

6

85000

<0.12

1710

17000

134

<24O

5.8

<13

6.0

3.7

23200

7.5

25400

800.37

7100

55028600

145<4.3

4.54 . 9

600<1.7

<2.3

17.1

2440

2.56

40

2.3

5803Tot(c)

2

85900<0.12

1570

27500119

<300

4.4(10)

<16

1.24(28)

3.51.41(12)20300(12)

1790083

0.25

2900

63032300

113

<4.3

3.64(8)4 .7

630<1.5

<1.8

14.7.

29502.52

39

2.257(35)

5848

Tot(c)

j

c

84800

<0.12

1950

14600

121

<27O

6.8

<16

1.8

3.0

242007 .5

22200

650.37

9300

55033000

134

<4.3

4 . 2

5.5560<1.7

<2.313.9

2960

3.06

47

2.4

5898

Tot(c)

2

112000

<0.36

1130

20000

148

<25O

5.2

<229.9

4.2

239008 .6

31400

960.389300

59019500

318

<4.3

4 .3

5.7580<5

<2.3

24.0

3090

1.57

533 .9

5948

Tot(c)

6

85900

<0.12

1530

19100

113<27O

8.2(10)

<1610.4(10)

4.11.40(12)24800(13)

7.7

17700

660.38

7800

78033100

128<4.3

5.8(8)

5.46101.1(100)

<1.815.7

2640

2.10

603.0

<35

5980

Tot(c)

5

88400

<0.12

1800

22100

121<300

7.3(10)

81.48(30)

4.2

1.75(12)

28400(12)

23400

71

0.37

10300

56031200

136

<4.36.6(8)5.9

710

<2.8

<1.814.5

3140

2.5056

2.3

1 Letters In parentheses Indicate subunits with the sequence of older tuffs and lavas Identified In dril l hole USW G-l by Spengieret a l . (1981). Thus far, these subunits have not been correlated to equivalent units 1n other Yucca Mountain dri l l holes.

APPENDIX C (cont)

USH G-2

Depth

UnitSampleLKhology

A1Au

Ba

Ca

CeCl

Co

Cr

C*

ByEu

FeHfK

La

Lu

MgMn

Ma

RbSb

ScSmSrTa

Tb

Th

T1

UVYb

ZnZr

547

Tpp

1

75000<0.021750

9000

161260

<2

4.5

6.2

1.5010400

8.3340UO

87

0.50

8000

620

26150

141<0.8

4.210.1

290

0.5

22.3

2100

3.2

123.8

430

675

Too

S

85000<0.022150

16000185

<110

4

6.8

8.3

1.9212100

9.121500

116

0.49

9000

680

10000

87

<l.O4.8

12.2

1600

0.7

26

2100

1.54

214.4

380

1691

Tpt

6

62000

0.06(15)

<140

16000

35

<90

<2

11.1

3.6

0.24

61004.229500

23.9

0.17

<2000

141

8300

161

2.34.6

<100

0.29

24

<6002.44

<6<2.4

<3O0

usw

1322

Tpt

1

66000

<0.02

<2O03200

76

580

<2

6.2

5.2

0.24

61004.6

4400043

0.5

<3000

520

27000

188

2.3

<7

<300

0.5

24.3

<700

4.6

<72.9

260

GU-3

1498

Tht

1

66000

<0.02235

6000106

840

63.7

7.5

0.24

85006.240500

68

0.8

3000

560

25350

160<0.51.89.5

<300

0.7

21.3

1000

4.2

<83.4

<300

Tuff of C«t1co H i l l s In outcrop.Prow Pass, northern Yucca Mountain

3-15-82-5Tht

6

65QOO

<0.01330

8000

S3<70

<26.6

4.20.25

57003.6

5500030.3

0.30<1000

290

4600

220<0.4

2.65.0

<200

0.19

23.1

<500

3.02

<52.3

3-15-82-9

Tht

6

61000<0.01

160

460073

<60

4.3

3.6

3.60.27

75O04.1

6650037

0.24

2000

2603605

1%<0.4

2.8

5.2

<200

0.34

20.9

BOO

2.61

<61.8

RUG2a-l

Tht

9

63000

<0.02355

5200

81

330

<25.5

4.7

0.33

65003.245000

44

0.67<2000

380174SO

206<0.62.5

5.2

<200

0.526.0

<5O0

4.6

<62.3

<100 <100 <100

'Nevada State Coordinates ( f t ) for sanpleRWG2a-l-7874OOH, S532SOE.

locations: 3-15-82-5-7865O0N, 551OOOE; 3-15-82-9-7867OON. 551400E;

APPENDIX D

ANALYTICAL VALUES FOR NBS STANDARDSBY AUTOMATED NEUTRON ACTIVATION ANALYSIS

Values are from Tables 1 and 2 of Garcia et al. (1982). Analyses wereunder conditions identical to those for values of Appendix C. Valuesprovided by the NBS in parentheses are uncertified. Standard deviationsare based on 24 analyses of SRM 1632a and 50 analyses of SRM 1633a.

Element

AlBaCaCeClCoCrCsDyEuFeHfKLaLuMgMnNaRbSbScSmSrTaTbThTiUVYbZn

SRM

Average(ppm)

30700150270031.18976.6362.42.560.51112001.8430015

0.18140033.7

884

6.56

2.5

4.817201.2846.9

1632a Coal

±2 a(%)

8.23413225.234347020321636303474327.27.2

7.028

24201211

NBS(ppm)

(30700)

(30)

(6.8)34

(2.4)

(0.54)11100(1.6)

28

(6.3)

4.5(1750)1.2844

SRM 1633a

Average(ppm)

142000150011200183

46.219710.6

2.98950007.78184001000.93450019117201307.840.6208192.02.324.8806010.230110220

Coal Fly

±2 a

U)

4.4 (121422

7.61321

226.422154621224.55.640406.344134658139.24.25.23646

Ash

NBS(ppm)

140000)(1500)11100(180)

(46)196(11)

94000(7.6)18800

4550(190)1700131(7)(40)

830

24.7(8000)10.2(300)

220

60

APPENDIX E

GLASS COMPOSITIONS DETERMINED BY ELECTRON MICROPROBEFOR TUFFS OF YUCCA MOUNTAIN, NEVADA

Depth(ft).U n i t a

S1O2T1O2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCaBaNaK

331

Tpy

73.70.14

12.10.910.000.280.004.264.64

96.0

71.40.10

13.80.660.000.290.008.015.74

4.94

331

Tpy

72.50.18

12.30.880.000.260.004.564.43

95.1

70.70.13

14.10.650.000.270.008.625.51

4.78

Drill Hole USW

331

Tpy

72.90.15

11.80.890.000.250.004.454.53

95.0

331

Tpy

72.40.16

12.20.880.000.260.004.624.34

94.9

Cation Percent71.30.11

13.60.650.000.260.008.445.65

70.80.12

14.00.650.000.270.008.755.41

Si/(A1+Fe)5.02 4.83

G-2

331

Tpy

72.20.13

12.10.690.000.260.004.684.35

94.4

70.80.10

14.00.510.000.270.008.905.44

4.90

331

Tpy

73.30.10

12.10.810.000.270.004.554.37

95.5

71.20.07

13.80.590.000.280.008.575.42

4.94

331

Tpy

73.00.13

11.90.840.000.240.004.594.00

94.8

71.50.10

13.80.620.000.250.008.725.00

4.97

331

Tpy

" 73.10.10

11.30.650.000.230.004.523.92

93.8

72.40.07

13.20.480.000.240.008.684.95

5.29

{Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.01 0.97 1.00 0.97

Mol% Exchangeable Cations

0.99 1.01 0.97

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

40.957.0

2.1

76.80.15

12.60.950.000.290.004.444.83

38.359.9

1.9

76.20.19

12.90.930.000.270.004.804.66

39.458.81.8

37.560.6

1.9

Oxides Recalculated76.80.16

12.40.940.000.260.004.694.77

76.40.17

12.80.930.000.270.004.874.58

37.260.9

1.9

to 100%76.50.14

12.80.730.000.280.004.964.61

38.060.12.0

76.80.10

12.60.850.000.280.004.774.58

35.862.4

1.8

77.10.14

12.60.890.000.250.004.844.22

35.762.51.8

77.90.11

1 2 . 10.690.000.250.004.824.18

Unit symbols defined in Table I .

61

APPENDIX E (cont)

D r i l l Hole USW G-2

Depth(ft)Un i t a

Si 02TiO2A1203Fe203MgOCaOBaONa20K2O

Total

SiTiAlFeMgCaBaNaK

331

Tpy

72.00.16

12.20.910.000.250.004.434.23

94.2

71.00.12

14.20.680.000.260.008.475.32

4.78

1.04

358

Tb

72.00.16

11.70.830.008.190.003.994.22

93.1

72.10.12

13.80.630.000.200.007.755.39

5.01

1.06

358 358 358

Tb Tb Tb

72.5 74.1 73.20.13 0.10 0.13

11.6 11.8 11.90.77 0.62 0.660.00 0.00 0.000.18 0.21 0.240.00 0.00 0.004.33 4.40 4.544.22 3.99 3.95

93.7 95.2 94.6

Cation Percent71.90.10

13.60.570.000.190.008.335.34

72.30.07

13.60.460.000.220.008.334.97

Si/(A1+Fe)5.08 5.13

71.80.10

13.70.490.000.250.008.644.94

5.05

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.03 1.01

Mol% Exchangeable Cations

94.8

72.00.0813.70.600.000.230.008.335.08

5.03

1.03

547

Tpp

71.10.1311.80.850.000.560.003.244.71

92.3

72.10.1014.10.650.000.610.006.376.10

4.89

1.08

547

Tpp

73.00.0911.90.730.000.540.003.364.84

94.5

72.30.0714.00.540.000.570.006.456.12

4.99

1.06

KNaCa+Mq

SiO2TiO2A12O3Fe203MgOCaOBaONa20K20

3 7 . 960.3

1.9

76.40.17

12.90.970.000.270.004.704.49

40.458.11.5

77.40.17

12.50.890.000.200.004.294.53

38.560.1

1.4

Oxides77.3

0.1412.40.820.000.190.004.624.50

36.861.61.6

Recalculated77.80.11

12.40.650.000.220.004.624.19

35.7 .62.41.8

to 100%77.40.14

12.50.700.000.250.004.804.17

37.261.11.7

77.40.12

12.50.850.000.230.004.624.28

46.648.7

4.7

77.00.14

12.70.920.000.610.003.515.10

46.549.1

4.4

77.20.10

12.60.770.000.570.003.565.12

62

APPENDIX E (con t )

D r i l l Hole USW G-2

Depth(fthUnita

Si 02TiO2AT 203Fe203MgOCaOBaONa20K20

Total

CationSiTiAlFeMgCaBaNaK

547

Tpp

72.20.0912.20.760.000.510.003.675.07

94.5

Percent71.30.0714.10.560.000.540.007.026.39

Si/(A1+Fe)4.84

(Al+Fei/(2Mg+2Ca+2Ba+Na+K)1.02

Mol% Exchangeable CationsK 45.8Na 50.4Ca+Mg 3.9

Oxides Recalculated to 100%Si 02TiO2A12O3Fe203MgOCaOBaONa20K20

76.40.1012.90.800.000.540.003.895.37

APPENDIX E (cont)

D r i l l Hole USW GU-3

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

356

Tpc

74.10.13

12.20.730.000.050.114.005.05

96.4

71.70.09

13.90.530.000.050.047.506.23

4.98

356

Tpc

74.40.05

11.90.400.000.050.023.785.30

95.9

72.30.04

13.60.290.000.050.017.126.57

5.21

356

TDC

73.70.03

11.21.230.110.890.004.432.77

94.4

1195

TDt

74.90.10

11.90.740.000.210.193.405.78

97.2

Cation Percent72.90.02

13.10.920.160.940.008.493.49

5.20

72.20.07

13.50.540.000.220.076.357.10

Si/(A1+Fe)5.15

1227

Tpt

74.20.09

11.70.140.000.340.003.365.31

95.1

72.80.07

13.60.100.000.360.006.406.65

5.32

1227

Tpt

73.70.04

12.00.600.000.400.003.395.61

95.7

71.90.03

13.80.440.000.420.006.416.98

5.06

1227

Tpt

73.40.05

11.70.910.050.590.163.405.45

95.7

71.80.04

13.50.670.070.620.066.456.80

5.07

1227

Tpt

73.50.08

11.70.830.000.270.133.315.63

95.4

72.20.06

13.50.610.000.280.056.307.05

5.12

KNaCa+Mg

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.04 1.01 0.99 1.00 0.99 1.00 0.96 1.01

Mol% Exchangeable Cations45.2 47.8 26.7 52.0 49.6 50.5 48.8 51.754.4 51.8 64.9 46.5 47.7 46.4 46.3 46.20.4 0.4 8.4 1.6 2.7 3.0 5.0 2.1

Oxides Recalculated to 100%Si 02TiO2A1203Fe203MgOCaOBaONa20K20

76.90.1312.60.760.000.050.114.155.24

77.60.0512.40.420.000.050.023.945.53

78.10.0311.91.300.120.940.004.692.93

77.10.1012.20.760.000.220.203.505.94

78.00.0912.30.150.000.360.003.535.58

77.00.0412.50.630.000.420.003.545.86

76.70.0512.20.950.050.620.173.555.69

77.00.0812.20.870.000.280.143.475.90

64

APPENDIX E (cont)

Drill Hole USW GU-3

Depth(ft)Unit

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

1227

Tpt

74.10.1111.80.730.000.240.073.415.55

96.0

1227

Tpt

96.0 95.9 95.5

1227

Tpt

74.20.0411.70.200.000.310.003.475.58

95.5

1303

Tpt

74.60.0911.90.770.020.290.003.425.59

96.7

1303

Tpt

1303

Tpt

96.5 95.5

Cation PercentSiTiAlFeMgCaBaNaK

72.20.0813.60.540.000.250.036.446.90

5.12

1.02

72.70.0713.30.600.000.230.026.196.95

5.24

72.20.0613.60.700.000.390.006.146.85

72.40.0513.50.340.010.550.055.957.16

Si/(A1+Fe)5.04 5.23

72.50.0313.50.150.000.320.006.576.95

5.30

(Al+Fe)/(2Mg+2Ca+2 Ba+Na+K)1.02 1.04 0.97 0.96

72.20.0713.50.560.030.300.006.416.90

5.12

1.01

73.10.0113.20.280.000.370.006.246.80

5.41

0.98

71.90.0313.80.510.060.340.056.446.86

5.01

1.01

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

50.847.4

1.8

77.20.11

12.30.760.000.250.073.555.78

52.046.3

1.7

77.50.09

12.00.840.000.230.043.415.81

Mol% Exchangeable51.245.9

2.9

52.443.54.1

Cations50.247.5

2.3

Oxides Recalculated to 100%77.10.08

12.30.990.000.390.003.385.73

77.30.07

12.20.480.010.540.143.285.99

77.70.04

12.30.210.000.320.003.635.84

50.647.0

2.4

77.20.09

12.30.800.020.300.003.545.78

50.746.5

2.8

78.10.01

12.00.390.000.370.003.445.70

50.147.0

2.9

76.90.04

12.50.720.040.340.133.555.75

65

Depth( f t ) .Un i t a

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

Si 02TiO2M203Fe203MgOCaOBaONa20K20

1303

Tpt

74 .10.04

12.10.660.000.340.003.585.66

96.5

71.60.03

13.80.480.000.350.006.716.98

5.01

0.99

49.747.8

2.5

76.80.04

12.60.680.000.3b0.003.715.86

1303

Tpt

74.40.07

11.90.550.000.290.123.445.66

96.5

72.10.05

13.60.400.000.300.056.467.00

5.14

0.99

50.847.0

2.2

77.10.07

12.40.570.000.300.123.565.87

APPENDIX

D r i l l

1303

Tpt

7 4 . 10.03

11.70.540.000.360.003.205.68

95.6

Cation72.60.02

13.50.400.000.380.006.077.09

Si/5.23

E (cont)

Hole USW

1394

Tpt

73.90.00

11.80.850.020.430.003.494.93

95.4

i Percent72.40.00

13.60.630.030.450.006.646.17

'(Al+Fe)5.08

GU-3

1394

Tpt

72.40.05

11.70.800.020.430.003.414.89

93.7

72.30.04

13.70.600.030.460.006.606.23

5.05

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.00 1.04 1.04

Mol% Exchangeable Cations52.444.8

2.8

46.450.03.6

Oxides Recalculated77.50.03

12.20.560.000.380.003.355.94

77.40.00

12.40.890.020.450.003.665.17

46.849.6

3.7

to 100%77.3

0.0512.40.850.020.460.003.645.22

1394

Tpt

73.60.05

12.00.780.000.430.063.694.80

95.4

72.10.04

13.80.570.000.450.027.016.00

5.01

1.03

44.652.13.4

77.20.05

12.50.820.000.450.063.875.03

1537

Tht

74.50.01

12.10.630.000.600.753.214.92

96.7

72.50.01

13.90.460.000.630.296.066.11

5.04

1.03

47.847.4

4.9

77.00.01

12.50.650.000.620.783.325.09

1537

Tnt

73.90.07

11.80.710.000.570.003.065.13

95.3

72.80.05

13.70.530.000.600.005.846.44

5.10

1.06

50.045.3

4.7

77.60.07

12.40.740.000.600.003.215.38

66

APPENDIX E (cont )

D r i l l Hole USW GU-3

Depth( f t ) .Unit3

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlF?MgCaBaNaK

1537

Tht

73.9O.O7

11.80.550.000.600.003.135.00

95.1

1537

Tht

73.10.04

12.10.580.000.520,003.385.05

94.8

1537

Tht

73.90.07

11.80.710.000.570.003.065.13

95.3

Cation Percent72.9

0.0513.70.410.000.630.005.986.29

5.15

72.10.03

14.00.430.000.550.006.466.35

Si/(A1+Fe)4.98

72.80.05

13.70.530.000.600.005.846.44

5.10

1571

Tcp

74.60.05

11.90.750.000.401.573.354.86

97.5

72.50.04

13.60.550.000.420.606.316.02

5.12

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.04 1.04 1.06

Mol% Exchangeable Cat ions

0.98

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

48.746.4

4.9

47.548.4

4.1

Oxides Recalculatec77.70.07

12.40.580.000.630.003.295.26

77.10.04

12.70.610.000.550.003.575.33

50.045.3

4.7

1 to 100%77.60.07

12.40.740.000.600.003.215.38

47.249.5

3.3

76.50.05

12.20.770.000.411.613.444.99

APPENDIX E (cont)

D r i l l Hole USW G-4

Depth(ft).Unit3

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCABANAK

1432

Tht

73.70.1111.90.690.020.490.003.384.98

95.3

Cation72.40.0813.80.510.030.520.006.436.24

Si/(5.06

1432

Tht

74.30.0611.90.740.070.530.183.355.01

96.2

Percent72.40.0413.70.540.100.550.076.336.23

Al+Fe)5.09

1432

Tht

73.80.0711.70.790.050.440.003.334.99

95.2

72.60.0513.60.590.070.460.006.356.27

5.11

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.04 1.01 1.04

Mol% Exchangeable CationsK 47.2 47.1 47.6Na 48.7 47.9 48.3Ca+Mg 4.1 5.0 4.1

Oxides Recalculated to 100%Si 02TiO2A1203Fe203MgOCaOBaONa20K20

77.30.1212.50.720.020.510.003.555.22

77.30.0612.40.770.070.550.193.485.21

77.50.0712.30.830.050.460.003.505.24

68

Depth(ft)Unit

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

1312

Tht

73.90.04

12.00.670.000.430.003.274.91

95.2

72.70.03

13.920.500.000.450.006.246.16

5.04

1312

Tht

74.30.04

12.10.830.000.410.003.295.09

96.1

APPENDIX E

D r i l l Hole

1312

Tht

73.40.02

12.00.850.000.430.003.035.39

95.1

Cation Percent72.50.03

13.910.610.000.430.006.226.33

-

4.99

72.40.01

13.950.640.000.450.005.796.78

Si/(A1+Fe)4.96

(cont)

USW H-4

1312

Tht

74.00.05

12.30.770.000.450.003.384.96

95.9

72.20.04

14.150.570.000.470.006.396.17

4.91

1312

Tht

74.00.05

12.00.830.000.490.003.285.37

96.0

72.20.04

13.800.610.000.510.006.206.68

5.01

1312

Tht

74.00.01

12.00.730.000.430.003.165.25

95.6

72.60.01

13.870.540.000.450.006.016.57

5.03

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.08 1.08 1.08 1.09

Mol% Exchangeable Cations

1.04 1.07

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa2OK20

47.948.5

3.5

77.610.04

12.600.700.000.450.003.435.16

48.847.9

3.3

52.044.5

3.5

Oxides Recalculated77.350.04

12.600.860.000.430.003.425.30

77.160.02

12.610.900.000.450.003.195.67

47.449.0

3.6

to 100%77.160.05

12.820.800.000.470.003.525.17

49.946.3

3.8

77.070.05

12.500.860.000.510.003.425.59

50.446.1

3.5

77.420.01

12.550.760.000.450.003.315.49

Depth(ft).Unita

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCaBaNaK

450

Tpc

74.60.09

11.90.710.000.140.044.214.90

96.6

71.90.07

13.50.510.000.140.027.866.02

5.12

450

Tpc

73.60.10

11.80.770.000.180.114.284.66

95.5

71.70.07

13.50.560.000.190.048.085.79

5.08

APPENDIX E

Dril l Hole

450

Tpc

72.30.09

11.80.620.000.200.204.244.65

94.1

450

Tpc

73.70.05

11.60.830.010.200.204.344.64

95.6

(cont)

USW H-5

1610

Tpt

74.30.03

12.00.730.020.450.063.425.05

96.1

Cation Percent71.40.07

13.70.460.000.210.088.125.86

5.03

71.80.04

13.30.610.010.210.088.205.77

72.40.02

13.80.540.030.470.026.466.28

Si/(A1+Fe)5.15 5.06

1762

Tht

73.70.05

11.80.760.000.490.003.324.96

95.1

72.60.04

13.70.560.000.520.006.346.23

5.09

1762

Tht

73.70.05

11.70.640.000.480.143.524.96

95.2

72.40.04

13.60.470.000.510.056.716.22

5.16

1762

Tht

72.80.07

12.00.660.000.480.003.474.75

94.2

72.20.05

14.00.490.000.510.006.676.01

4.97

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.99 0.98 0.98 0.96 1.04

Mol% Exchangeable Cations

1.05 1.00 1.06

KNaCa+Mg

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

42.956.0

1.0

77.20.09

12.30.740.000.140.044.365.07

41.257.5

1.3

77.10.10

12.40.810.000.190.124.484.88

41.357.2

1.5

Oxides76.80.10

12.50.660.000.210.214.514.94

40.657.8

1,6

47.448.8

3.8

Recalculated to77.10.05

12.10.870.010.210.214.544.86

77.30.03

12.50.760.020.470.063.565.26

47.648.4

4.0

100%77.50.05

12.40.800.000.520.003.495.22

46.349.9

3.8

77.40.05

12.30.670.000.500.153.705.21

45.650.63.9

77.30.07

12.70.700.000.510.003.685.04

7n

DeDth( f t ) .Uni t a

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiAlFeMqCaBaNaK

1762

Tht

73.00.02

12.00.710.000.450.003.414.90

94.5

72.20.01

14.000.530.000.480.006.546.19

4.97

APPENDIX E

Dri l l

1800

Tht

74.40.02

11.80.690.000.530.233.305.13

96.1

Cation72.60.01

13.580.510.000.550.096.256.39

Si/(5.16

Hole I

1800

Tht

74.60,00

11.70.470.000.520.003.485.18

95.9

(cont)

JSW H-5

1966

Tcp

72.70.03

11.70.790.000.460.003.045.02

93.7

i Percent72.70.00

13.440.340.000.540.006.576.44

Al+Fe)5.27

72.80.02

13.810.600.000.490.005.906.41

5.05

1966

Tcp

72.50.04

11.70.800.000.390.002.925.15

93.5

72.80.03

13.850.600.000.420.005.696.60

5.04

1966

Tcp

72.30.05

11.80.840.000.380.002.995.00

93.4

72.70.04

13.990.640.000.410.005.836.41

4.97

{Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.06 1.01 0.98 1.08

Mol% Exchangeable Cations

1.10 1.12

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

46.849.5

3.6

77.260.02

12.700.750.000.480.003.615.19

48.447.4

4.2

47.548.54.0

Oxides Recalculated77.420.02

12.280.720.000.550.243.435.34

77.750.00

12.190.490.000.540.003.635.40

50.146.1

3.9

to 100%77.55

0.0312.480.840.000.490.003.245.36

51.944.8

3.3

77.540.04

12.510.860.000.420.003.125.51

50.746.1

3.2

0.000.000.000.000.000.000.000.000.00

71

APPENDIX E (cont)

D r i l l Hole UE-25a#l

Depth( f t ) .Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

226

Tpc

73.70.16

12.60.770.050.420.004.055.24

97.0

70.60.12

14.30.560.070.430.007.536.41

4.76

226

Tpc

73.90.21

12.60.750.020.470.004.045.43

97.5

70.50.15

14.20.540.030.480.007.476.61

4.78

251

Tb

72.50.14

11.30.710.000.470.002.795.58

93.5

72.90.11

13.40.540.000.510.005.447.15

5.23

251

Tb

72.50.07

11.50.810.000.430.003.245.06

93.6

251

Tb

73.10.10

11.40.670.020.39COO3.195.42

94.3

Cation Percent72.50.05

13.60.610.000.460.006.296.46

Si/(A1+Fe)5.11

72.60.07

13.30.500.030.420.006.156.87

5.26

251

Tb

68.40.00

14.31.760.180.750.063.895.72

95.0

66.70.00

16.51.290.260.780.027.367.12

3.76

251

Tb

73.00.08

11.30.690.000.380.003.335.05

93.8

72.90.06

13.30.520.000.410.006.456.43

5.28

277

Tb

70.50.00

13.40.920.050.430.073.485.92

94.7

69.20.00

15.50.680.070.450.036.637.42

4.28

(Al +Fe)/(2Mg+2Ca+2 Ba+Na+K)0.99 0.98 1.02 1.04 0.99

Mol% Exchangeable Cations

1.07 1.01 1.07

KNaCa+Mg

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

44.452.13.5

76.00.16

13.00.790.050.430.004.185.40

45.351.23.5

75.80.22

13.00.770.020.480.004.145.57

54.641.5

3.9

48.947.6

3.5

Oxides Recalculatec77.50.15

12.10.760.000.500.002.985.97

77.40.07

12.30.870.000.460.003,465.41

51.045.7

3.3

J to 100%77.50.11

12.10.710.020.410.003.385.75

45.947.4

6.7

71.90.00

15.11.850.190.790.064.096.02

48.448.5

3.1

77.80.09

12.00.740.000.410.003.555.38

50.945.5

3.6

74.40.00

14.10.970.050.450.073.676.25

72

APPENDIX E (cont)

D r i l l Hole UE-25a#l

Depth( f t ) .U n i t a

SiO2TiO2A1203Fe203MgOCaOBaOMa2OK20

Total

SiTiAlFeMgCaBaNaK

111

Tb

6 7 . 10.00

15.10.890.140.780.013.955.90

93.8

65.90.00

17.50.660.210.820.007.537.40

3.63

111

Tb

67.30.00

15.00.860.140.750.053.676.64

94.5

65.80.00

17.30.630.200.790.026.958.28

3.66

277

Tb

73.40.00

11.60.370.000.130.002.826.42

94.8

111

Tb

72.70.01

11.60.460.000.150.002.646.59

94.2

Cation Percent72.60.00

13.50.280.000.140.005.40•8.09

5.25

72.40.01

13.60.340.000.160.005.108.37

Si/Ul+Fe)5.19

277

Tb

72.80.07

11.50.470.000.150.003.505.81

94.3

72.00.05

13.40.350.000.160.006.717.33

5.22

111

Tb

72.60.07

11.50.360.000.140.003.026.39

94.1

72.10.05

13.50.270.000.150.005.828.10

5.25

277

Tb

71.70.08

11.60.750.000.15COO2.846.17

93.2

72.10.06

13.70.570.000.160.005.547.91

5.05

111

Tb

68.70.18

13.50.730.000.380.003.885.98

93.3

68.10.13

15.80.540.000.400.007.467.56

4.17

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.04 1.00 1.01 0.96

Mol% Exchangeable Cations

0.97 1.04 1.03

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

46.447.2

6.4

71.50.00

16.10.950.150.830.014.216.29

51.042.9

6.1

71.30.00

15.90.910.150.790.053.887.03

59.439.6

1.0

Oxides77.50.00

12.30.390.000.140.002.976.77

61.437.4

1.2

Recalculated77.20.01

12.30.490.000.160.002.807.00

51.647.3

1.1

to 100%77.2

0.0712.20.500.000.160.003.716.16

57.641.4

1.1

77.20.07

12.20.380.000.150.003.216.79

58.140.7

1.2

76.90.09

12.40.800.000.160.003.056.62

49.048.4

2.6

73.60.19

14.50.780.000.410.004.166.41

APPENDIX E (cont)

D r i l l Hole UE-25a#l

Den'en( f t )Unit

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

Si 02TiO2A1203Fe203MqOCaOBaONa20K20

277

Tb

68.70.20

13.40.730.000.370.003.486.60

93.5

277

Tb

68.20.21

13.50.560.000.350.004.166.24

93.2

1279

Tpt

74.40.00

11.40.470.000.380.003.694.57

94.9

Cat ion Percent68.20.15

15.70.540.000.390.006.698.35

67.40.16

15.80.420.000.370.007.987.88

Si/(A1+Fe)4.19 4.17

73.20.00

13.30.350.000.400.007.045.74

5.38

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.03 0.98

Mol% Exchangeable54.143.42.5

48.549.2

2.3

Oxides Recalculated73.50.21

14.40.780.000.400.003.727.06

73.10.23

14.50.600.000.380.004.466.69

1.00

Cations43.553.4

3.0

to 100%78.40.00

12.00.500.000.400.003.894.81

2113

Tcp

75.10.00

11.40.290.000.870.003.114.59

95.4

73.90.00

13.20.210.000.920.005.935.76

5.50

0.99

45.747.0

7.3

78.80.00

11.90.300.000.910.003.264.81

74

APPENDIX E (cont)

D r i l l Hole J-13

Depth(ft)Unit

Si 02TiO2A1203Fe203MgOCaOBaONa20K2O

Total

SiTiAlFeMgCaBaNaK

1421

Tot

75.90.08

12.40.310.000.280.00

.36

.78

98.1

72.30.06

13.90.220.000.290.006.217.02

5.13

1.02

1421

Tot

77.50.11

12.20.810.040.290.173.276.00

100.3

72.40.08

13.40.570.060.290.065.937.16

5.17

1.01

1421 1421

Tpt Tpt

76.60.11

12.50.820.050.310.073.485.76

39.3 99.7

1427

Tpt

74.20.00

11.80.750.000.230.073.884.87

95.8

Cation Percent72.50.06

13.40.540.040.270.036.017.07

71.90.08

13.80.580.070.310.036.336.90

Si/(A1+Fe)5.19 5.00

72.30.00

13.50.550.000.240.037.336.05

5.15

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 1.02 1.01

Mol% Exchanqeable Cations

1427

Tpt

75.30.00

11.90.810.000.240.003.984.91

97.1

72.30.00

13.50.590.000.250.007.416.01

5.13

1.01

1427

Tpt

75.30.00

12.10.210.000.150.123.944.97

96.8

72.50.00

13.70.150.000.150.057.356.10

5.23

1.00

1427

Tpt

73.80.00

12.10.430.000.150.213.954.92

95.6

72.00.00

13.80.320.000.160.087.476.12

5.08

1.01

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

52.045.92.1

77.40.0812.60.320.000.290.003.435.89

53.344.12.6

Oxi77.20.1112.10.810.040.290.173.265.98

52.844.82.4

50.746.52.8

des Recalculated77.40.0912.20.770.030.270.073.305.91

76.80.1112.50.820.050.310.073.495.78

44.453.81.8

to 100%77.50.0012.30.780.000.240.074.055.09

44.054.21.8

77.50.0012.30.830.000.250.004.105.06

44.854.01.1

77.80.0012.50.220.000.160.124.075.14

44.554.31.1

77.30.0012.60.450.000.160.224.135.15

7R

APPENDIX E (cont)

D r i l l Hole J-13

Depth(ft).Unit3

SiO2TiO2A1203Fe203MgOCaOBaOMa20K2O

Total

SiTiAlFeMgCaBaNaK

1507

Tht

74.20.0012.00.730.000.400.003.335.78

96.5

71.90.0013.70.530.000.420.006.267.15

5.05

1507

Tht

74.40.0012.10.730.000.420.023.375.73

96.7

Cation71.90.0013.80.530.000.440.016.327.07

Si/(5.03

1507

Tht

74.90.0012.00.830.000.350.003.365.86

97.3

Percent72.00.0013.60.600.000.360.006.267.18

Al+Fe)5.06

1575

Tht

74.30.0811.90.580.040.460.093.214.98

95.7

72.90.0613.80.430.060.480.036.106.23

5.13

1575

Tht

72.30.0811.60.740.050.450.003.255.01

93.5

72.40.0613.70.560.070.480.006.316.40

5.07

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.00 1.00 1.00 1.05

Mol% Exchangeable Cations

1.03

KNaCa+Mg

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

51.745.33.0

Oxides76.90.0012.40.760.000.410.003.455.99

51.145.73.1

52.045.32.6

Recalculated to76.90.0012.50.750.000.430.023.495.93

76.90.0012.40.850.000.360.003.456.02

48.447.44.2

100%77.70.0812.40.610.040.480.093.355.20

48.247.64.2

77.30.0912.40.790.050.480.003.485.36

76

APPENDIX E (cont)

Outcrop at Prow Pass, Northern Yucca Mountain-

Sample Number: 3-15-82-11; Nevada State Coordinates ( f t ) 786550N, 551400E

Part ia l ly welded tu f f near base of Topopah Spring Member, Paintbrush Tuff

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMqCaBaNaK

72.40.02

11.60.540.000.400.003.524.73

93.1

72.60.02

13.70.410.000.430.006.856.05

5.16

72.70.05

11.60.460.000.410.003.534.77

93.5

72.60.04

13.50.350.000.440.006.846.08

5.20

74.60.05

11.50.35G.000.43O.UO3.464.44

94.9

73.80.03

11.80.440.000.450.003.584.58

94.6

Cation Percent73.60.04

13.40.260.000.450.006.625.59

5.39

72.90.02

13.70.330.000.480.006.855.77

Si/(A1+Fe)5.20

72.60.03

11.50.470.000.400.003.334.70

93.0

73.10.02

13.60.360.000.430.006.496.03

5.23

72.70.00

11.60.660.000.450.003.544.79

93.7

72.50.00

13.60.500.000.480.006.856.10

5.15

72.70.00

.1.70.520.010.420.003.684.75

93.8

72.30.00

13.70.390.010.450.007.106.03

5.13

72.30.03

11.70.610.000.410.003.524.82

93.3

72.30.02

13.80.460.000.440.006.836,15

5.08

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 1.01 1.04 1.03 1.04

Mol% Exchangeable Cations

1.01 1.00 1.03

KNaCa+Mg

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

45.451.43.2

77.70.02

12.40.580.000.430.003.785.08

45.551.23.3

77.80.05

12.30.490.000.440.003.785.10

44.152.33.6

44.052.33.6

Oxides Recalculatec78.70.05

12.10.370.000.450.003.654.68

78.00.03

12.40.460.000.480.003.784.84

46.550.13.3

i to 100%78.10.03

12.30.510.000.430.003.585.05

45.451.03.6

77.60.00

12.30.700.000.480.003.785.11

44.452.2

3.4

77.50.00

12.50.550.010.450.003.925.06

45.850.93.3

77.40.03

12.50.650.000.440.003.775.16

77

APPENDIX E (cont)

Outcrop at Prow Pass, Northern Yucca Mountain

Sample Number: 3-15-82-11

Partially we!den tuff near base of TopopahSpring Member, Paintbrush Tuff

SiO2TiO2A1203Fe203MgOCaOBaONa20K2OTotal

SiTiAlFeMgCaBaNaK

70.90.0411.80.690.000.430.003.384.7492.0

Cation72.10.0314.10.530.000.470.006.666.14

Si/(4.92

72.30.0411.90.350.000.390.003.484.7293.2

Percent72.40.0314.10.260.000.420.006.766.03

Al+Fe)5.04

71.60.0011.60.630.000.480.003.314.72

W7T

72.50.0013.90.480.000.520.006.506.10

5.04

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.05 1.06

Mol% Exchangeable CationsK 46.3 45.7 46.5Na 50.2 51.2 49.5Ca+Mg 3.5 3.2 4.0

Oxides Recalculated to 100%Si 02TiO2A1203Fe203MgOCaOBaONa20K20

77.10.0412.80.750.000.470.003.675.15

77.50.0412.80.380.000.420.003.745.07

77.50.0012.60.680.000.520.003.585.11

78

Depth(ft)Unita

iO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

APPENDIX F

CLINOPTILOLITE COMPOSITIONS DETERMINED BY ELECTRON MICROPROBE,YUCCA MOUNTAIN, NEVADA

D r i l l Hole USW G- l

1286

T p t

63.5-0.0012.60.000.285,0,

.09.00

0.870.57

82.9

1436

Tht

68.90.00

12.40.000.000.880.002.295.89

90.4

1561

Tht

65.70.00

11.60.020.000.620.00

.60

.87

1561

Tht

69.50.00

11.80.180.00Q.560.002.30

1561

Tht

63.40.00

10.90.000.000.57

64

.00

.29

.99

85.4 90.1 82.1

1639

Tht

66.50.00

11.50.000.020.730.092.594.56

86.1

Uni t -Ce l l Composition Based on 72 (0)

1774

Tht

68.10.00

12.20.000.091.110.03

8420

88.5

1774

63.80.00

11.90.000.121.430.123.182.25

82.8

SiTiAlFeMgCaBaNaK

KNaCa+Mq

29.20.006.860..000.192.510.000.780.33

4.26

1.05

8.820.470.9

29.80.006.320.000.000.410.001.923.25

4.71

1.06

58.334.4

7.3

29.90.006.220.010.000.300.002.292.83

Si4.80

30.00.006.030.060.000.260.001.933.11

/(Al+Fe)4.93

30.00.006.090.000.000.290.002.103.01

4.93

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.09 1.10

Mol% Exchangeable52.142.3

5.6

58.736.44.9

i.O7

Cations55.838.9

5.3

30.00.006.130.000.010.350.022.262.62

4.89

1.09

49.943.1

7.0

29.80.006.280.000.060.520.012.412.35

4.74

1.06

44.045.210.9

29.70.006.500.000.080.710.022.871.33

4.57

1.11

26.757.415.9

Unit symbols defined in Table I .

APPENDIX F (cont)

D r i l l Hole USW G-l

Depth(ft)Unita

SiO2TiO2AT 203Fe203MqOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK.

KNaCa+Mq

1819

Tcp

68.20.00

11.80.000.071.070.002.633.86

87.6

30.00.006.100.000.050.510.002.252.17

4.92

1.11

43.745.211.1

1819

Tcp

66.40.00

11.30.370.091.140.082.683.02

85.1

Uni30.00.006.030.130.060.550.012.351.74

4.88

1.15

37.049.913.0

2083

Tcp

67.30.00

11.70.000.070.780.083.133.34

86.4

2166

Tcp

68.90.00

12.70.230.090.710.083.843.77

90.3

t-Cell Composition30.00.006.160.000.050.370.012.711.90

4.88

(Al+Fe)/(1.12

29.60.006.410.070.060.330.013.202.07

2290

Tcb

70.20.00

13.40.000.182.110.002.562.96

91.4

Based on29.5

0.006.680.000.110.950.002.091.59

Si/(A1+Fe)4.57 4.43

2Mg+2Ca+2Ba+Na+K!1.07

Mol% Exchangeable37.353.88.3

36.656.66.8

1.15

Cations33.544.022.4

3598

Tfb

66.20.00

12.50.760.001.561.124.250.69

87.1

72 (0)29.40.006.550.250.000.740.203.660.39

4.32

I1.15

8.276.415.5

3598

Tfb

63.00.08

12.70.440.041.590.984.750.57

84.2

29.00.036.900.150.030.790.184.250.34

4.12

1.08

6.278.715.1

3598

Tfb

64.30.19

12.50.910.121,510.864.570.53

85.5

29.10.066.680.310,080.730.154.010.31

4.17

1.12

6.078.215.9

APPENDIX F ( c o n t )

D r i l l Hole USW G- l

Depth(ft)Uni td

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

3706

Tfb

69.60.00

10.70.060.001.900.143.500.07

86.0

Unit-Cell Composition BaseSiTiAlFeMqCaBaNaK

30.60.005.550.020.000.900.022.980.04

Si/(A1+Fe)5.50

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.14

Mol% Exchangeable C a t i o n sK 1.0Na 76.2Ca+Mg 22.8

APPENDIX F (cont)

D r i l l Hole USW G-2

Depth(ft)Unita

Si 02T1G2A1203Fe203MgOCaOBaONa2OK20

561

Tpp

68.60.00

12.40.001.053.970.000.221.31

561

Top

67.50.00

13.00.001.174.290.000.210.98

561

Tpp

67.70.00

12.80.000.984.180.000.281.37

561

Tpp

65.60.00

12.90.000.934.410.000.261.06

561

Tpp

67.60.00

12.40.001.033.860.000.231.18

561

Tpp

66.80.00

12.60.000.994.230.000.191.27

584

Tpp

62.60.03

13.30.001.414.410.120.020.63

584

Tpp

65.60.00

13.80.001.474.230.020.181.09

Total 87.6 87.2 87.4 35.1 86.4 86.0 82.6 86.3

Un i t -Ce l l Composition Based on 72 (0)SiTiAlFeMgCaBaNaK

KNaCa+Mq

29.70.006.350.000.681.840.000.180.72

4.68

1.07

21.15.4

73.5

29,40.006.700.000.762.000.000.180.54

4.39

1.07

15.65.1

79.3

29.50.006.590.000.641.950.000.240.76

4.48

29.30.006.780.000.622.110.000.230.60

Si/(A1+Fe)4.33

29.70.006.450.000.671.820.000.200.66

4.61

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.08 1.10

Mol% Exchangeable Cations21.2

6 .672.2

17.06.3

76.7

19.85.9

74.4

29.50.006.570.000.652.000.000.160.72

4.49

1.06

20.34 . 6

75.1

28.90.017.250.000.972.180.020.020.37

3.98

1.08

10.50 .5

89.0

28.90.007.170.000.972.000.000.150.61

4.03

1.07

16.44.1

79.4

Depth(ft)Unita

SiO2TiO2AT 203Fe203MqOCaOBaONa20K20

Total

SiTiATFeMgCaBaNaK

KNaCa+Mq

58^

TDD

67.00.00

13.60.001.354.160.00

- 0.030.75

86.9

29.20.006.990.000.881.950.000.030.42

4.18

1.15

12.80.8

86.4

584

TPD

62.10.00

13.60.001.534.030.000.130.97

82.3

APPENDIX F

DriV

584

TDP

61.10.00

13.50.001.553.980.070.140.95

81.3

1 Hole

584

Tpp

61.60.00

14.00.001.754.090.000.120.59

82.2

Unit-Ce.il Composition 128.70.007.420.001,062.000.000.120.57

3.87

1.09

28.70.007.450.001.082.000.010.130.57

Si3.85

28.50.007.660.001.212.030.000.110.35

(cont)

USW G-2

584

Tpp

62.90.00

14.00.001.864.080.090.100.54

83.5

3ased on 7228.6

0.007.530.001.261.990.020.090.31

/(Al+Fe)3.72 3.80

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.08 1.11

Mol% Exchangeable15.3

3.181.6

15.03.4

81.6

9.42.9

87.6

1.09

Cations8.62.4

89.0

657

Tpp

67.50.00

13.30.030.984.110.510.111.28

87.8

(0)29.40.006.810.010.641.920.090.090.71

4.30

1.12

21.22.8

76.1

657

Tpp

67.20.00

13.40.330.954.070.420.251.6?.

88.2

29.20.006.860.110.621.900.070.210.90

4.19

1.11

24.85.8

69.4

657

Tpp

65.40.0!

13.30.210.9:3.9!0.2;0.1'1.6!

86.0

29.10.06.90.00.61.80.00.10.9

4.1

1.1

26.53.4

70.2

APPENDIX F (con t )

D r i l l Hole USW G-2

Depth( f t ) .Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAl -.FeMgCaBaNaK

657

TDP

67.20.00

13.10.030.903.900.400.361.86

87.7

29.40.006.720.010.591.830.070.311.04

4.36

762

Tpt

68.40.05

11.70.240.782.940.000.232.39

86.8

Unit-Cel30.00.026.070.080.511.380.000.201.34

4.88

1691

Tpt

67.90.00

12.40.020.042.970.000.963.79

88.1

1 Compos29.70.006.420.010.031.390.000.822.12

4.63

1691

Tpt

66.30.00

12.30.010.003.140.070.843.55

86.2

1745

Tht

64.60.00

12.60.040.003.570.161.022.78

84.8

ition Based on 7229.70.006.490.000.001.510.010.732.03

S1/(A1+Fe)4.57

29.40.006.770.010.001.740.030.901.61

4.34

1745

Tht

64.90.00

12.60.010.003.410.161.323.26

85.6

(0)29.40.006.700.000.001.650.031.161.88

4.39

1745

Tht

66.70.00

12.00.000.003.520.140.963.77

87.1

29.70.006.310.000.001.680.020.832.14

4.70

1745

Tht

65.00.04

12.60.010.003.200.031.323.45

85.7

29.40.016.720.000.001.550.011.161.99

4.37

1.07 1.16[Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.11 1.12 1.12 1.05 0.99

KNaCa+Mg

278

64

.6

.1

.3

Mol% Exchangeable Cat ions39.1 48.7 47.6 37.95.7 18.7 17.1 21.2

55.2 32.6 35.3 40.9

1.07

402435

.1

.7

.2

461736

.1

.8

.1

422433

.4

.6

.0

Depth(ft)Unit3

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

1745

Tht

65.50.00

12.40.000.003.480.001.233.01

1745

Tht

64.60.00

12.50.010.003.490.001.133.20

APPENDIX F

Dri

2078

Tht

70.00.00

11.40.000.452.880.000.662.62

11 Hole

2078

Tht

66.10.00

11.80.000.462.810.000.652.72

(cont)

USW G-2

2158

Tht

66.60.01

12.70.000.563,130.000.972.91

2158

Tht

67.60.00

12.20.000.483.430.000.792.51

2158

Tht

68.30.00

12.70.000.523.360.000.942.84

2158

Tht

68.00.00

12.90.000.543.500.000.582.45

Total 85.6 84.9 88.1 84.6 86.9 87.0 88.6

U n i t - C e l l Composit ion Based on 72 (0)

1.07 1.07(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.11 1.15 1.07

KNaCa+Mg

382437

.6

.0

.5

402137

.8

.9

.3

1.06

Exchangeable Cations39.9 41.2 38.0 35.115.3 15.0 19.2 16.844.8 43.9 42.8 48.1

1.05

88.0

SiTiATFeMgCaBaMaK

29.50.006.610.000.001.680.001.071.73

4.47

29.40.006.710.000.001.700.001.001.86

4.38

30.30.005.830.000.291.340.000.551.45

5.20

29.90.006.310.000.311.360.000.571.57

Si/(A1+Fe)4.74

29.50.006.620.000.371.490.000.831.64

4.45

29.80.006.340.000.321.620.000.671.41

4.70

29.60.006.470.000.341.560.000.791.57

4.58

29.60.006.620.000.351.630.000.491.36

4.47

1.14

361844

.9

.6

.5

351251

.5

.8

.7

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K2O

Total

SiTiAlFeMgCaBaNaK

2158

Tht

68.60.00

11.40.000.413.230.000.422.23

86.3

30.20.005.940.000.271.530.000.361.25

5.09

2158

Tht

66.60.00

11.60.000.513.230.000.772.64

85.4

Uni29.90.006.160.000.341.550.000.671.51

4.85

APPENDIX F

Dr

2325

Tht

69.40.00

12.00.G30.303,450.001.072.36

88.6

i l l Hole

2325

Tht

70.10.00

12.70.030.283.530.000.952.45

90.0

t -Ceil Composition30.00.006.110.010.191.600.000.901.30

4.90

29.80.006.350.010.181.610.000.781.33

(cont)

USW G-2

2430

Tht

70.20.00

11.60.010.362.770.150.642.81

88.5

Based on30.30.005.920.000.231.280.030.54' .55

Si/(A1+Fe)4.69 5.11

2430

Tht

71.30.00

12.00.000.313.080.000.722.71

90.1

72 (0)30.20.006.010.000.201.400.000.591.46

5.02

3067

Tcp

74.10.10

11.40.520.000.340.114.603.04

94.2

30.30.035.500.160.000.150.023.651.59

5.36

3067

Tcp

74.70.10

11.70.730.030.320.164.663.06

95.5

30.20.035.580.220.020.140.033.661.58

5.21

1.14 1.03{Al+Fe)/ (2Mg+2Ca+2Ba+Na+K)

1.06 1.12 1.15 1.15

KNaCa+Mg

361052

.8

.5

.7

371646

.1

.4

.5

Mol% Exchangeable Cations32.6 34.1 43.0 40.122.5 20.1 14.9 16.244.9 45.8 42.1 43.7

1.02 1.04

2967

2

.5

.8

.8

2967

2

.3

.8

.9

APPENDIX F (cont)

D r i l l Hole USW G-2

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K2OTotal

SiTiAlFeMgCaBaNaK

K.NaCa+Mg

3067

Tcp

74.50.07

11.60.800.000.290.084.482.86

94.7

30.30.025.560.240.000.130.013.531.48

5.22

1.10

28.968.7

2.5

3067

TCD

73.40.10

11.60.180.000.290.114.743.17

93.6

3067

TCD

74.30.09

11.7O.7i0.000.340.184.772.87

95.0

3067

Tcp

69.70.00

10.50.000.002.700.182.480.51

86.1

Unit-Cell Composition30.30.035.640.060.000.130.023.791.67

5.31

0.99

29.967.8

2.3

30.20.035.610.220.000.150.033.761.49

5.19

30.70.005.450.000.001.270.032.120.29

3192

Tcp

63.20.00

12.20.050.002.060.003.201.85

82.6

Based on 7229.40.006.700.020.001.030.002.891.10

Si/(A1+Fe)5.63 4.38

(Al +Fe) / (2MaJ.-2Ca+2 t=i+Na+K)1.04 1.09 i l l

Mol% Exchangeable Cations27.669.7

2.7

7.857.634.6

21.957.620.5

3192

Tcp

64.20.03

12.50.180.022.250.003.262.15

84.6

(0)29.30.016.730.060.011.100.102.891.25

4.32

1.07

23.854.921.2

3192

Tcp

63.70.03

12.20.110.002.050.00o.«l1.61

83.3

29.40.016.640.040.001.010.003.230.95

4.40

1.08

18.362.219.5

3192

Tcp

65.00.00

12.50.110.021.910.003.611.77

84.9

29.40.006.680.040.010.930.003.171.02

4.39

1.11

19.961.818.3

APPENDIX F (cont)

D r i l l Hole USW G-2

Depth( f t ) .Unit a

SiO2TiO2A1203Fe203MgOCaOBaONa20K2O

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

3192

Tcp

63.00.05

12.80.540.052.160.173.331.73

83.8

Uni29.10.026.960.190.031.070.032.981.02

4.07

1.14

20.058.421.6

3192

Tcp

66.00.04

12.60.170.002.090.003.262.00

86.2

3192

Tcp

66.20.00

12.80.170.052.430.053.081.99

86.8

t-Cell Composition29.50.016.630.060.001.000.002.821.14

4.40

29.40.006.700.060.031.160.012.651.13

3192

Tcp

65.40.00

12.20.290.001.720.003.322.32

85.3

Based on29.60.006.500.100.000.830.002.911.34

Si/(A1+Fe)4.35 4.48

3250

Tcp

66.90.00

11.60.080.002.33.0.023.730.04

84.7

72 (0)30.00.006.130.030.001.120.003.240.02

4.87

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.12

Mol%23.056.920.2

1.09 1.12 1.12

Exchangeable Cations22.753.423.9

26.357.316.4

0.574.025.5

3250

Tcp

68.20.00

12.00.130.022.370.044.200.13

87.1

29.80.006.190.040.011.110.013.560.07

4.79

1.06

1.574.923.6

DeDth(ft)Unita

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

U95

Tpt

64.70.03

13.20.300.914.280.040.700.36

84.5

29.10.016.990.100.612.060.010.610.21

4.11

1195

Tpt

67.00.04

12.30.250.724.000.130.770.78

86.0

APPENDIX F

Dri l l Hole

1195

Tpt

62.60.02

12.40.000.854.030.000.540.48

80.9

1195

Tpt

64.90.00

12.10.000.793.960.010.590.64

82.9

Unit-Cell Compositior29.60.016.440.080.471.900.020.660.44

4.54

29.40.016.840.000.592.030.000.490.29

4.29

29.70.006.510.000.541.940.000.520.37

(cont)

USW G-3

1195

Tpt

63.10.05

11.80.830.933.850.190.480.94

82.2

i Based on29.40.026.460.290.641.920.030.430.56

Si/(A1+Fe)4.56 4.35

1195

Tpt

70.00.00

12.40.000.563.940.000.701.19

88.8

72 (0)29.90.006.240.000.361.800.000.580.65

4.80

1874

Tcp

69.50.00

12.10.040.001.620.001.464.91

89.7

30.00.006.180.010.000.750.001.222.70

4.85

1874

Tcp

66.50.00

11.20,020.001.690.001.763.95

85.1

30.10.005.990.010.000.820.001.552.28

5.03

1.15 1.11(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.14 1.11 1.09 1.12

KNaCa+Mq

51776

.9

.5

.6

121968

.7

.0

.3

Mol% Exchangeable Cations8.5 l l . l 15.7 19.1

14.5 15.5 12.2 17.177.1 73.4 72.1 63.7

1.14 1.09

572616

.8

.1

.0

493317

.1

.3

.6

APPENDIX F (cont)

D r i l l Hole USW G-3

D-thi f t 'Urji ca

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiT1AlFeMgCaBaNaK

1874

Tcp

67.0.

12.0.0.1.0.1.

,7.00.0,05.00,65.00.58

4.61

87,

2906000012

4

.6

.9

.00

.25

.02

.00

.78

.00

.35

.60

.77

1874

Tcp

67.30.01

12.00.050.001.570.001.845.04

87.8

1874

Tcp

67.60.04

12,00.090.001.840.001.645.44

88.6

1874

Tcp

65.90.00

11.50,000.001.590.001.534.61

85.2

Unit-Cell Composition29.80.006.260.020.000.750.001.582.85

4.75

29.80.016.220.030.000.870.001.403.06

4.76

30.00.006.180.000.000.770.001.352.67

1874

Tcp

68.20.00

11.90.000.001.660.001.684.30

87.8

Based on30.00.006.190.000.000.780.001.432.41

Si/(Al+Fe)4.85 4,84

1874

Tcp

68.20.00

11.90.000.001.950.001.695.20

88.9

72 (0)29.90.006.140.000.000.910.001.432.90

4.86

1874

Tcp

69.00.03

11.80.030.001.590.001.525.05

89.0

30.00.016.070.010.000.740.001.282.81

4.94

1986

Tcp

64.20.00

11.40.000.000.590.001.656.51

84.4

29.80.006.240.000.000.290.001.493.86

4,78

1.14 1.06(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.01 1.11 1.15 1.00

KNaCa+Mg

54.28.16.

965

553014

.1

.5

.4

Mol% Exchangeable C a t i o n s57.4 55.7 52.1 55.326.3 28.1 31.0 27.316.3 16.1 16.9 17.4

1.09 1.05

582615

.1

.6

.4

6826

5

.4

.4

.2

90

APPENDIX F (cont)

DeDth(ft)Uni t a

SiO2TiO2A1203Fe203MgOCaOBaONa20K2O

Total

1986

Tcp

66.60.00

11.60.010.000.640.002.106.12

87.0

1986

Tcp

66.90.00

11.90.060.000.60O.C-J1.966.49

87.9

D r i l l Hole USW G-3

5 1986 1986

68.00.00

11.70.000.000.590.002.135.74

88.1

1986

Tcp

690,

.100

88.1

12.30.000.000.610.002.605.51

90.1

1986

Tcp

36.3

1986

Tcp

55.60.00

11.70.050.000.660.002.115.91

86.0

SiTiAlFeMgCaBaNaK

29.90.006.130.000.000.310.001.833.51

4.88

1.03

U n i t - C e l l Compos i t ion Based on 72 (0)29.8

0.006.250.020.000.290.001.693.69

4.75

1.05

29.80.006.280.000.000.330.001.893.24

4.75

30.00.006.070.000.000.280.001.823.24

Si/(A1+Fe)4.95

29.90.006.180.020.000.300.002.183.08

4.82

KNaCa+Mg

6232

5

.1

.4

.5

6529

5

.1

.9

.1

{Al +Fe)/(2Mg+2Ca+2Ba+Ma+K)1=09 1.08 1.06

Mol% Exchangeable Cations59.4 60.6 55.434.6 34.2 39.2

6.0 5.2 5.4

29.90.006.260.000.000.280.002.183.04

4.77

1.G8

55.239.6

5.1

29.60.006.410.050.000,290.002.123.51

4.58

1.04

59.335.8

4.8

29.80.006.280.020.000.320.001.863,43

4.73

1.06

61.133.2

5.7

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

1986

Tcp

650

11000025

85

300F000013

4

1

6033

6

.8

.00

.3

.20

.00

.66

.00

.05

.56

.5

.0

.00

.08

.07

.00

.32

.00

.81

.23

.87

.08

.2

.8

.0

1993

Tcp

67.80.00

12.10.000.000.640.002.405.86

88.8

Uni29.80.006.290.000.000.300.002.053.29

4.73

1.06

58.336.3

5.4

APPENDIX F

Dril l

2577

Tcb

67.30.00

12.10.000.183.020.111.831.74

86.3

Hole

2577

Tcb

67.00.02

12.70.000.273.090.001.661.87

86.6

t-Cell Composition29.80.006.330.000.121.430.021.570.98

Si4.72

29.60.016.600.000.181.460.001.421.05

(cont)

USW G-3

2577

Tcb

68.10.03

12.60.000.273.280.001.711.74

87.7

Based on 7229.70.016.490.000.181.530.001.450.97

/(Al+Fe)4.49 4.57

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.11 1.15

Mo1% Exchangeab'23.938.337.8

25.634.539.9

1.11

le Cations23.535.141.4

2577

Tcb

70.80.01

12.70.000.223.280.111.561.94

90.6

(0)29.9

0.006.300.000.141.480.021.281.04

4.74

1.12

26.532.441.1

2577

Tcb

69.80.02

12.80.020.253.050.591.561.97

90.0

29.80.016.410.010.161.390.101.291.07

4.64

1.13

27.433.039.7

2577

Tcb

66.30.03

12.90.030.203.510.051.691.84

86.6

29.40.016.750.010.131.670.011.451.04

4.35

1.11

24.233.841.9

92

DeDth(ft)Unita

SiO2TT02A1203Fe203MgOCaOBaONa2OK20Total

SiTiMFeMqCaBaNaK

KNaCa+Mg

2577

Tcb

68.30.00

12.90.000.243.270.001.702.10

88.5

29.60.006.610.000.151.520.001.431.16

4.47

1.11

27.233.539.3

2577

Tcb

68.80.02

12.70.000.223.190.051.532.18

88.6

APPENDIX F

Dril l Hole

2615

Tcb

63.90.00

11.70.000.001.570.002.882.71

82.8

2615

Tcb

62.90.00

11.30.000.001.530.002.912.97

81.6

Unit-Cell Composition29.70.016.450.000.141.480.011.281.20

4.61

1.12

29.331.239.5

29.70.006.430.000.000.780.002.601.61

4.62

29.80.006.310.000.000.780.002.671.79

(cont)

USW G-3

2656

Tct

67.70.02

11.90.010.001.820.002.073.45

86.9

Based on 7230.00.016.210.000.000.860.001.781.95

Si/(A1+Fe)4.71 4.82

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.11 1,05 1.14

Mol% Exchangeable Cations32.252.115.7

34.251.014.8

42.538.718.8

2656

Tct

67.70.02

12.60.120.001.860.002.483.46

88.2

(0)29.60.016.510.040.000.870.002.111.93

4.52

1.13

39.442.917.8

2695

Tct

65.80.01

12.00.360.001.980.002.543.19

85.9

29.60.006.360.120.000.960.002.221.83

4.57

1.09

36.644.319.1

3226

Tct

66.70.00

12.10.290.041.960.002.432.88

86.4

29.80.006.340.100.030.940.002.101.64

4.62

1.14

34.844.720.5

93

APPENDIX F (cont)

D r i l l Hole USW G-3

Depth(ft) .Unitd

SiO2TiO2A1203Fe2O3MgOCaOBaONa20K2O

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

3226

Tct

65.80.00

12.10,680.031.910.002.782.93

86.3

29.50.006.430.230.020.920.002.421.68

4.44

1.11

33.348.018.6

3475

Tct

66.90.07

12.30.070.301.190.072.893.57

87.3

3589

Tct

65.10.00

11.40.510.120.790.192.235.55

85.9

3589

Tct

67.00.00

11.40.260.000.880.132.204.47

86.3

Unit-Cell Composition29.60.026.420.020.200.570.012.482.02

4.60

1.06

38.347.214.5

29.70.006.120.180.080.390.031.973.23

4.72

30.10.006.020.090.000.420.021.912.56

3589

Tct

64.70.00

12.20.000.001.190.102.424.38

85.0

Based on 7229.60.006.570.000.000.580.022.152.56

Si/(Al+Fe)4.93 4.50

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.14

Mol% Exchangeable57.034.8

8.2

52.339.1

8.6

1.11

Cations48.440.611.0

3672

Tct

64.80.00

12.30.000.001.120.132.803.85

84.9

(0)29.60.006.600.000.000.550.022.482.24

4.49

1.12

42.647.010.4

3672

Tct

64.40.00

11.80.220.041.070.002.983.93

84.5

29.60.006.410.080.030.530.002.662.30

4.56

1.07

41.848.210.1

3672

Tct

64.70.00

12.70.000.021.090.322.814.46

86.1

29.30.006.800.000.010.530.062.472.58

4.32

1.09

46.144.2

9.7

94

Depth(ft)Uni ta

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiATFeMgCaBaNaK

KNaCa+Mg

3672

Tct

65.70.00

12.50.040.070.960.232.635.61

87.8

29.40.006.600.010.050.460.042.283.20

4.44

1.01

53.538.1

8.5

3672

Tct

66.90.00

11.80.070.001.120.012.424,36

86.7

Uni29.90.006.210.020.000.540.002.102.49

4.80

1.10

48.641.010.5

APPENDIX F

Dri'

3672

Tct

67.20.00

12.50.000.001.040.912.275.02

89.0

11 Hole

3759

Tct

67.30.00

12.50.000.001.180.393.223.33

87.8

t-Cell Composition29.60.006.510.000.000.490.161.942.82

4.55

29.70.006.480.000.000.560.072.751.87

(cont)

USW G-3

3759

Tct

65.30.00

12.20.020.001.050.002.963.99

85.5

Based on 7229.60.006.530.010.000.510.002.602.31

Si/(A1+Fe)4.58 4.53

(A1+Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.10

Mo1% Exchangeabi53.736.9

9.3

36.153.110.8

1.10

le Cations42.648.0

9.4

3759

Tct

66.80.00

12.20.080.001.090.003.693.20

87.0

(0)29.70.006.370.030.000.520.003.181.81

4.64

1.06

32.957.7

9.4

4423

Tlr

65.30.00

12.90.000.402.430.303.190.59

85.1

29.30.006.840.000.271.170.052.780.34

4.29

1.12

7.461.031.6

4423

Tlr

65.30.00

12.60.120.222.350.273.211.15

85.2

29.40.006.700.040.151.130.052.800.66

4.36

1.10

13.959.127.0

95

APPENDIX F (cont)

D r i l l Hole USW G-4

DeDth( f t ) a

Uni t a

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

1432

Tht

6 7 . 10.00

12.20.000.021.530.182.345.42

88.8

29.60.006.350.000.010.720.032.003.05

4.66

0.96

52.734.612.7

1432

Tht

67.40.00

12.40.000.001.391.032.424.93

89.5

Uni29.60.006.400.000.000.650.182.062.76

4.62

0.99

50.437.611.9

1470

Tht

68.40.00

11.80.000.000.840.002.505.43

88.9

1470

Tht

66.00.00

12.30.000.000.980.002.155.41

86.8

t-Cell Composition30,00.006.080.000.000.390.002.123.03

4.92

29.60.006.510.000.000.470.001.873.10

1470

Tht

67.10.00

12.40.000.001.060.002.555.54

88.6

Based on29.60.006.450.000.000.500.002.183.12

Si/(A1+Fe)4.56 4.58

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K1.02 1.10

Mol% Exchangeable54.738.2

7.1

56.934.48.7

1.02

Cations53.837.68.6

1470

Tht

67.80.00

12.00.000.000.890.002.355.68

88.7

72 (0)29.80.006.230.000.000.420.002.013.19

4.78

)1.03

56.835.7

7.5

1470

Tht

67.40.00

11.80.000.000.870.082.135.03

87.3

30.00.006.160.000.000.410.011.842.85

4.87

1.11

55.936.08.1

1470

Tht

67.10.00

12.40.000.001.080.002.244.97

87.8

29.70.006.490.000.000.510.001.922.81

4.58

1.13

53.536.79.8

96

APPENDIX F ( con t )

D r i l l Hole USW G-4

Depth( f t )Un i t a

SiO2TiO2A1203Fe203MgOCaOBaCNa2OK20

Total

SiTiAlFeMqCaBaNaK

1544

Tht

64.10.00

12.70.050.000.940.092.885.36

86.1

29.20.006.810.020.000.460.022.553.12

4.28

1544

Tht

66.00.00

12.80.110.001.090.063.015.26

88.3

Uni29.30.006.700.040.000.520.012.592.98

4.35

1544

Tilt

65.5O..01

12.50.130.020.950.113.085.45

87.8

1544

Tht

64.50.02

12.00.090.000.790.053.105.6G

86.3

t-Cel l Composition29.3

0.006.620.040.010.460.022.673.11

4.40

29.40.016.460.030.000.390.012.743.29

1544

Tht

68.90.02

13.00.120.020.810.103.255.62

91.8

Based on29.40.016.530.040.010.370.022.693.06

Si/(A1+Fe)4.53 4.48

1707

Tht

67.30.00

12.80.000.010.940.022.675.45

89.2

72 (0)29.50.006.610.000.010.440.002.273.04

4.46

1707

Tht

55.90.00

13.10.030.051.090.102.675.72

88.6

29.20.006.830.010.030.520.022.293.23

4.27

1707

Tht

67.20.00

12.30.000.020.930.052.616.28

89.4

29.60.006.380.000.010.440.012.223.52

4.64

1.03 1.02:Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

0.99 0.95 1.00 1.06

KNaCa+Mg

5041

7

.9

.6

.5

4842

8

.9

.6

.5

Mol% Exchangeable Cations49.8 51.3 49.9 52.942.7 42.7 43.9 39.47.5 6.0 6.2 7.8

1.03 0.96

5337

9

.2

.7

.1

56357

.8

.9

.3

97

APPENDIX F (cont)

D r i l l Hole USW G-4

DeDth(ft)Unita

SiO2TiO2AT 203Fe203MgOCaOBaONa20K20

Total

1707

Tht

64.40.00

12.70.000.050.840.051.916.59

86.6 90.0

1762

Tcp

69.30.00

12.90.000.071.740.003.463.86

91.3

1762

Tcp

68.00.00

13.00.000.091.600.002.713.67

89.0

1762

Tcp

68.80.00

13.40.000.081.650.213.173.87

91.2 91.8

1762

Tcp

67.00.01

13.40.050.121.790.163.453.77

89.7

1762

Tcp

67.30.02

13.00.000.151.650.183.193.90

89.4

SiTiAlFeMgCaBaNaK

29.30.006.830.000.030.410.011.683.82

4.29

Un i t -Ce l l Composition Based on 72 (0)29.60.006.460.000.040.490.012.043.20

4.58

29.50.006.470.000.040.790.002.862.10

4.56

29.50.006.650.000.060.750.002.282.03

Si/(A1+Fe)4.44

29.40.006.720.000.050.750.042.622.11

4.37

29.40.006.620.010.060.780.022.732.02

4.43

29.10.006.850.020.080.830.032.912.09

4.24

29.30.016.670.000.100.770.032.702.17

4.39

1.07 1.02(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

0.98 1.12 1.05 1.03 1.00 1.00

KNaCa+Mg

64287

.3

.3

.4

55359

.5

.3

.1

Mol% Exchangeable Cations36.2 39.7 38.1 36.149.3 44.6 47.4 48.914.5 15.7 14.5 15.0

354915

.4

.2

.4

374715

.8

.0

.1

98

Depth(ft)Unita

SiO2TiO2AT 203Fe203MgOCaOBaONa20K20

1762

Tcp

66.00.02

13.20.040.091.700.243.084.29

2132

Tcp

64.50.00

11.80.000.053.450.111.022.14

APPENDIX F

Dril l Hole

2132

Tcp

65.50.00

11.70.000.043.440.000.932.36

2132

Tcp

65.00.00

11.10.070.063.500.001.352.21

(contj

USW G-4

2132

Tcp

65.60.00

12.10.040.053.420.161.072.31

2132

Tcp

65.10.00

11.80.000.053.580.030.922.30

2132

Tcp

65.10.00

12.30.010.033.590.001.181.69

2132

Tcp

66.30.00

11.60.000.033.630.001.111.98

Total 88.7 83.0 84.0 83.2 84.8 83.8 84.0 84.7

Unit-Cell Composition Based on 72 (0)SiTiAlFeMgCaBaNaK

KNaCa+Mg

2 9 . 10.016.880.010.060.800.042.632.41

4.22

1.01

40.844.614.6

29.80.006.400.000.031.710.020.911.26

4.65

1.12

32.223.344.5

29.90.006.280.000.031.680.000.821.37

4.76

30.00.006.010.020.041.730.001.211.30

Si/(A1+Fe)4.97

29.70.006.470.010.031.660.030.941.33

4.58

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.12 1.00

Mol% Exchangeable35.221.143.8

30.428.241.4

1.13

Cations33.623.742.7

29.80.006.380.000.031.750.010.821.34

4.67

1.11

34.020.745.3

29.60.006.620.000.021.750.001.040.98

4.48

1.19

25.927.446.7

29.90.006.200.000.021.760.000.971.14

4.82

1.09

29.325.045.7

99

APPENDIX F (cont)

D r i l l Hole USW G-4

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

2132

Tcp

65.10.00

11.10.040.043.590.000.971.93

82.8

30.00.006.050.010.031.770.000.87i.1.4

4.95

2132

Tcp

65.40.00

12.00.010.023.480.001.182.05

84.2

Uni29.70.006.450.000.011.700.001.041.19

4.61

2132

Tcp

64.30.00

12.10.060.033.780.001.331.78

83.4

2227

Tcp

64.00.00

12.10.020.113.690.001.221.42

82.5

t-Cell Composition29*60.006.550.020.021.860.001.191.04

4.50

29.60.006.580.010.081.830.001.090.84

2227

Tcp

65.80.00

12.40.000.143.92O.OO0.84.1.62

84.6

Based on29.70.006.570.000.091.890.000.730.93

Si/(A1+Fe)4.50 4.52

2227

Tcp

64.10.00

12.10.040.113.880.021.211.14

82.6

72 (0)29.60.006.590.010.081.920.001.080.67

4.49

2227

Tcp

64.70.00

12.20.020.194.020.001.151.67

84.0

29.50.006.570.010.131.960.001.020.97

4.49

2227

Tcp

65.80.00

12.30.030.103.510.001.381.85

84.9

29.70.006.510.010.071.700.001.211.06

4.55

1.08 1.14{Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.10 1.15 1.16 1.15

KNaCa+Mq

292247

.8

.8

.4

30.226.443.4

Mol% Exchangeable Cations25.4 21.8 ?5.5 17.928.8 28.5 20.1 28.945.8 49.6 54.4 53.2

1.06 1.13

232451

.8

.9

.3

262943

.4

.9

.7

100

APPENDIX F (cont)

D r i l l Hole USW G-4

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

2227

Tcp

65.50.00

11.70.100.193.720.160.801.33

83.5

29.90.006.310.030.131.820.030.710.77

4.71

1.17

22.620.656.8

2227

Tcp

67.10.00

11.60.010.133.380.031.021.84

85.1

Uni30.10.006.130.000.091.620.010.891.05

4.90

1.14

28.824.346.9

2239

Tcp

66.30.00

12.00.010.374.020.290.961.43

85.3

2239

Tcp

64.60.00

12.10.050.314.090.030.521.11

82.8

t-Cell Composition29.70.006.340.000.251.930.050.830.82

4.68

29.70.006.530.020.212.010.010.460.65

2239

Tcp

65.70.01

12.20.060.374.010.100.831.68

85.0

Based on29.60.006.490.020.251.940.020.730.97

Si/(A1+Fe)4.54 4.55

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K]1.04 1.17

Mol% Exchangeable21.421.856.9

19.513.966.6

1.07

i Cations24.918.756.4

2239

Tcp

66.90.02

12.10.120.453.890.060.391.49

85.5

72 (0)29.80.016.360.040.301.860.010.340.85

4.66

11.16

25.410.164.6

2239

Tcp

65.40.00

10.90.080.453.650.000.801.91

83.2

30.00.005.930.030.311.800.000.711.12

5.04

0.99

28.418.153.5

2239

Tcp

65.20.00

12.00.090.373.970.040.501.29

83.4

29.80.006.430.030.251.940.010.440.75

4.60

1.16

22.213.164.8

101

Depth( f t )A

Unit

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

2239

Tcp

66.60.00

11.90.070.373.590.000.631.71

84.9

29.90.006.320.020.251.730.000.550.98

4.71

2738

Tcb

65.90.00

11.80.000.294.320.040.800.91

84.1

APPENDIX F

D r i l l Hole 1

2738

Tcb

64.90.00

12.60.000.304.340.200.561.10

84.1

2738

Tcb

66.50.00

12.80.000.374.490.030.871.06

86.1

Uni t -Cel l Composition29.80.006.300.000.202.090.010.700.52

4.73

29.50.006.770.000.202.110.040.490.64

4.35

29.50.006.660.000.242.130.010.750.60

(cont)

USW G-4

2738

Tcb

65.80.00

12.40.020.244.260.000.831.02

84.5

Based on29.60.006.570.010.162.060.000.720.59

Si/(A1+Fe)4.43 4.50

2738

Tcb

64.90.00

11.60.000.264.140.141.101.80

84.0

72 (0)29.7

0.006.260.000.182.030.030.981.05

4.74

2738

Tcb

66.90.00

12.40.050.274.310.170.571.17

85.9

29.70.006.490.020.182.050.030.490.66

4.57

2738

Tcb

64.90.00

10.60.000.294.150.100.580.63

81.3

30.20.005.850.000.202.070.020.520.37

5.17

1.16 1.08!Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.16 1.09 1.15 0.96

KNaCa+Mg

281556

.0

.7

.4

142065

.9

.0

.1

Mol% Exchangeable Cations18.5 16.1 16.6 24.814.3 20.1 20.5 23.167.2 63.8 62.8 52.1

1.15 1.07

191465

.6

.5

.9

111671

.8

.5

.7

102

Depth(ft)Unita

SiO2Ti0?A1203Fe203MgOCaOBaONa2OK2O

APPENDIX

Drill Hoi

2738

Tct

65,

12,00.4001

.9rv»

.2

.09

.33

.48

.23

.49

.05

F (cont)

e USW G-4

2738

Tcb

66.70 .uu

12.70.060.384.400.130.821.23

2738

Tcb

64.2CUD12.00.040.334.180.150.591.12

Total 84.8 86.4 82.6

Unit-Cell Composition Based on 72(0)SiTiAlFeMgCaBaNaK

29.60.016.470.030.222.160.040.430.60

CSi4.56

29.50.006.640.020.252.080.020.700.69

/(Al+Fe)4.43

29.60.006.520.010.232.070.030.530.66

4.53

C(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.11 1.09 1.12

Mol% Exchangeable CationsK 17.7 18.6 18.9Na 12.5 18.8 15.2Ca+Mg 69.8 62.6 65.9

103

APPENDIX F (cont)

D r i l l Hole USW H-3

Depth( f t ) .Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mq

1800

Tcp

68.90.00

11.90.050.043.610.000.842.87

88.2

1800

Tcp

70.70.00

11.70.030.023.520.070.842.75

89.6

1800

Tco

64.50.00

11.50.040.023.190.000.853.13

83.2

1800

Tcp

58.50.009.60.110.012.850.000.662.45

74.2

Unit-Cell Composition Based on 7230.00.006.100.020.031.680.000.711.59

4.90

1.07

39.717.742.6

30.20.005.890.010.011.610.010.701.50

5.12

29.80.006.270.010.011.580.000.761.85

Si/(A1+Fe)4.75

30.20.005.850.040.011.580.000.661.61

5.13

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.08 1.08

Mol% Exchangeable39.318.242.5

43.918.137.9

1.08

Cations41.817.141.1

1800

Tcp

67.80.00

12.10.040.023.790.060.982.89

87.7

(0)29.80.006.260.010.011.780.010.831.62

4.74

1.03

38.119.642.3

104

Depth(ft)Unita

Si 02Ti02A1203Fe203MqOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

1420

Tht

63.00.009.20.030.082.710.000.582.75

78.3

30.70.005.290.010.061.420.000.551.71

5.80

1.02

45.814.739.5

1420

Tht

66.60.00

12.30.010.263.370.000.552.92

86.0

Uni29.70.006.470.000.171.610.000.481.66

4.59

1.13

42.412.145.5

APPENDIX F

Drill Hole

1420

Tht

67.40.00

12.20.000.253.200.000.663.10

86.8

1420

Tht

68.50.00

12.20.050,223.210.120.633.38

88.3

t -Cel l Compositior29.8

0.006.360.000.161.520.000.571.75

4.69

29.90.006.270.020.141.500.020.531.88

(cont)

USW H-4

1420

Tht

68.00.00

12.20.000.233.220.000.722.93

87.3

l Based on29.90.006.320.000.151.520.000.611.64

Si/(A1+Fe)4.75 4.73

(AT +Fe)/(2Mg+2Ca+2Ba+Na+K]1.12 1.10 1.13

Mo1% Exchangeable Cations43.814.242.1

46.413.140.5

41.915.642.5

1420

Tht

67.90.00

12.20.000.183.240.000.683.10

87.3

72 (0)29.9

0.006.320.00

,0.12•1.530.000.581.74

4.72

11.13

43.914.641.5

1455

Tht

62.60.00

11.20.080.613.280.000.531.82

80.1

29.80.006.290.030.431.670.000.491.11

4.72

1.09

29.913.256.9

1455

Tht

67.40.00

11.50.000.763.590.020.431.88

85.6

30.00.006.040.000.501.710.000.371.07

4.97

1.03

29.210.260.6

105

Depth(ft)Unit3

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiAlFeMgCaBaNaK

1455

Tht

640

11003001

83

2906001001

4

.5

.00

.9

.00

.76

.53

.00

.42

.88

.0

.7

.00

.45

.00

.52

.74

.00

.37

.10

.60

1455

Tht

660

12003001

84

2906001000

4

.4

.00

.2

.00

.77

.73

.03

.38

.40

.9

Uni.7.00.44.00.51.79.01.33.80

.62

APPENDIX F

D r i l l Hole

1550

Tht

65.50.00

12.20.000.002.200.001.545.08

87.5

1550

Tht

63.90.00

11.90.040.002.150.091.464.61

84.2

t-Cell Compositior29.60.006.410.000.001.050.001.332.89

4.62

29.60.006.490.010.001.070.021.312.72

(cont)

USW H-4

1550

Tht

57.90.00

12.20.030.002.260.001.793.31

77.5

\ Based on29.00.007.210.010.001.210.001.742.12

Si/(A1+Fe)4.54 4.02

1550

Tht

64.90.00

11.70.160.002.180.001.454.52

84.9

72 (0)29.70.006.310.060.001.070,001.292.64

4.66

1550

Tht

67.20.00

12.90.020.002.440.151.304.42

88.4

29.50.006.680.010.001.150.031.112.48

4.41

1550

Tht

68.80.00

12.90.000.002.250.151.324.54

90.0

29.70.006.550.000.001.040.031.102.50

4.52

1.08

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.12 1.01 1.05 1.15 1.05

KNaCa+Mg

291060

.5

.0

.5

239

67

.3

.6

.1

Mol% Exchangeable Cations54.8 53.4 41.7 52.825.3 25.7 34.3 25.819.9 20.9 23.9 21.4

1.13 1.14

522324

.3

.4

.3

532322

.8

.8

.4

106

APPENDIX F (cont)

Total 86.3

D r i l l Hole USW H-4

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

1980

Tcp

66.40.00

11.80.050.000.270.003.394.32

1980

Tcp

68.50.00

12.30.000.000.300.073.494.72

1980

Tcp

67.50.00

12.10.000.000.290.004.184.19

1980

Tcp

73.40.02

11.60.480.000.250.003.324.73

1980

Tcp

67.40.00

11.90.090.000.320.163.664.04

1980

Tcp

67.60.00

11.90.000.000.320.003.055.34

1980

Tcp

67.50.02

11.50.000.000.310.003.095.14

89.4 88.2 93.8 87.6 1.2 87.6

U n i t - C e l l Composi t ion Based on 72 (0)SiTiAlFeMqCaBaNaK

KNaCa+Mg

29.90.006.250.020.000.130.002.962.48

4.77

1.10

44.553.1

2.3

29.80.006.310.000.000.140.012.942.62

4.72

1.08

45.951.6

2.5

29.70.006.280.000.000.140.003.572.36

30.30.015.630.150.000.110.002.662.49

Si/(A1+Fe)4.73 5.25

29.90.006.220.030.000.150,033.152.28

4.78

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.08 1.08

Mol% Exchangeable Cat!ons38.858.9

2.3

47.450.5

2.1

40.?56.4

2.7

29.90.006.220.000.000.150.002.613.01

4.80

l.C'"-

52.145.2

2.6

30.00.016.040.000.000.150.002.662.91

4.96

1.03

50.946.5

2.6

107

APPENDIX F (cont)

D r i l l Hole USW H-5

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

1666

Tot

660

13004000

85

2906002000

4

.4

.00

.0

.01

.78

.39

.00

.43

.56

.6

.4

.00

.79

.00

.52

.08

.00

.37

.32

.33

1666

Tut

65.50.02

13.30.000.865.190.000.170.21

85.3

Uni29.20.015.980.000.572.480.000.150.12

4.18

1917

Tht

70,10.01

12.40.000.001.760.001.874.59

90.7

1917

Tht

69.60.00

12.80.000.001.570.042.034.95

91.0

t-Cell Composition29.9

0.006.240.000.000.800.001.552.50

4.79

29.70.006.440.000.000.720.011.682.70

1917

Tht

70.90.00

12.90.000.001.660.041.864.96

92.3

Based on29.3

0.006.390.000.000.750.011.522.66

Si/(A1+Fe)4.61 4.66

1917

Tht

66.50.00

12.80.000.001.730.002.075.45

88.6

72 (0)29.4

0.006.670.000.000.820.001.773.07

4.41

1917

Tht

670

12001015

89

2906000013

4

.1

.01

.7

.00

.00

.49

.22

.98

.56

.1

.5

.00

.58

.00

.00

.70

.04

.69

.12

.48

1917

Tht

61.30.00

10.80.000.001.590.031.703.84

79.3

29.90.006.210.000.000.83O.Oi1.612.39

4.81

1.15 1.10[Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.10 1.11 1.12 1.03 1.05 1.10

KNaCa+Mg

91179

.6

.2

.1

34

92

IX)

.4

.0

Mpl% Exchangeable Cations5TT5 52.9 54.0 54.231.9 33.0 30.8 31.316.6 14.1 15.2 14.5

563012

.6

.6

.7

493317

.5

.3

.2

108

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMqCaBaNaK

KNaCa+Mg

1917

Tht

6 1 . 10.00

10.10.000.001.560.001.513.80

78.1

30.20.005.890.000.000.830.001.452.40

5.13

1.07

51.331.017.7

1917

Tht

620

10001013

79

3005000012

5

1

493415

.1

.00

.5

.00

.00

.50

.00

.84

.95

.9

Uni.1.00.99.00.00.78.00.73.44

.02

.05

.3

.9

.7

APPENDIX F

Dril l Hole

1917

Tht

62.70.00

10.80.000.001.640.031.664.14

81.0

1917

Tht

63.70.00

10.70.000.001.610.181.614.25

82.1

t-Cell Compositior30.00.006.090.000.000.840.011.542.53

4.92

(Al+Fe)1.06

30.10.005.960.000.000.820.031.472.56

(cont)

USW H-5

1930

Tht

64.00.00

10.60.450.001.870.071.664.05

82.7

i Based on30.00.005.860.160.000.940.011.512.42

Si/(Al+Fe)5.05 4.99

/(2Mg+2Ca+2Ba+Na+Kl1.04

Moll Exchangeabl51.531.417.1

52.830.416.8

1.03

le Cations49.731.019.3

1930

Tht

67.40.00

12.10.000.002.050.001.714.14

87.4

72 (0)29.80.006.310.000.000.970.001.472.34

4.72

11.10

48.930.720.4

1930

Tht

67.30.00

12.10.000.002.180.001.444.24

87.3

29.80.006.320.000.001.040.001.242.40

4.72

1.11

51.326.522.2

1930

Tht

72.00.00

11.40.040.001.930.792.313.67

92.1

30.30.005.650.010.000.870.131.881.97

5.34

0.97

41.739.918.4

109

Depth( f t ) .Unita

SiO2TiO2AT 203Fe203MgOCaOBaONa20K20

Total

UniSiTiAlFeMgCaBaNaK

APPENDIX 1

D r i l l Hole

2200

Tcp

710

11001023

89

t - C e l l30

05000021

5

.3

.00

.0

.00

.04

.31

.01

.49.24

.4

2200

Tco

62.20.00

12.40.010.001.340.002.803.89

82.6

Composition.6.00.56.00.03.60.00.07.77

.50

29.30.006.880.000.000.680.002.562.34

Si/(4.25

• (cnnt)

USW H-5

2200

Tcp

68.80.00

11.00.000.001.550.002.223.63

87.2

Based on30.40.005.720.000.000.730.001.902.04

Al+Fe)5.31

2200

Tcp

71.40.00

12.40.000.001.620.232.204.53

92.4

72 (0)30.0

0.006.130.000.000.730.041.792.43

4.88

KNaCa+Mg

(AT +Fe)/(2Mg+2Ca+2Ba+Na+K)1.09 1.10 1.06 1.07

Mol% Exchangeable Cations39.7 42.0 43.7 49.146.3 45.9 40.6 36.214.0 12.1 15.7 14.7

110

APPENDIX F (cont)

D r i l l Hole UE-25a#l

Depth(ft)Unit

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCaBaMaK

1279

Tpt

550

14032000

77

2708021000

3

7• /

.00

.1

.82

.30

.10

.00

.62

.85

.4

.6

.00

.22

.31

.43

.11

.00

.59

.54

.23

1323

Tot

65.80.00

11.40.000.743.870.000.501.75

84.1

1323

Tpt

68.90.00

12.00.020.623.800.130.552.02

88.1

1323

Tpt

69.00.00

12.30.080.603.850.000.521.81

88.1

Unit-Cell Composition29.90.006.090.000.501.880.000.441.01

4.91

29.90.006.140.010.401.770.020.451.12

4.87

29.80.006.250.030.391.790.000.441.00

1323

Tpt

68.70.00

12.00.020.573.920.000,561.76

87.6

Based on29.90.006.170.010.371.830.000.470.98

S1/(A1+Fe)4.76 4.84

1323

Tpt

68.70.02

12.30.040.534.200.060.561.43

87.8

72 (0)29.80.016.280.010.341.950.010.470.79

4.74

1323

Tpt

660

11.004001

84

2906001001

4

.1

.03

.6

.02

.38

.01

.15

.67

.78

.7

.8

.01

.20

.01

.26

.94

.03

.59

.03

.81

1323

Tpt

660

12003001

85

2906001001

4

.4

.03

.0

.02

.67

.92

.20

.60

.80

.6

.7

.01

.30

.01

.45

.88

.04

.52

.03

.71

1.04 0.98

KMaCa+Mg

111275

.5

.7

.8

261162

.4

.5

.1

Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.03 1.09 1.06 1.07

Mol% Exchangeable Cations29.8 27.7 26.8 22.212.3 12.1 13.0 13.257.8 60.2 60.3 64.5

1.02 1.01

261557

.9

.4

.7

261360

.5

.4

.0

111

APPENDIX F (cont)

D r i l l Hole UE-25a#l

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

1358

Tpt

67.70.00

11.20.030.313.710.070.571.79

85.4

30.20.005.910.010.211.770.010.491.02

5.10

1358

Tpt

63.80.00

10.30.230.223.070.030.562.05

80.2

1358

Tpt

66.70.00

11.20.000.303.800.100.351.78

84.2

1381

Tht

67.00.03

11.90.000.693.740.090.481.83

85.7

Unit-Cell Composition30.30.005.740.080.161.560.010.521.24

5.20

30.20.005.980.000.201.840.020.311.03

5.04

29.80.015.220.000.461.780.020.411.04

1384

Tht

65.90.02

11.80.000.683.500.120.602.23

84.8

Based on29.70.016.270.000.461.690.020.531.28

Si/(A1+Fe)4.79 4.74

1384

Tht

66.50.02

11.60.000.753.730.000.511.86

85.0

72 (0)29.90.016.130.000.501.800.000.441.07

4.88

1384

Tht

65.40.00

11 .70.000.684.090.080.49i r-r>t ,ZK\

84.0

29.70.006.250.000.461.990.010.430.92

4.76

1384

Tht

67.60.04

10.90.000.623.960.000.501.65

85.2

30.20.015.730.000.411.900.000.430.94

5.27

1.08 1.12(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.10 1.04 1.02 1.00

KNaCa+Mg

291456

.2

.1

.7

351449

.7

.8

.4

Mo1% Exchangeable Cations30.4 28.1 32.4 28.09.1 11.2 13.3 11.7

60.5 60.7 54.3 60.3

0.99 0.96

241164

1• 1

.4

.5

251162

.5

.8

.7

112

Depth(ft)Unita

SiO2T102A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiAlFeMgCaBaNaK

KNa -Ca+Mg

1384

Tht

bo0

110040

• 0

1

86

3005001000

5

0

2411S3

.0

.02

.5

.00

.66

.02

.14

.48

.61

.4

.0

.01

.96

.00

.43

.90

.02

.41

.91

.03

.99

.8

.2

.9

1465

650,

11002004

84

3006001002

4

1

561032

i t

.4

.00

.1

.37

.00

.76

.04

.50

.05

.3

Uni.0.00.02.13.00.36.01.44.37

.88

.11

'.8.7.5

APPENDIX F 1Icont)

D r i l l Hole (JE~25a#l

1465

Tht

68.50.00

11.30.010.003.660.010.672.14

86.3

1505

Tht

65.60.00

11.40.040.003.460.140.783.07

84.5

t-Cell Composition30.30.005.900.000.001.730.000.571.21

5.12

(Al+Fe)/1.12

29.90.006.140.010.001.690.030.691.79

1584

Tht

66.70.00

11.90.040.003.920.010.922.25

85.8

Based on29.80.006.300.010.001.880.000.801.28

Si/(A1+Fe)4.86 4.72

r(2Mg+2Ca+2Ba+Na+K)1.04 1.08

Mol% Exchangeable Cations34.316.349.3

42.916.640.6

32.420.147.4

1584

Tht

66.20.00

12.20.010.003.820.000.832.78

85.8

72 (0)29.70.006.450.000.001.840.000.721.59

4.60

1.08

38.317.444.3

1584

Tht

660

12004002

85

2906001001

4

1

351054

.5

.00

.1

.00

.00

.13

.07

.42

.30

.4

.8

.00

.37

.00

.00

.98

.01

.37

.32

.67

.12

.9

.0

.1

1667

Tht

660

12003003

87

2906001001

4

1

401841

.7

.03

.8

.03

.00

.71

.00

.91

.01

.2

.5

.01

.65

.01

.00

.76

.00

.78

.70

.43

.11

.1

.4

.5

113

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K2O

Total

SiTiATFeMgCaBaNaK

1667

Tht

66.70.05

12.10.020.013.610.000.792.79

86.0

29.80.026.360.010.011.730.000.681.59

4.68

1667

Tht

66.50.00

12.70.040.033.710.001.013.30

87.3

APPENDIX F I

Dril

1667

Tht

63.50.01

12.60.030.023.660.001.053.60

84.5

(cont)

1 Hole UE-25a#l

1667

Tht

65.10.04

13.10.010.033.980.070.943.29

86.5

Unit-Cell Composition29.50.006.620.010.021.760.000.871.86

4.44

29.20.006.850.010.011.800.000.942.11

4.26

29.20.016.900.000.021.910.010.821.88

1667

Tht

65.80.05

12.60.060.033.970.000.803.01

86.3

Based on29.40.026.650.020.021.900.000.691.72

Si/(A1+Fe)4.22. 4.41

1667

Tht

65.50.02

12.60.050.013.630.050.893.40

86.2

72 (0)29.40.016.680.020.011.750.010.771.95

4.40

1667

Tht

63.60.00

12.10.030.043.540.060.822.96

83.1

29.50.006.590.010.031.760.010.741.75

4.47

1667

Tht

65.40.02

12.40.050.013.860.001.053.30

86.1

29.40.016.570.020.011.860.000.921.89

4.47

1.11 1.05(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)

1.03 1.05 1.07 1.07

KNaCa+Mq

391743

.7

.1

.3

411939

.3

.2

.5

Mol% Exchangeable Cations43.4 40.6 39.6 43.519.2 17.6 16.0 17.337.3 41.7 44.4 39.2

1.08 1.01

411741

.0

.2

.8

401939

.5

.6

.9

114

Death(ft)Unita

Si 02Ti02AT 203Fe203MgOCaOBaONa20K20

Total

1667

Tht

66.60.05

12.60.060.033.970.000.803.01

87.2

1667

Tht

APPENDIX F (cont)

D r i l l Hole UE-25a#l

90.4

1667

Tht

67.10.00

12.60.060.023.840.321.022.92

87.8

1824

Tht

62.50.00

12.60.050.084.780.000.621.00

81.6

1824

Tht

66.10.00

13.9G .030.155.430.21

1333

1824

Tht

68.80.00

13.40.02

1412

88.3

0.190.991.44

90.2

1824

Tht

66.80.02

13.60.000.154.960.021.221.29

88.1

2087

Tcp

65.30.00

11.60.000.523.930,000.261.40

83.0

SiTiATFeMgCaBaNaK

29.50.026.590.020.021.880.000.691.70

4.46

U n i t - C e l l Composit ion Based on 72 (0)29.50.006.680.030.031.840.010.731.53

4.39

29.50.006.520.020.011.810.060.871.64

4.51

29.30.006.940.020.062.400.000.560.60

Si/(A1+Fe)4.20

28.90.007.170.010.102.540.040.960.74

4.02

29.30.006.730.010.092.340.030.820.78

4.35

29.10.016.980.000.102.310.001.030.72

4.17

29.90.006.280.000.351.930.000.230.82

4.76

1.07 1.12(AT +Fe)/(2Mg+2Ca+2Ba+Na+K)

1.04 1.15 1.02 1.03 1.06 1.12

KNaCa+Mg

391644

.6

.0

.4

371745

.1

.8

.1

MoU37.20.42.

811

Exchangeable16.515.667.9

Cations17,22,60,

.1

.1

.8

192060

.4

.3

.3

172458

.2

.8

.0

24668

.5

.9

.5

115

Depth(ft) .Unita

SiO2TiO2Al 20viFe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mq

2087

Tcp

64 .10.00

12.00.000.71

. 3.780.050.471.54

82.7

29.60.006.520.000.491.870.010.420.91

4.54

1.08

24.611.464.0

2087

Tcp

60.80.00

12.00.050.713.920.180.591.49

79.7

Uni29.20.006.800.020.512.020.030.550.91

.4.29

1.03

22.913.863.3

APPENDIX F

Dr1"

2087

Tcp

66.30.00

12.00.050.683.940.050.361.29

84.7

(cont)

11 Hole UE-25a#l

2087

Tcp

63.50.02

12.40.020.604.090.190.702.14

83.6

t-Cei l Compositior29.80.006.370.020.461.900.010.310.74

4.66

29.20.016.720.010.412.020.030.631.26

2113

Tcp

75.10.00

11.40.290.000.870.003.114.59

95.4

i Based on3.40.000.610.010.000.040.000.270.26

Si/(A1+Fe)4.34 5.50

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K!1.11 0.99

Mol% Exrhangeabi21.7

9.269.1

29.214.556.3

0.99

le Cations45.747.0

7.3

2220

Tcp

64.80.00

11.50.000.603.700.000.411.48

82.5

72 (0)29.90.006.250.000.411.830.000.370.87

4.78

!1.09

25.010.564.4

2220

Tcp

65.40.00

11.70.000.613.760.000.331.33

83.2

29.90.006.290.000.421.840.000.290.78

4.75

1.13

23.38.8

67.9

2220

Tcp

65.00.00

11.60.000.543.870.000.351.25

82.6

29.90.006.290.000.371.910.000.310.73

4.75

1.12

22.19.4

68.5

116

APPENDIX F (cont)

D r i l l Hole UE-25a#l

Depth(ft)Uni t a

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

2220

Tcp

66.00.00

11.80.000.563.790.000.341.33

83.8

29.90.006.290.000.381.840.000.300.77

4.76

1.14

2220

Tcp

64.20.00

12.10.020.64

.87

.003.0.0.311.48

82.6

2220

Tcp

63.30.00

11.50.030.553.780.000.361.40

81.0

2220

Tcp

62.20.00

11.40.060.553.720.02b.351.39

79,6

2220

Tcp

63.40.00

11.40.000.563.800.070.521.42

81.2

2304

Tcp

86.5

Uni t -Ce l l Composition Based on 72 (0)29.60.006.600.010.441.910.000.280.87

4.48

29.80.006.370.010.391.900.000.330.84

29.70.006.400.020.391.910.000.320.85

29.8o.oo-6.330.000.391.910.010.470.85

Si/(A1+Fe)4.63 4.70

KNaCa+Mg

239

67

.4

.1

.5

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.13 1.11 1.11 1.06

Mol% Exchangeable Cations24.9 24.3 24.4 23.47,9 9.5 9.4 13.0

67.2 66.2 66.2 63.5

29.90.006.170.000.091.98G.G30.810.84

4.84

1.05

22.621.755.7

2304

Tcp

86.4

29.80.006.360.000.101.960.020.760.82

4.68

1.11

22.420.956.6

2304

Tcp

85.8

30.00.015.950.020.152.000.000.850.95

5.03

0,98

24.121.654.3

117

Depth(ft)Unit

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiAlFeMgCaBaNaK

2304

Tcp

67.40.00

11.70.030.164.460.020.991.37

86.2

29.90.006.130.010.112.120.000.850.77

4.87

2304

Tcp

64.20.02

11.90.000.194.240.070.761.60

83.0

Uni29.60.016.470.000.132.090.010.680.94

4.57

APPENDIX F

Drill

2304

Tcp

67.00.00

12.10.010.194.310.000.771.62

86.9

(cont)

Hole UE-25a#l

2304

Tcp

64.90.01

12.10.030.214.260.000.891.69

84.1

t-Cell Composition29.80.006.240.000.122.030.000.660.91

Si4.78

29.60.006.510.010.142.080.000.790.98

2304

Tcp

64.10.01

12.10.000.154.070.000.781.55

82.7

Based on 7229.60.006.580.000.102.020.000.700.91

/(Al+Fe)4.53 4.50

2304

Tcp

66.40.02

12.50.020.174.250.030.731.64

85.7

(0)29.60.016.570.010.112.030.010.630.93

4.50

2304

Tcp

68.80.01

11.90.070.154.190.001.081.60

87.8

29.90.006.130.020.101.950.000.910.89

4.86

2304

Tcp

68.10.03

12.10.040.174.310.000.891.60

87.3

29.80.016.260.010.112.020.000.750.89

4.75

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.06 1.06 1.05 1.13 1.12 i.O4 1.06

KNaCa+Mg

202257

.1

.1

.8

241757

.5

.7

.9

Mol%241757

Exchangeable.4.6.9

24.619.755.7

Cations24.518.756.8

251757

.2

.0

.8

232353

.1

.7

.3

232056

.6

.0

.4

118

APPENDIX F (cont)

D r i l l Hole UE-25b#l(H)

Depth( f t ) .Unit

Si 02TiO2A1203Fe203MgOCaOBaONa20K20Total

SiTiAlFeMgCaBaNaK

2832

Tcb

580

1600500i1

82

2709

.1

.00

.5

.00

.69

.79

.00

.59

.01

.7

.2

.00

.110.0002000

2

.48

.90

.00

.54

.60

,99

2832

Tcb

58.30.00

16.20.000.825.930.000.701.33

33.3

2832

Tcb

580

15005001

82

Unit-Cell27.20.008.910.000.572.960.000.630.79

3.05

2708002000

3

.2

.00

.8

.00

.86

.79

.03

.76

.29

.7

2832

Tcb

58.20.00

15.80.000.845.860.000.671.26

82.6

2832

Tcb

59.90.00

16.50.000.916.060.000.231.41

85.0

Composition Based on.3.00.74.00.60.91.01.69.77

.12

27.30.008.750.000.592.950.000.610.75

27.30.008.870.000.622.960.000.200.82

Si/(A1+Fe)3.12 3.08

2832

Tcb

58.30.00

16.20.000.915.910.000.361.38

83.1

72 (0)27.20.008.920.000.632.960.000.330.82

3.05

2832

Tcb

59.00.00

16.00.000.865.700.110.741.36

83.8

27.40.008.740.000.592.830.020.670.80

3.13

2832

Tcb

580

16005001

82

2708002000

3

.2

.00

.2

.05

.86

.75

.08

.72

.08

.9

.2

.00

.93

.02

.60

.88

.01

.65

.64

.04

1.15(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)

1.05 1.03 1.04 1.08 1.07 1.05 1.08

KNaCa+Mg

131174

.3

.8

.8

161271

.0

.8

.3

MoU151370

Exchangeable.5.9.6

15,12,72,

.4

.4

.2

174

77

.8

.4

.8

176

75

.4

.9

.8

161370

.4

.6

.0

131372

.5

.7

.8

119

Depth( f t ) .Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

2832

Tcb

55.50.00

16.20.000.625.950.150.861.28

80.5

26.90.009.240.000.453.090.030.810.79

2.91

2832

Tcb

57.00.03

16.30.040.675.880.210.591.32

82.1

Uni27.00.019.130.010.472.990.040.540.80

2.96

APPENDIX F

Dril l

2832

Tcb

57.80.04

15.10.020.865.920.070.351.30

81.5

(cont)

Hole UE-25b#l(H)

2832

Tcb

55.80.00

15.10.050.815.740.170.491.29

79.5

t-Cell Composition27.50.018.470.010.613.020.010.320.79

3.25

27.30.008.730.020.593.010.030.460.81

2832

Tcb

56.70.00

15.00.020.795.730.190.501.37

80.3

Based on 7227.50.008.560.010.572.970.040.470.85

Si/(A1+Fe)3.12 3.21

2879

Tcb

55.10.00

16.30.000.676.070.000.241.54

79.9

(0)26.80.009.370.000.493.170.000.230.96

2.87

2879

Tcb

56.50.00

16.50.000.456.300.000.511.49

81.7

26.90.009.270.000.323.220.000.470.91

2.90

2879

Tcb

54.80.00

17.00.000.346.310.060.661.55

80.8

26.50.009.730.000.253.270.010.620.96

2.73

1.06

KNaCa+Mg

151568

.4

.7

.9

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.10 1.01 1.03 1.01

Mol% Exchangeable Cat ions16.6 16.6 16.5 17.411.3 6.8 9.5 9.772.1 76.5 73.9 72.9

1.10 1.10 1.13

194

75

.8

.7

.5

189

72

.4

.6

.0

181269

.8

.2

.1

120

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaOMa20K20

2879

Tcb

55.90.00

16.40.000.416.500.000.951.47

APPENDIX F

Dril l

2879

Tcb

56.10.00

16.40.000.436.370.020.461.50

(cont)

Hole UE-25b#l(H)

2879

Tcb

56.50.00

16.90.000.336,660.100.571.49

2879

Tcb

56.10.00

16.90.050.226.770.210.891.43

2879

Tcb

58.00.00

16.90.070.276.590.140.861.53

2879

Tcb

56.10.00

17.60.030.226.960.250.631.60

Total 81.7 81.3 82.6 82.6 84.3 83.4

Uni t -Cel l Composition Based on 72 (0)SiTiAlFeMgCaBaNaK

KNaCa+Mg

26.80.009.270.000.293.340.000.880.90

2.89

1.03

16.616.367.1

26.90.009.290.000.313.280.000.430.92

2.90

(Al+Fe)1.09

26.70.009.440.000.233.380.020.520.90

26.70.009.440.020.163.450.040.820.87

Si/(A1+Fe)2.83 2.82

26.90.009.250.020.193.270.030.770.91

2.90

/(2Mg+2Ca+2Ba+Na+iO1.09 1.05

Mol% Exchangeable Cations18.68.7

72.7

17.910.471.7

16.415.568.1

1.07

17.615.067.3

26.40.009.790.010.153.510.050.580.96

2.69

1.09

18.511.170.5

121

Depth

U n i t 3

SiO2TiO2A1203Fe203MgOCaOBaONa2OK2O

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

1250

Tht

67 .80.02

12.80.000.073.730.111.082.54

88.1

29.60.016.560.000.051.740.020.911.41

4.51

1.10

34.322.243.5

1250

Tht

65.90.00

12.40.010.073.580.071.012.60

85.7

Uni29.60.006.590.000.051.720.010.881.49

4.49

1.11

36.021.242.8

APPENDIX K (

Dri l l

1250

Tht

67.80.00

12.40,060.073.760.020.962.48

87.6

cont)

Hole UE-25p#l

1250

Tht

69.20.00

12.40.050.053.660.061.002.62

89.1

t-Cell Composition29.70.006.400.020.051.770.000.821.39

29.80.006.310.020.031.690.010.841.44

1250

Tht

69.50.00

13.00.040.073.610.071.393.09

90.7

Based on29.60.006.510.010.041.650.011.151.68

Si/(A1+Fe)4.63

(Al+Fe)/C1.10

4.72 4.53

2Mg+2Ca+2Ba+Na+Kl1.10

Mol% Exchangeabl34.520.345.1

36.020.943.1

1.05

e Cations37.225.437.4

1250

Tht

68.60.00

12.40.000.073.590.001.133.01

88.8

72 (0)29.70.006.350.000.051.670.000.951.66

4.68

11.05

38.521.939.6

1250

Tht

69.80.00

12.50.020.063.640.021.403.03

90.5

29.70.006.290.010.041.660.001.161.65

4.72

1.01

36.625.737.7

1250

Tht

69.20.00

12.40.030.063.570.001.052.67

89.0

29.80.006.300.010.041.650.000.881.47

4.73

1.10

36.421.841.8

122

APPENDIX F (cont)

D r i l l Hole UE-25p#l

Depth(ft)Unita

Si 02Ti02A1203Fe203MgOCaO .BaONa20K20

Tota l

1250

Tht

68.90.00

12.40.000.013.470.041.102.62

88.6

1350

Tht

69.20.00

12.20.000.083.760.001.112.38

88.7

1350

Tht

68.70.00

12.50.020.083.870.090.872.27

88.4

1350

Tht

68.30.03

11.90.00

1158

0.130.692.42

87.2 86.8

1400

Tht

66.50.00

12.90.000.084.080.141.431.52

86.6

1400

Tht

67.40.00

12.20.000.053.800.121.161.94

86.7

1700

Tcp

84.5

SiT1AlFeMgCaBaNaK

29.80.006.330.000.011.610.010.921.45

4.71

1.13

U n i t - C e l l Composi t ion Based on 72 (0)29.9

0.006.200.000.051.740.000.931.31

4.82

1.06

29.80.006.380.010.051.800.020.731.25

4.67

(Al+Fe),1.12

30.00.016.130.000.071.680.020.591.36

Si/(A1+Fe)4.89

29.20.007.040.000.052.080.031.050.78

4.15

2Mg+2Ca+2Ba+Na+K)1.12 1.14

29.40.006.730.G00.051.940.021.230.86

4.37

1.10

29.80.006.370.000.031.800.020.991.09

4.67

1.10

29.40.006.720.010.161.900.011.170.82

4.37

1.10

Mol% Exchangeable CationsK 36.3 32.5 32.7 36.6 19.8Na 23.2 23 .1 19.1 15.9 26.6Ca+Mg 40.5 44.4 48.2 47.5 53.6

213048

.1

.1

.8

272546

.9

.4

.7

202850

.3

.9

.9

123

APPENDIX F (cont)

D r i l l Hole UE-25p#l

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mq

1700

Tcp

680

13004011

88

2906001010

4

1

162854

.0

.00

.0

.00

.22

.19

.11

.32

.18

.0

.5

.00

.65

.00

.14

.95

.02

.11

.65

.44

.11

.9

.8

.2

1700

Tcp

710

13004011

91

2906001010

4

1

173150

.5

.00

.0

.00

.27

.06

.07

.53

.30

.7

Uni.7.00.37.00.17.81.01.23.69

.67

.08

.7

.6

.7

1700

Tcp

69.50.02

12.70.000.213.830.131.621.31

89.3

1700

Tcp

67.10.00

12.90.000.324.370.051.551.23

87.6

1700

Tcp

67.50.03

13.00.000.283.940.211.661.26

87.9

t-Cell Composition Based on 7229.70.016.400.000.131.760.021.340.71

4.64

(Al+Fe)1.09

29.40.006.670.000.212.050.011.320.69

Si/(A1+Fe)4.41

29.40.016.680.000.181.840.041.400.70

4.41

/(2Mg+2Ca+2Ba+Na+K)1.02

Mol% Exchangeable18.134.6'47.9

16.130.953.0

1.07

i Cations17.034.049.0

1700

Tcp

63.70.02

12.30.000.274.000.071.571.22

83.1

(0)29.40.016.700.000.191.980.011.400.72

4.38

1.04

16.832.850.5

1700

Tcp

680

12004011

89

2906001010

4

1

173150

.9

.02

.9

.00

.28

.20

.04

.58

.34

.2

.5

.01

.51

.00

.18

.93

.01

.31

.73

.54

.04

.6

.6

.7

1700

Tcp

680

12004011

88

2906001010

4

1

182951

.2

.02

.8

.00

.33

.11

.14

.44

.39

.4

.5

.01

.54

.00

.21

.91

.02

.21

.77

.52

.04

.7

.5

.7

124

APPENDIX F (cont)

D r i l l Hole UE-25p#l

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

1700

Tcp

70.00.00

13.20.000.294.090.621.541.34

1700

Tcp

67.20.00

12.70.000.283.950.041.711.56

1800

Tcp

65.70.00

11.80.000.203.500.001.601.22

1800

Tcp

67.20.00

11.10.000.203.180.C91.181.30

1800

Tcp

65.50.00

11.80.050.193.680.161.131.02

1800

Tcp

63.10.00

11.80.000.263.840.081.131.02

1800

Tcp

61.20.00

11.80.000.233.480.161.331.34

1800

Tcp

70.40.00

12.50.040.243.700.091.391.36

Total 91.1 87.5 83.9 84.2 83.5 81.2

Uni t -Ce l l Composition Based on 72 (0)SiTiAlFeMgCaBaNaK

KNaCa+Mg

29.50.006.560.000.181.850.101.260.72

4.50

1.05

18.031.450.6

29.50.006.580.000.181.860.011.450.87

4.47

1.03

20.033.346.7

29.80.006.300.000.141.700.001.410.71

30.30.005.890.000.131.540.001.030.75

Si/(A1+Fe)4.73

(Al+Fe)/(1.09

5.15

2Mg+2Ca+21.15

Mol% Exchangeable17.935.646.5

21.729.948.4

4.70

1.15

4.52

1.11

16.9 16.328.4 27.454.8 56.3

79.5

4.40

1.11

89.7

29.90.006.330.020.131.800.031.000.59

29.60.006.550.000.181.930.011.030.61

29.50.006.690.000.171.800.031.240.82

29.90.006.250.010.151.680.011.150.74

4.77

1.12

203048

.4

.8

.7

193049

.8

.8

.4

125

Depth(ft)Unitd

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total 87.3

2760

Tct

69.40.00

13.40.050.045.300.080.900.51

89.8

APPENDIX F (cont)

D r i l l Hole UE-25p#l

2760

Tct

69.10.00

13,0,

700

0.035.320.150.910.48

89.7

2760

Tct

68.50.00

13.60.000.00

210.231.130.47

89.1

3330

Tlr

60.30.02

15.00.000.127.120.320.760.28

83.9

3330

Tlr

60.60.00

16.00.000.08

2219

0.850.41

85.4

3330

Tlr

63.50.00

15.50.000.066.760.221.020.43

87.5

3330

Tlr

60.40.01

15 10.000.086.570.071.340.38

84.0

SiTiAlFeMgCaBaNaK

30.00.006.090.010.151.590.021.170.88

4.92

1.10

Uni t -Ce l l Composition Based on 72 (0)29.5

0.006.720.020.032.410.010.740.28

4.37

1.14

29 A0.006.860.000.022.420.020.750.26

4.28

29.40.006.850.000.00

3904

0.940.26

2.0

27.80.018.140.000.083.520.060.680.16

Si/(A1+Fe)4.29 3.42

KNaCa+Mg

233C45

.2

.8

.9

82170

.0

.5

.5

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.15 1.13 1.00

Mol% Exchangeable Cations7.5 7.2 3.7

21.7 26.2 15.370.7 66.7 81.0

27.50.008.590.000.053.510.030.750.24

3.20

1.05

5.216.478.3

28.00.008.070.000.043.200.040.870.24

3.47

1.05

5.620.174.4

27.80.008.220.000.053.240.011.200.22

3.38

1.02

4.725.469.9

126

Total

APPENDIX F (cont)

D r i l l Hole UE-25p#l

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

3330

Tlr

63.30.00

15.30.000.086.580.081.030.48

3330

Tlr

63.30.00

15.00.000.066.840.160.850.42

3330

Tlr

63.20.00

14.90.000.086.470.270.990.48

3330

Tlr

63.00.00

14.90.020.066.590.141.030.47

3330

Tlr

63.40.00

15.50.040.156.660.050.920.51

3330

Tlr

64.70.00

15.30.050.126.830.000.670.47

3330

Tlr

62.80.04

15.20.000.196.820.160.730.47

3330

Tlr

64.10.00

15.50.020.106.600.001.310.51

86.9 86.7 86.4 86.1 87.2 88.1 86.4

1.06

Uni t -Ce l l Composition Based on 72 (0)

1.03

KNaCa+Mg

62073

.3

.4

.3

51777

.6

.2

.3

(Al +Fe)/12Mg+2Ca+2Ba+Na+K)1.05 1.03 1.06

Mol% Exchangeable Cations6.4 6.2 6.6

20.0 20.5 18.273.6 73.4 75.1

1.07 1.03

88.1

SiTiAlFeMgCaBaNaK

28.10.008.010.000.053.130.010.890.27

3.51

28.20.007.870.000.043.260.030.730.24

3.58

28.20.007.870.000.053.100.050.860.27

3.59

28.20.007.860.010.043.160.020.890.27

Si/(A1+Fe)3.59

28.00.008.070.010.103.160.010.790.29

3.47

28.20.007.870.020.083.200.000.570.26

3.58

28.00.018.010.000.133.270.030.630.27

3.50

28.10.007.980.010.073.100.001.110.28

3.51

1.04

61379

.4

.8

.8

61479

.2

.7

.0

62469

.2

.4

.4

127

Depth(ft)Unita

SiO2TiO2AT 203Fe203MgOCaOBaONa20K20

Total

SiTiATFeMgCaBaNaK

1335

Tpt

66.00.0213.10.470.514.490.041.071.05

86.8

29.10.016.840.160.342.120.010.920.59

4.17

1335

TDt

60.40.0413.30.470.394.640.040.951.06

81.3

Uni28.60.017.440.170.282.350.010.870.64

3.76

APPENDIX F

Dril

1335

Tpt

64.10.0313.00.470.564.420.000.751.00

84.3

1 Hole

1335

Tpt

59.90.0213.20.570.664.390.001.430.99

81.2

t-Cell Composition29.10.016.950.160.382.150.000.660.58

Si4.09

28.50.017.410.200.472.230.001.320.60

(cont)

! J-13

1421

Tpt

66.30.0210.90.000.002.470.061.094.30

85.1

Based on30.10.015.850.000.001.200.010.962.49

/(Al+Fe)3.74 5.15

1421

Tpt

68.00.0311.80.000.002.650.001.214.02

87.7

72 (0)29.90.016.150.000.001.250.001.032.26

4.87

1421

Tpt

70.90.0012.30.000.002.630.001.384.89

92.1

29.90.006.120.000.001.190.001.132.63

4.88

1421

Tpt

70.30.0012.10.000.002.630.001.234.11

90.3

30.00.006.090.000.001.200.001.022.24

4.93

1.09

KNaCa+Mg

142362

.9

.1

.0

1.12(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.13 1.04 0.99 1.06

Mol% Exchangeable Cations15.5 15.4 13.0 53.521.1 17.5 28.5 20.663.5 67.1 58.5 25.8

1.00 1.07

492227

.7

.7

.5

532224

.2

.8

.0

502227

.2

.8

.0

128

APPENDIX F (cont)

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaMaK

1421

Tpt

71.80.03

12.60.000.002.770.001.164.25

92.5

29.90.016.180.000.001.240.000.942.26

4.85

1421

Tpt

70.10.05

12.00.370.032.840.101.224.09

90.9

Dril l Hole

1421

Tpt

67.80.04

11.40.000.002.450.031.223.93

86.9

1421

Tpt

69.20.03

11.50.000.002.560.001.194.53

88.9

Unit-Cell Composition29.90.026.040.120.021.300.021.012.22

4.85

30.10.015.980.000.001.170.011.052.23

5.03

30.10.015.880.000.001.190.001.002.52

J-13

1421

Tpt

69.40.03

11.80.000.012.300.121.304.86

89.8

Based on30.00.016.000.000.011.060.021.092.68

Si/(A1+Fe)5.12 5.00

1457

Tpt

63.60.03

12.10.000.993.480.100.382.02

82.6

72 (0)29.40.016.590.000.681.730.020.341.19

4.47

1457

Tpt

62.70.02

11.30.040.922.850.080.342.52

80.8

- 29.70.016.290.010.651.450.010.311.52

4.71

1457

Tpt

64.90.03

11.90.000.943.050.030.412.41

83.7

29.70.016.400.000.641.490.010.361.41

4.64

1.09 1.04[Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.06 1.00 1.01 1.03

KNaCa+Mg

512127

.0

.1

.9

482228

.9

.2

.9

Mol% Exchangeable Ca t ions50.1 53.4 55.4 30.323.6 21.3 22.5 8.626.2 25.3 22.1 61.1

1.04

38.77.9

53.3

1.06

36.09.3

54.7

129

APPENDIX F (cont)

D r i l l Hole J-13

Depth(ft)Uni t d

Si 02TiO2A1203Fe203MgOCaOBaONa2OK20

Total 84.4

1457

Tpt

64.10.00

11.70.060.922.950.050.462.52

82.8

1457

Tpt

65.30.00

11.50.080.932.760.100.392.57

83.7

1457

Tpt

84.7

1457

Tpt

65.50.00

11.80.040.943.010.090.592.88

84.8

1457

Tpt

63.90.03

11.70.160.942.830.190.312,42

82.5

1519

Tht

1519

Tht

85.3 85.3

SiT1AlFeMgCaBaNaK

29.70.016.360.000.601.490.000.431.52

4.67

1.04

U n i t - C e l l Compos i t ion Based on 72 (0)29.70.006.370.020.631.460.010.411.49

4.64

1.05

29.90.006.220.030.631.350.020.351.50

29.70.006.340.060.591.510.030.441.49

S1/(A1+Fe)4.78 4.64

29.70.006.280.010.631.460.020.521.66

4.72

I Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.03 0.98

29.70.016.420.060.651.410.030.281.43

4.58

1.10

29.80.016.300.000.271.690.000.461.64

4.72

1.05

29.60.016.510.010.341.560.000.581.79

4.53

1.06

KNaCa+Mg

371051

.5

.7

.8

Mol% Exchangeable Cations37.2 39.1 37.0 38.9 38.0 40.4 41.910.3 9.0 10.9 12.1 7.4 11.4 13.552.5 51.8 52.1 49.0 54.6 48.2 44.6

130

Depth(ft).Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

1519

Tht

65.90.00

12.60.000.533.790.080.522.71

86.1

29.40.006.650.000.351.810.010.451,54

4.43

1.05

37.110.852.1

1519

Tht

64.00.03

12.20.020.383.820.100.632.40

83.5

Uni29.4

0.016.620.010.261.880.020.561.41

4.45

1.05

34.213.752.1

APPENDIX F

Dr

1519

Tht

64.00.03

12.30.080.473.740.000.773.19

84.6

i l l Hole

1519

Tht

66.00.02

12.10.070.503.590.070.562.91

85.9

t-Cell Composition29.30.016.620.030.321.830.000.681.86

4.40

29.60.016.420.020.331.720.010.491.66

(cont)

J-13

1519

Tht

66.80.00

12.50.010.453.490.000.723.35

87.3

i Based on29.50.006.520.000.301.650.000.621.89

Si/(A1+Fe)4.59 4.53

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K\0.97 1.02

Mol% Exchangeabl39.614.545.8

39.511.648.9

1.02

le Cations42.413.843.8

1519

Tht

66.40.02

12.70.020.473.630.000.753.22

87.2

72 (0)29.40.016.620.010.311.720.000.641.82

4.43

)1.02

40.514.345.2

1519

Tht

66.80.03

12.70.040.523.660.000.713.60

88.0

29.30.016.590.010.341.720.000.612.02

4.44

0.98

43.112.944.0

1519

Tht

67.60.00

11.80.000.423.420.000.633.27

87.2

29.80.006.150.000.281.620.000.541.84

4.86

1.00

43.112.644.3

131

APPENDIX F (cont)

Depth(ft)Uni t a

Si 02TiO2AT 203Fe203MgOCaOBaONa20K20Total

D r i l l Hoi

1546

Tht

64.60.009.70.000.003.910.100.191.82

80.3

1546

Tht

65.50.00

12.30.000.004.440.050.502.93

85.8

Uni t -Ce l l CompositionSiTiAlFeMgCaBaNaK

30.60.005.400.000.001.990.020.171.10

5.67

29.50.006.530.000.002.140,010.441.68

e J-13

1612

Tht

68.10.00

12.20.130.004.390.050.302.55

87.7

Based on29.80.006.290.040.002.060.010.251.42

Si/(A1+Fe)4.52 4.71

1612

Tht

67.60.00

12.40.080.004.560.000.302.42

87.4

72 (0)29.7

0.006.450.030.002.150.000.261.36

4.58

KNaCa+Mg

Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 1.02 1.09 1.10

Mol% Exchangeable Cations33.7 39.5 38.1 36.15.4 10.2 6.8 6.8

60.9 50.3 55.1 57.1

132

APPENDIX F (cont)

Outcrop at Prow Pass, Northern Yucca Mountain

Sample Number: 3-15-82-11; Nevada State Coordinates ( f t ) 786550N, 551400E

P a r t i a l l y welded t u f f near hcse of Topopah Spring Member, Paintbrush Tuff

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

63.50.00

11.20.000.682.130.000.893.16

63.50.00

11.10.000.632.180.000.843.13

63.80.00

11.30.000.682.090.000.863.41

66.80.00

11.90.560.602.410.000.893.33

66.40.00

11.90.000.552.470.000.953.27

67.60.00

12.30.000.612.470.000.893.39

68.90.00

12.10.000.682.110.000.763.43

63.80.00

12.70.000.612.670,000.993.16

Total

KNaCa+Mg

81.5 81.5 82.1 86.6 85.5 87.2 88.0

Uni t -Cel l Composition Based on 72 (0)

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.07 1.08 1.06 1.12 1.08

Mo'\% Exchangeable Cations44.5 44.9 46.9 45.0 44.019.1 18.3 18.0 - 18.3 19.436.4 36.8 35.1 36.8 36.6

1.10 1.15

83.9

SiTiAlFeMgCaBaNaK

29.90.006.220.000.481.070.000.811.90

4.80

29.90.006.180.000.441.100.000.771.88

4.85

29.90.006.230.000.471.050.000.782.04

4.79

29.70.006.260.190.401.150.000.771.89

Si/(A1+Fe)4.61

29.80.006.290.000.371.190.000.831.87

4.74

29.80.006.390.000.401.170.000.761.91

4.66

30.00.006.230.000.440.980.000.641.91

4.82

29.30.006.850.000.421.310.000.881.85

4.28

1.11

451837

.0

.0

.0

481635

.0

.2

.9

411938

.5

.7

.8

133

Sampl eNumber

APPENDIX F (cont)

Outcrop at Prow Pass, Northern Yucca Mountain

5-6-81-1 3-15-82-6

Nonwelded zeolitic tuff in upper and central part of tuff of Calico Hills.Nevada State Coordinates (ft) for sample locations 5-6-86-l=782850N, 550625E;3-15-82-6=786400N, 551100E.

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

63.30.00

12.60.000.74

.77

.000.343.80

83.5

1.09

64.70.00

12.70.00

1337

83.4 87.7 86.2

0.000.353.77

85.0

64.40.00

12.60.000.762.820.000.433.99

85.0

65.30.00

12.90.000.702.760.000.383.94

86.0

Un i t -Ce l l Composition Based on 72 (0)

1.07(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)

1.00 1.08 1.07 1.04 1.10

64.00.00

12.30.000.502.330.000.365.68

85.1

SiTiAlFeMgCaBaNa

K

29.30.006.880.000.511.370.000.30

2.24

4.25

29.40.006.760.000.561.330.040.26

2.17

4.34

29.80.006.200.000.251.120.000.45

2.98

4.81

29.40.006.750.000.541.220.000.37

2.37

Si/(A1+Fe)4.35

29.30.006.780.000.761.150.000.31

2.18

4.33

29.30.006.750.000.521.370.00O.°38

2.32

4.35

29.30.006.820.000.471.330.000.33

2.26

4.30

29.40.006.630.000.341.150.000.32

3.33

4.43

1.00

KNaCa+Mg

506

42

.6

.9

.5

506

43

.2

.0

.8

Mol%62.9.

28.

.0

.3

.7

Exchangeable52.5

8.339.2

Cations49,

7,43,

.5

.0

.5

508

41

.5

.3

.2

517

41

.5

.5

.0

646

29

.8

.2

.0

134

APPENDIX F (cont)

Outcrop at Prow Pass, Northern Yucca Mountain

Sample Number: 3-15-82-6; Nevada State Coordinates ( f t ) 782850N, 550625E

Nonwelded zeo l i t i c t u f f in central part of tu f f of Calico Hi l ls

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

61.00.00

12.40.540.452.270.000.185.61

82.5

29.00.006.970.190.321.160.000.173.40

4.05

1.10

67.53.3

29.2

65.80.00

12.40.000.502.360.000.295.69

87.1

64.20.00

12.00.000.512.200.000.306.03

85.3

61.00.00

12.60.180.462.250.000.324.86

81.6

66.80.00

12.80.000.522.410.000.264.83

87.6

Unit-Cell Composition Based on 7229.50.006.570.000.331.130.000.253.25

4.49

29.50.006.500.000.351.080.000.273.53

29.10.007.070.060.331.150.000.302.96

Si/(A1+Fe)4.54 4.08

29.50.006.65O.OU0.341.140.000.222.72

4.44

(AT +Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 0.98

65.45.1

29.5

1.15 1.12

Mol% Exchangeable Cations67.5

5.127.4

62.56.3

31.2

61.55.0

33.5

65.50.00

12.70.000.432.380.000.396.12

87.5

(0)29.30.006.690.000.291.140.000.343.49

4.38

1.00

66.46.4

27.1

66.70.00

11.70.000.382.080.000.264.76

85.9

30.00.006.220.000.251.000.000.232.73

4.82

1.14

64.85.4

29.8

63.30.00

11.90.000.422.140.000.326.09

84.2

29.50.006.520.000.291.070.000.293.61

4.52

0.9

68.75.5

25.8

135

APPENDIX F (cont)

Compositions of C l i n o p t i l o l i t e s in Outcrop at Prow Pass, Northern Yucca Mt.

Sample Number: 3-15-82-2; Nevada State Coordinates ( f t ) 786600N, 550900E

Nonwelded z e o l i t i c t u f f near base of t u f f of Calico H i l l s

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

68.40.00

12.20.000.010.910.001.107.24

89.9

29.80.006.270.000.010.430.000.934.03

4.76

700

12000C16

90

3006000003

4

.0

.00

.0

.00

.04

.98

.00

.10

.68

.8

Uni.0.00.09.00.03.45.00.92.66

.93

69.60.00

12.40.000.040.900.001.167.95

92.0

68.60.00

13.00.000.041.050.001.208.14

92.1

t-Cell Composition29.80.006.270.000.030.410.000.964.34

4.75

29.40.006.580.000.030.480.001.004.46

64.10.00

11.70.000.030.920.001.217.70

85.6

Based on29.60.006.360.000.020.460.001.084.54

Si/(A1+Fe)4.48 4.65

66.50.00

12.70.000.100.600.000.999.03

89.9

72 (0)29.4

0.006.600.000.070.280.000.855.09

4.45

69.90.00

12.20.000.040.610.000.908.38

92.1

29.90.006.160.000.030.280.000.754.57

4.85

67.30.00

12.20.000.021.130.001,226.29

88.1

29.80.006.370.000.010.540.001.053.55

4.68

1.08 1.10

KNaCa+Mg

74178

.7

.3

.0

72189

.4

.1

.4

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.01 1.02 0.97

Mol% Exchangeable Cations75.6 74.7 74.416.8 16.7 17.87.6 8.5 7.8

0.99 1.04 1.12

80135

.9

.5

.6

8113

5

.3

.3

.4

692010

.0

.3

.7

136

APPENDIX G

ANALCIME COMPOSITIOMS DETERMINED BY ELECTRON MICROPROBE,YUCCA MOUNTAIN, NEVADA

D r i l l Hole USW G- l

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMqCaBaNaK

3371

Tct

59.10.00

19.60.000.000.010.00

12.00.00

90.6

34.50.00

13.50.000.000.010.00

13.60.00

2.56

3371

Tct

58.70.00

19.60.000.000.000.00

11.90.00

90.2

Uni34.40.00

13.60.000.000.000.00

13.60.00

2.54

3371

Tct

59.60.00

19.50.000.000.000.00

12.00.00

91.1

3371

Tct

59.00.00

19.60.000.000.010.00

12.10.00

90.7

t-Cell Composition34.60.00

13.30.000.000.000.00

13.50.00

2.59

34.40.00

13.50.000.000.010.00

13.70.00

Si7(Al+Fe)2.55

3371

Tct

59.10.00

19.70.000.000.040.00

12.10.00

90.9

Based on34.40.00

13.50.000.000.020.00

13.60.00

2.54

3371

Tct

58.90.00

19.70.000.000.010.00

11.80.00

90.5

96 (0)34.50.00

13.60.000.000.010.00

13.40.00

2.54

3371

Tct

58.90.00

19.40.000.000.00COO

12.10.00

90.4

34.50.00

13.40.000.000.000.00

13.70.00

2.57

3371

Tct

57.90.00

19.50.000.000.010.00

11.90.00

89.4

34.30.00

13.60.000.000.010.00

13.70.00

2.52

0.99 1.00

KNaCa+Mg

0100

0

.0

.0

.0

0100

0

.0

.0

.0

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.99 0.99 0.99

Mol% Exchangeable Cations0.0 0.0 0.0

100.0 100.0 99.80.0 0.0 0.2

1.02 0.98 0.99

0100

0

.0

.0

.0

0100

0

.0

.0

.0

0100

0

.0

.0

.0

Unit symbols defined in Table I .

137

Depth( f t ) .Unit

Si 02Ti02AT 203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

3371

Tct

59.00.00

19.60.000.000.000.00

12.10.00

90.7

34.50.00

13.50.000.000.000.00

13.70.00

2.56

0.99

0.0100.0

0.0

3371

Tct

59.00.00

19.60.000.000.020.00

12.20.00

90.8

Uni34.40.00

13.50.000.000.010.00

13.80.00

2.55

0.97

0.099.9

0.1

APPENDIX G (

Dri

3371

Tct

58.10.00

19.10.000.000.000.00

11.60.00

88.9

cont)

11 Hole USW G-1

4095

T l r

60.20.00

18.20.040.000.000.00

11.40.00

89.8

t-Cell Composition34.60.00

13.4• 0.00

0.000.000.00

13.40.00

2.57

(Al+Fe),1.00

35.30.00

12.60.020.000.000.00

13.00.00

4208

T l r

58.20.00

19.50.000.000.000.00

12.10.00

89.8

Based on34.40.00

13.60.000,000.000.00

13.90.00

Si/(Al+Fe)2.80 2.53

/(2Mg+2Ca+2Ba+Na+K'0.97

Mol% Exchangeabl0.0

100.00.0

0.0100.0

0.0

0.98

e Cations0.0

100.00.0

4208

T l r

57.00.00

20.00.000.000.000.00

12.50.00

89.5

96 (0)33.90.00

14.00.000.000.000.00

14.40.00

2.42

)0.97

0.0100.0

0.0

4208

T l r

57.20.00

19.30.000.000.000.00

12.10.00

88.6

34.30.00

13.60.000.000.000.00

14.10.00

2.51

0.97

0.0100.0

0.0

4295

T l r

60.20.00

18.90.070.000.030.03

11.30.00

90.5

35.00.00

13.00.030.000.020.01

12.80.00

2.70

1.02

0.099.90.1

138

APPENDIX G (cont)

D r i l l Hole USW G-l

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

4295

Tlr

60.50.00

18.80.040.000.040.03

11.20.00

90.6

35.20.00

12.90.020.000.020.01

12.60.00

2.73

4295

Tlr

59.40.00

19.50.040.000.020.00

11.50.00

90.5

4295

Tlr

59.40.00

19.30.070.000.000.00

11.50.00

90.3

4341

Tlr

59.60.03

19.40.000.010.010.07

11.80.00

90.9

Unit-Cell Composition34.70.00

13.40.020.000.010.00

13.00.00

2.58

34.70.00

13.30.030.000.000.00

13.00.00

2.60

34.70.01

13.30.000.010.010.02

13.30.00

4341

Tlr

59.10.00

18.40.000.030.010.05

11.40.00

89.0

Based on35.10.00

12.90.000.030.010.01

13.10.00

Si/(A1+Fe)2.61 2.72

4400

Tlr

61.60.00

19.10.000.000.000.26

11.60.00

92.6

96 (0)35.10.00

12.80.000.000.000.06

12.80.00

2.74

4503

Tlr

59.80.00

18.60.000.000.020.00

11.60.01

90.0

35.10.00

12.90.000.000.010.00

13.20.01

2.73

4503

Tlr

57.50.00

19.80.000.000.020.00

12.20.04

89.6

34.10.00

13.80.000.000.010.00

14.00.03

2.46

1.02 1.03

KNaCa+Mq

0990

.0

.8

.2

099

0

.0

.9

.1

(A l +Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 1.00 0.97 0.99 0.97 0.98

Mol% Exchangeable Cations0.0 0.0 0.0 0.0 0.1 0.2

100.0 99.9 99.7 100.0 99.8 99.70.0 0.1 0.3 0.0 0.1 0.1

139

APPENDIX G (cont)

D r i l l Hole USW 6-1

Depth(ft)Unita

Si 02TiO2A1203Fe203MqOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

4700

Tlr

57.80.00

19.70.040.000.000.05

11.90.00

89.5

34.20.00

13.80.020.000.000.01

13.70.00

2.49

4700

Tlr

58.40.00

19.70.010.000.000.18

11.80.00

90.1

47.00

Tlr

58.20.00

20.00.040.000.000.00

11.80.00

90.0

4876

Tlr

59.10.05

18.90.000.020.000.00

11.80.00

89.9

Unit-Cell Composition34.40.00

13.70.000.000.000.04

13.50.00

2.51

34.20.00

13.90.020.000.000.00

13.50.00

2.47

34.80.02

13.10.000.020.000.00

13.50.00

4876

Tlr

56.70.00

20.40.000.000.000.00

12.80.02

89.9

Based on33.60.00

14.30.000.000.000.00

14.70.02

S1/(A1+Fe)2.65 2.36

4876

Tlr

59.90.00

18.80.010.030.020.00

11.70.03

90.5

96 (0)35.00.00

12.90.000.030.010.00

13.20.02

2.70

4876

Tlr

57.30.02

19.00.000.000.000.00

11.90.03

88.3

34.40.01

13.50.000.000.000.00

13.90.02

2.56

4912

r57

0190000

110

88

340

140000

130

2

)r

.1

.00

.9

.01

.00

.00

.00

.9

.00

.9

.1

.00

.0

.00

.00

.00

.00

.8

.00

.43

1.01 1.01

KNaCa+Mq

0100

0

.0

.0

.0

0100

0

.0

.0

.0

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.03 0.97 0.97

Mol% Exchangeable Cations0.0 0.0 0.1

100.0 99.9 99.90.0 0.1 0.0

0.97 0.97 1.02

099

0

.2

.5

.3

0 .99.

0.

280

0100

0

.0

.0

.0

140

APPENDIX G (cont)

Total

Drill Hole USW G-l

Depth(ft)Unita

Si 02TiO2A1203Fe2O3MgOCaOBaONa20K2O

4912

Tlr

58.40.00

20.00.040.000.000.00

11.90.01

4912

Tlr

57.00.00

20.80.000.000.000.00

12.50.00

5093

Tot

59.40.00

20.00.000.000.000.00

11.80.00

5126

Tot

58.60.00

19.50.010.010.030.00

12.20.01

5126

Tot

59.30.00

19.90.030.000.000.03

12.50.02

5167

Tot

57.50.00

19.90.010.000.000.05

12.00.00

5167

Tot

57.40.00

19.70.000.000.010.11

11.60.00

5167

Tot

58.40.00

18.00.010.000.000.00

11.20.00

90.4 90.3 91.2 90.4 91.8 89.5 88.8

U n i t - C e l l Composi t ion Based on 96 (0)

1.02 1.01;Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.03 0.97 0.97 1.01

KNaCa+Mg

099

.1

.90.0

Mol% Exchangeable Cations0.0 0.0 0.1 0.1 0.0

100.0 100.0 99.7 99.9 100.00.0 0.0 0.2 0.0 0.0

1.03

0.0100.0

0.0

87.6

SiTiAlFeMgCaBaNaK

34.20.00

13.80.020.000.000.00

13.50.01

2.47

33.60.00

14.50.000.000.000.00

14.30.00

2.32

34.40.00

13.70.000.000.000.00

13.30.00

2.52

34.40.00

13.50.000.010.020.00

13.90.01

Si/(A1+Fe)2.55

34.30.00

13.60.010.000.000.01

14.00.01

2.53

34.10.00

13.90.000.000.000.01

13.80.00

2.45

34.20.00

13.90.000.000.010.03

13.40.00

2.47

35.10.00

12.80.000.000.000.00

13.10.00

2.75

0.98

0.0100.0

0.0

141

APPENDIX G (cont)

Total

D r i l l Hole USW G-l

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K2O

5167

Tot

57.80.00

20.10.000.000.040.00

12.60.00

5212

Tot

60.40.00

18.60.050.000.010.08

11.30.03

5212

Tot

59.40.00

18.50.000.010.020.13

11.30.03

5212

Tot

58.70.00

19.40.100.020.020.05

11.70.00

5212

Tot

59.80.00

18.90.040.000.020.05

11.70.02

5296

Tot

56.50.00

19.50.020.000.000.12

11.80.00

5296

Tot

59.10.00

20.00.040.000.000.09

11.90.00

5296

Tot

59.00.00

19.80.040.000.000.00

12.00.00

90.5 90.5 89.4 90.0 90.5 87.9 91.1 90.8

Unit-Cell Composition Based on 96 (0)SiTiAlFeMqCaBaNaK

KNaCa+Mq

34.00.00

13.90.000.000.030.00

14.40.00

2.44

0.97

0.099.8

0.2

35.20.00

12.80.020.000.010.02

12.80.02

2.75

1.00

0.299.8

0.0

35.10.00

12.90.000.010.010.03

12.90.02

2.72

34.50.00

13.50.040.020.010.01

13.30.00

Si/(A1+Fe)2.56

34.90.00

13.00.020.000.010.01

13.20.01

2.68

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.99 1.01

Mol% Exchangeable0.2

99.70.2

0.099.8

0.2

0.98

Cations0.1

99.80.1

34.10.00

13.90.010.000.000.03

13.80.00

2.46

1.00

0.0100.0

0.0

34.30.00

13.70.020.000.000.02

13.40.00

2.50

1.02

0.0100.0

0.0

34.40.00

13.60.020.000.000.00

13.60.00

2.52

1.00

0.0100.0

0.0

142

Depth(ft)Unit3

Si 02TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiATFeMgCaBaNaK

5296

Tot

59.20.00

19.50.050.000.000.70

11.70.01

91.2

34.50.00

13.40.020.000.000.16

13.20.01

2.57

5311

Tot

58.90.00

19.80.030.000.020.17

12.20.01

91.1

Uni34.30.00

13.60.010.000.010.04

13.80.01

2.52

APPENDIX G

Dri l l Hole

5311

Tot

59.60.00

19.50.000.000.050.00

12.?0.01

91.4

5412

Tot

56.40.02

19.90.000.000.000.00

12.40.00

88.7

(cont)

USW G-l

5412

Tot

58.00.00

19.30.010.000.000.00

12.00.00

89.3

t-Cell Composition Based on34.60.00

13.30.000.000.030.00

13.70.01

2.59

33.80.01

14.10.000.000.000.00

14.40.00

34.40.00

13.50.000.000.000.00

13.80.00

Si/(A1+Fe)2.40 2.55

5498

Tot

57.50.00

20.00.000.000.000.00

12.00.00

89.5

96 (0)34.1

0.0014.00.000.000.000.00

13.80.00

2.44

5498

Tot

58.10.00

19.90.000.000.000.00

11.80.06

89.9

34.20.00

13.80.000.000.000.00

13.50.05

2.48

5679

Tot

59.30.00

19.60.000.000.040.13

12.20.02

91.3

34.50.00

13.40.000.000.020.03

13.70.01

2.57

0.99 0.98

KNaCa+Mg

0990

.1

.9

.0

099

0

.1

.9

.1

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.97 0.98 0.98 1.01 1.02 0.97

MoT£ Exchangeable Cations0.1 0.0 0.0 0.0 0.3 0.1

99.7 100.0 100.0 100.0 99.7 99.70.2 0.0 0.0 0.0 0.0 0.2

143

APPENDIX G (cont)

D r i l l Hole USW 6-1

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

5746

Tot

57.70.0020.00.000.000.040.0011.90.00

5746

Tot

58.60.0019.20.000.000.040.0011.60.00

Total 89.6 89.4

Unit-Cel l Composition Based on 96 (0)SiTiAlFeMgCaBaNaK

34.1COO13.90.000.000.030.0013.60.00

Si2.45

(Al+Fe)/(1.02

34.60.0013.40.000.000.030.0013.30.00

/(Al+Fe)2.59

2Mg+2Ca+2Ba+Na+K)1.00

Mol% Exchangeable CationsK 0.0 0.0Na 99.8 99.8Ca+Mg 0.2 0.2

144

Depth(ft)Uni ta

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

3393

Tct

61.90.00

18.20.000.000.000.04

11.30.00

91.3

35.60.00

12.30.000.000.000.01

12.60.00

2.88

3393

Tct

61.30.00

18.50.000.000.000.00

11.10.00

91.0

APPENDIX G (cont)

D r i l l Hole UE-25b#l(H)

3393 3393 3506

Tct Tct Tct

61.5 60.7 61.80.00 0.00 0.00

18.7 18.6 18.50.00 0.00 0.000.00 0.00 0.000.02 0.00 0.00

0,11.

002

91.5 90.8

0.02

91.5

3506

Tct

61.60.00

19.00.000.000.040.06

11.60.00

92.4

Uni t -Ce l l Composition Based on 96 (0)35.40.00

12.60.000.000.000.00

12.50.00

2.80

35.30.00

12.70.000.000.010,

12.006

0.00

2.79

35.20.00

12.80.000.000.000.00

12.80.00

S1/(A1+Fe)2.76

35,0

12

5005

0.000.000.000.00

12.50.01

2.84

35.20.00

12.80.000.000.020.01

12.80.00

2.75

3506

Tct

58.50.00

20.60.000.000.030.00

12.70.00

91.8

33.90.00

14.10.000.000.020.00

14.30.00

2.41

3506

Tct

57.60.00

20.80.000.000.000.01

12.50.01

90.9

33.70.00

14.30.000.000.000.00

14.20.01

2.35

0.98 1.01Al+Fe)/(2Mg+2Ca+2Ba+Na+K)

1.00 0.99 1.00 0.99 0.99 1.01

KNaCa+Mg

0100

0

.0

.0

.0

0100

0

.0

.0,0

MoU0.

99.0.

091

Exchangeable0,

100,0,

.0

.0

.0

Cations0,

99,0,

.1

.9

.0

099

0

.0

.8

.2

099

0

.0

.9

.1

099

0

.1

.9

.0

14E

Depth(ft)Unita

SiO2T102A1203Fe203MgOCaOBaONa20K2O

2220

Tcb

59.90.00

19.20.000.000.000.03

12.00.00

APPENDIX G

Dr i l

2220

Tcb

59.30.00

18.80.000.000.000.00

11.90.00

1 Hole

2220

Tcb

59.20.00

19.50.000.000.000.00

11.90.00

(cont)

UE-25p#l

2220

Tcb

59,60.00

19.50.020.000.020.09

11.90.03

2290

Tcb

58.10.00

19.60.020.000.000.13

12.10.00

3453

T l r

62.50.00

18.80.000.000.000.00

11.30.00

Total

SiTiAlFeMgCaBaNa°K

KNaCa+Mg

91.1 90.0 90.5 91.1 90.0

U n i t - C e l l Compos i t i on Based on 96 (0 )34.80.00

13.10.000.000.000.01

13.50.00

2.65

0.97

0.0100.0

0.0

34.80.00

13.00.000.000.000.00

13.50.00

2.67

34.60.00

13.40.000.000.000.00

13.40.00

34.60.00

13.40.010.000.010.02

13.40.02

Si/(A1+Fe)2.58 2.59

34.30.00

13.60.010.000.000.03

13.90.00

2.51

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)0.97 1.00 0.99 0.98

Mol% Exchangeable Cations0.0 0.0 0.2 0.0

100.0 100.0 99.7 100.00.0 0.0 0.1 0.0

92.6

35.50.00

12.60.000.000.000.00

12.40.00

2.81

1.02

0.0100.0

0.0

146

APPENDIX G (cont)

D r i l l Hole J-13

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

KNaCa+Mg

608

TDC

58.0.

19.0.0.0.0.

11.0.

89.

34,0,

13,0000

130

2

1

099

0

60030200,00,16,7,03

.8

.6

.00

.4

.01

.00

.00

.04

.3

.02

.57

.00

.2

.8

.0

608

Tpc

57.0.

19.0.0.0.0.

12.0,

89,

34,0

130000

130

2

1

099

0

800,9,04.00.00,14.0.04

.9

Uni.1.00.9.02.00.00.03.7.03

.46

.01

.2

.8

.0

608

Tpc

57.50.00

19.30.000.000.000.00

11.40.00

88.2

608

Tpc

58.10.00

18.90.070.020.000.00

11.70.01

88.8

t-Cell Composition34.50.00

13.60.000.000.000.00

13.20.00

2.53

34.60.00

13.30.030.020.000.00

13.60.01

1995

Tcp

60.10.02

19.30.040.010.030.13

11.60.03

91.2

Based on34.80.01

13.20.020.010.020.03

13.00.02

Si/(A1+Fe)2.60 2.64

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K1.03 0.98

Mol% Exchangeable0.0

100.00.0

0.199.8

0.1

1.00

' Cations0.2

99.60.2

1995

Tcp

61.0.

18.0.0.0.0.

11.

5007050000,122

0.03

91.

96 ((35,

0.12,0,0,0,0,

12,0

2

)1

099

0

.6

)).3.00.7.02.00.00.03.5.02

.79

.01

.2

.8

.0

1995

Tcp

59.0 .

20.0.0.0.0.

12.0.

91,

34,0,

13,0,0,00

130

2

1

099

0

2022,05,00,04,05,2,05

.8

.2

.01

.8

.02

.00

.02

.01

.7

.04

.48

.00

.3

.6

.2

1995

Tcp

58.0.

20.0.0.0.0.

12.0,

90,

340

130.0.00

130

2

1

0990

,4,00,2,00,00,00.00,1.01

.6

.1

.00

.9

.00

.00

.00

.00

.7

.01

.45

.01

.1

.9

.0

147

APPENDIX G (cont)

Dr-i 11 Hole J-13

Depth(ft)Uni ta

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

Unit-Cel96 (0)SiTiAlFeMgCaBaNaK

1995

TCD

61.40.00

19.10.020.000.020.05

11.20.00

91.9

1995

Tcp

60.30.00

18.90.000.000.000.09

11.50.01

90.9

1 Composition Base

35.20.00

12.90.010.000.010.01

12.50.00

35.00.00

12.90.000.000.000.02

13.00.01

Si/(A1+Fe)2.72 2.71

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.03 1.00

Mol% Exchangeable CationsK 0.0 0.1Na 99.9 99.9Ca+Mg 0.1 0.0

148

APPENDIX H

AUTHIGENIC FELDSPAR COMPOSITIONS DETERMINED BY ELECTRON MIC.ROPROBE,YUCCA MOUNTAIN, NEVADA

Drill Hole USW G-l

Depth(ft)Unita

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMgCaBaNaK

Tet.Other

4208

Tlr

66.90.00

16.30.000.000.000.000.04

15.0

98.2

3.110.000.890.000.000.000.000.000.89

4.000.89

4341

Tlr

67.80.02

19.60.000.010.160.00

11 QJ. J. • u

0.01

99.4

4400

Tlr

69.30.00

19.00.000.000.000.00

11.10.58

100.0

4400

Tlr

69.40.00

19.80.020.000.140.13

11.60.05

101.1

Unit-Cell Composition2.980.001.020.000.000.010.001.010.00

4.001.01

3.020.000.980.000.000.000.000.940.03

3.000.001.010.000.000.010.000.970.00

Coordination of4.000.97

4.000.98

4503

Tlr

67.30.02

16.40.010.020.040.050.07

15.2

99.1

Based on3.100.000.890.000.000.000.000.010.89

Cations4.000.90

4912

Tlr

67.00.00

16.60.040.000.000.160.04

14.9

98.7

8 (0)3.100.000.900.000.000.000.000.000.88

4.000.89

5026

Tot

680

190000

110

98

300000000

40

.1

.00

.0

.00

.00

.16

.00

.2

.09

.5

.01

.00

.99

.00

.00

.01

.00

.96

.01

.00

.97

5026

Tot

66.20.01

16.40,020.000.010.000.07

15.1

97.8

3.090.000.900.000.000.000.000.010.90

4.000.91

3.48

1.00

2.93

0.99

Si/(A1+Fe)3.09 2.97 3.48

(Al+Fe)/(2Mg+2Ca+2 Ba+Na+K)1.01 1.02 0.98

3.42

1.02

3.04

1.01

Unit symbols defined in Table I .

3.42

1.00

KNaCa+Mg

9900

.6

.4

.0

099

0

.1

.1

.8

396

0

.3

.7

.0

099

0

.3

.1

.7

9800

.9

.7

.4

9900

.6

.4

.0

098

0

.5

.7

.8

9900

.2

.7

.1

149

APPENDIX H (cont )

D r i l l Hole USW G-l

DeDth(ft)Unit9

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

5093

Tot

69.10.00

19.70.080.000.250.00

11.40.07

5093

Tot

69.50.00

19.90.070.000.420.00

11.40,03

5093

Tot

69.40.00

19.90.020.000.360.00

11.70.04

5093

Tot

70.10.00

19.50.010.000.310.00

11.50.05

5093

Tot

70.00.00

20.00.020.000.360.00

11.40.07

5093

Tot

69.10.00

20.40.020.000.740.08

11.30.03

5093

Tot

68.30.00

19.40.090.000.210.00

11.50.05

5093

Tot

70.50.00

19.70.000.000.250.00

11.70.04

Total 100.6 101.3 101.4 101.5 101.8 101.7 99.6

Uni t -Ce l l Composition Based on 8 (0)

(Al+Fe)/{2Mg+2Ca+2 Ba+Na+K)1.02 1.02 1.00 1.00 1.03 1.02

102.2

SiTiAlFeMgCaBaNaK

Tet.Other

3.000.001.010.000.000.010.000.960.00

4.010.97

2.97

2.990.001.010.000.000.020.000.950.00

4.010.97

2.96

2.990.001.010.000.000.020.000.980.00

3.010.000.990.000.000.010.000.960.00

Coordination of4.001.00

2.96

4.000.97

3.000.001.010.000.000.020.000.950.00

Cations4.010.97

Si/(A1+Fe)3.05 2.97

2.970.001.030.000.000.030.000.940.00

4.010.98

2.87

3.000.001.000.000.000.010.000.980.00

4.000.99

2.98

3.010.000.990.000.000.010.000.970.00

4.000.98

3.04

1.01 1.00

KNaCa+Mg

098

1

.4A.2

097

2

.2

.8

.0

098

1

.2

.1

.7

098

1

.3

.3

.5

097

1

.4

.9

.7

096

3

.2

.3

.5

098

1

.3

.7

.0

098

1

.2

.6

.2

150

APPENDIX H (cont)

Drill Hole USW G-l

Depth(ft)Unita

Si 02TiO2A12O3Fe203MgOCaOBaONa20K20

Total

SiTiAlFeMqCaBaNaK

Tet .Other

KNaCa+Mq

5126

Tot

59.00.04

19.30.010.000.000.05

11.80.02

90.2

2.880.001.110.000.000.000.001.120.00

4.001.12

2.59

0.99

0.199.9

0.0

5126

Tot

67.0 .

17.0 .0 .0 .0.0.

802.31303.0105.10

16.2

101.

3,0,0.0.0,0,00,0

30

3

0

9800

.6

.07

.00

.92

.00

.00

.00

.00

.01

.93

.99

.95

.31

.98

.8

.9

.3

5296

Tot

68.40.00

19.70.040.000.280.00

11.60.04

100.1

Unit-Cell2.990.001.010.000.000.010.000.980.00

5311

Tot

69.5-0.03

19.10.040.000.340.13

11.50.09

100.7

5311

Tot

68.60.01

19.60.070.010.550.00

11.50.06

100.4

Composition Based3.010.000.980.000.000.020.000.970.00

Coordination of4.001.00

2.94

3.990.99

S1/(A1+Fe)3.08

2.990.001.010.000.000.030.000.970.00

Cations4.001.00

2.96

(Al+Fe)/(2Mq+2Ca+2Ba+Na+K)1.00

0.298.5

1.3

0.97

0.597.9

1.6

0.98

0.397.0

2.6

5412

Tot

66.40.07

16.80.040.000.020.000.32

15.0

98.7

on 8 (0)3.080.000.920.000.000.000.000.030.89

4.000.92

3.35

1.00

96.83.10.1

5412

Tot

67.40.02

16.50.010.020.020.100.05

15.5

99.6

3.100.000.890.000.000.000.000.000.91

3.990.92

3.46

0.97

99.30.50.3

5412

Tot

68.30.00

19.40.010.000.020.00

11.90.09

99.7

2.990.001.000.000.000.000.001.010.01

4.001.02

2.99

0.98

0.599.4

0.1

151

Depth( f t ) ,Uni t a

SiO2TiO2A1203Fe203MqOCaOBaONa2OK2O

Total

SiTiATFeMqCaBaNaK

Tet .Other

5412

Tot

66.6O.O5

19.10.000.000.060.00

11.60.12

97.5

2.990.001.010.000.000.000.001.010.01

4.001.02

5498

Tot

67.20.00

17.00.000.000.030.000.03

15.3

99.6

3.080.000.920.000.000.000.000.000.90

4.000.90

APPENDIX H

Dril

5498

Tot

66.90.00

17.00.000.000.000.000.06

15.3

99.3

Unit-Cell3.080.000.920.000.000.000.000.010.90

11 Hole

5498

Tot

69.70.00

18.90.000.000.020.00

11.70.09

100.4

(cont)

USW G-l

5498

Tot

69.20.00

19.30.000.000.040.06

11.90.09

100.6

Composition Based3.030.000.970.000.000.000.000.990.00

3.010.000.990.000.000.000.001.000.00

Coordination of Cations4.000.90

3.990.99

3.991.01

5637

Tot

68.40.00

19.90.010.000.420.03

11.50.04

100.3

on 8 (0)2.980.001.020.000.000.020.000.970.00

4.000.99

5746

Tot

67.10.00

20.30.110.001.050.00

10.60.63

99.8

2.950.001.050.000.000.050.000.900.04

4.000.99

5746

Tot

69.60.00

19.80.000.000.220.00

11.90.04

101.6

2.990.001.000.000.000.010.000.990.00

4.001.00

Si/(A1+Fe)2.96 3.35 3.34 3.13 3.04 2.91 2.79 2.98

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.99 1.02 1.02 0.98 0.98 1.01 1.02 0.99

KNaCa+Mg

099

0

.7

.0

.3

9900

.5

.3

.2

9900

.4

.6

.0

099

0

.5

.4

.1

099

0

.5

.3

.2

097

2

.2

.8

.0

391

5

.6

.4

.0

098

1

.2

.8

.0

152

Depth(ft)Unita

Si 02Ti02A1203Fe203MgOCaOBaONa20K20

Total

SiTiATFeMgCaBaNaK

Tet.Other

5746

Tot

66.40.00

20.10.000.001.130.00

10.30.02

98.4

2.950.001.050.000.000.050.000.930.00

4.000.99

2.80

5746

Tot

69.10.00

19.80.040.000.380.00

11.50.04

100.9

Uni2.990.001.010.000.000.020.000.970.00

4.000.98

2.96

APPENDIX H

Dri

5746

Tot

68.40.00

19.60.030.000.170.00

11.30.07

99.6

11 Hole

5847

Tot

69 .80.04

18.80.040.000.130.05

11.30.13

100.3

(cont)

USW G - l

5847

Tot

68.40.03

19.60.050.020.620.15

11.50.09

100.5

t-Ceil Composition Based on3.000.001.010.000.000.010.000.960.00

3.030.000.960.000.000.010.000.950.01

2.980.001.010.000.000.030.000.970.01

5847

Tot

67.20.03

19.50.080.001.240.20

10.80.10

99.1

8 (0)2.970.001.020.000.000.060.000.930.01

Coordination of Cations4.010.97

2.96

4.000.97

3.991.01

S1/{A1+Fe)3.14 2.96

3.990.99

2.92

5847

Tot

68.60.01

19.50.000.010.950.00

11.10.07

100.2

2.990.001.000.000.000.040.000.94O.CO

3.990.99

2.98

5947

Tot

67.30.00

20.00.010.000.800.00

11.10.01

99.2

2.960.001.040.000.000.040.000.950.00

4.000.99

2.85

(Al+Fe)/(2Mg+2Ca+2 Ba+Na+K)1.01 1.01 1.03 0.99 0.97 0.97 0.97 1.01

KNaCa+Mg

094

5

.1

.4

.5

098

1

.2

.0

.8

098

0

.4

.8

.8

098

0

.7

.6

.6

096

3

.5

.5

.0

093

5

.6

.5

.9

095

4

.4

.0

.6

096

3

.1

.1

.8

153

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCaBaNaK

Tet .Other

2325

Tht

67.90.00

16.50.030.000.020.000.03

15.5

99.9

3.110.000.890.000.000.000.000.000.90

4.000.91

3.49

2325

Tht

68.10.04

16.40.000.000.000.000.04

15.3

99.9

3.110.000.890.000.000.000.000.000.89

4.000.89

3.52

APPENDIX H <

Dril l

2325

Tht

68.70.00

16.60.000.000.020.000.18

15.1

100.6

Unit-Cell I3.110.000.890.000.000.000.000.020.87

!cont)

Hole USW G-2

2325

Tht

68.80.00

16.40.000.000.000.000.05

15.2

100.4

2430

Tht

67.80.01

16.80.030.000.000.000.03

15.5

100.1

Composition Based3.120.000.880.000.000.000.000.000.88

Coordination4.000.89

3.51

4.000.88

3.100.000.900.000.000.000.000.000.90

4805

Tlr

65.50.00

20.70.100.001.550.08

10.70.39

98.9

on 8 (0)2.910.001.080.000.000.070.000.920.02

of Cations4.000.91

Si/(A1+Fe)3.56 3.43

4.001.02

2.68

4805

Tlr

65.60.00

16.70.010.000.000.180.32

15.2

98.0

3.070.000.920.000.000.000.000.030.91

3.990.94

3.33

4805

Tlr

66.90.00

16.50.000.000.000.100.17

15.1

98.7

3.100.000.900.000.000.000.000.020.89

4.000.91

3.44

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.98 0.99 0.99 0.99 1.00 1.00 0.97 0.99

KMaCa+Mg

9900

.6

.3

.1

9900

.6

.4

.0

9810

.1

.8

.1

9900

.5

.5

.0

9900

.7

.3

.0

290

7

.2

.5

.3

9630

.9

.1

.0

9810

.3

.7

.0

154

Depth(ft)Unita

SiO2TiO2A1203Fe203MgOCaOBaONa2OK20

Total

SiTiAlFeMgCaBaNaK

Tet .Other

4838

Tlr

68.70.00

19.50.030.000.360.00

11.70.06

100.3

2.990.001.000.000.000.020.000.990.00

3.991.01

2.99

4838

Tlr

680

190000

110

100

201000

.7

.00

.7

.04

.00

.68

.00

.5

.09

.7

Uni.98.00.01.00.00.03

0.0000

31

2

.97

.00

.99

.01

.96

APPENDIX H

Dril

4838

Tlr

68.60.02

19.10.000.000.270.00

11.60.02

99.6

1 Hole

5696

Tot

67.00.00

20.10.040.000.940.20

11.50.02

99.8

(cont)

USW G-2

5820

Tot

69.80.00

19.90.070.000.360.00

11.50.07

101.8

t-Cell Composition Based on 83.010.000.990.000.000.010.000.990.00

Coordi3.991.00

3.05

2.950.001.040.000.000.040.000.980.00

nation3.991.03

Si/(A12.82

2.990.001.010.000.000.020.000.960.00

of Cations4.000.98

+Fe)2.97

5895

Tot

66.20.00

19.80.000.000.460.15

11.40.04

98.1

(0)2.960.001.040.000.000.020.000.990.00

4.001.02

2.84

5895

Tot

66.70.00

19.50.000.000.500.03

11.40.04

98.2

2.970.001.030.000.000.020.000.980.00

4.001.01

2.89

5992

Tot

68.30.00

19.00.000.000.000.05

11.80.04

99.2

3.010.000.980.000.000.000.001.010.00

3.991.01

3.06

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.97 0.97 0.97 0.97 1.01 1.00 0.99 0.97

KNaCa+Mg

098

1

.3

.0

.7

096

3

.5

.4

.1

098

1

.1

.6

.3

095

4

.1

.6

.3

097

1

.4

.9

.7

097

2

.2

.6

.2

097

2

.2

.4

.4

099

0

.2

.8

.0

155

APPENDIX H (cont)

D r i l l Hole USW G-2

Depth( f t ) .Unita

SiO2TiO2A1203Fe203MgOCaOBaONa20K20

Total

Uni t-Cel8 (0)SiTiAlFeMgCaBaNaK

5992

Tot

63.50.02

18.00.060.000.081.050.42

15.5

98.7

1 Composition Based on

2.990.001.000.000.000.000.020.040.93

Coordination of CationsTet. 4.00Other 1.00

S1/(A1+Fe)2.98

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.98

KNaCa+Mg

9530

.7

.9

.4

156

APPENDIX H (cont)

D r i l l Hole USW G-3

Depth(ft)Un i t a

Si 02TiO2A1203Fe203MgOCaOBaONa20K20

Total

Unit-Cel8 (0)SiTiAlFeMgCaBaNaK

4708

T l r

66.80.08

17.10.000.000.030.070.03

15.2

99.3

1 Composition Based on

3.080.000.930.000.000.000.000.000.90

Coordinat ion o f CationsTe t . 4.01Other 0.90

Si/(A1+Fe)3.32

(Al +Fe)/(2Mg+2Ca+2Ba+Na+K)1.03

KNaCa+Mg

9900

.5

.3

.2

157

APPENDIX H (cont)

Drill Hole USW G-4

Depth( f t ) .Unita

SiO2TiO2AT 203Fe203MqOCaOBaONa20K20

Total

Unit-Cel8 (0)SiTiAlFeMgCaBaNaK

2738

Tcb

66.40.00

17.70.000.000.030.050.06

16.1

100.4

1 Composition Based on

3.040.000.960.000.000.000.000.010.94

Coordinat ion o f CationsTet .Other

Si

(Al+Fe)

KNaCa+Mg

4.000.95

/(Al+Fe)3.18

/(2Mg+2Ca+2Ba+Na+K)1.01

99.30.60.2

158

APPENDIX H (cont)

Depth(ft)Unita

SiO2TiO2A12O3Fe203MqOCaOBaONa20K20

Drill

2980

Tct

67.30.0020.10.000.000.580.0011.80.06

Hole J-13

2980

Tct

67.20.0019.60.000.000.150.0012.00.04

2980

Tct

68.30.0019.60.000.000.330.0012.00.03

Total 99.8 99.0 100.3

Unit-Cell Composition Based on 8(0)SiTiAlFeMgCaBaNaK

Tet.Other

2.950.001.040.000.000.030.001.010.00

Coordination3.991.04

Si/(2.83

2.970.001.020.000.000.010.001.030.00

2.980.001.010.000.000.020.001.020.00

of Cations3.991.04

Al+Fej2.91

3.991.03

2.95

[Al+Fe)/(2Mg+2Ca+2Ba+Na+K)0.98 0.98 0.96

KNaCa+Mg

0972

.3

.0

.6

0990

.2

.1

.7

0981

.2

.3

.5

159

APPENDIX H (cont)

Outcrop a t Prow Pass, Northern Yucca Mountain

Sample Number 3-15-82-4 82FB-1

Both samples are nonwelded t u f f near base o f t u f fof Cal ico H i l l s . Nevada State Coordinates ( f t )for sample l oca t i ons : 3-15-82-4=786500N, 551000E;82FB-1=7897OON, 549700E.

Si 02T102AL203Fe203MgOCaOBaONa20K20

67.90.00

17.20.000.000.000.000.23

15.2

67.50.00

17.50.000.000.000.000.17

15.4

Total 100.5 100.5

Uni t -Cel l Composition Based on 8 (0)SiTiAlFeMgCaBaNaK

Tet.Other

3.090.000.920.000.000.000.000.020.88

Coordinat ion of Cations4.000.90

Si/(A1+Fe)3.36

3.070.000.940.000.000.000.000.010.90

4.010.91

3.28

(Al+Fe)/(2Mg+2Ca+2Ba+Na+K)1.02 1.03

KNaCa+Mg

97.82.20.0

98.41.60.0

160

•U.S. GOVERNMENT PRINTING OFFICE: 1986-0-773-034/40043