STATE OF ALASKA

Wal ter J . H icke l - Governor

DEPARTMENT OF NATURAL RESOURCllS

Phi7 R . Holdsworth - Commissioner

DIVISION OF M I N E S AND MINERALS

James A. Wi l l iams - D i r e c t o r

Geochemical Report No. 14

Geochemical I nves t i ga t i ons Wil low Creek Souther ly t o Kenai Lake Region,

South Centra l Alaska

BY

M a r t i n W . Jasper

Juneau, A1 as ka June 1967

TABLE OF CONTENTS

Page

SUMMARY

INTRODUCTION

TOPOGRAPHY

GENERAL GEOLOGY

MINERAL DEPOSITS Kenai Peninsula Wil low Creek D i s t r i c t

GEOCHEMICAL FIELD INVESTIGATIONS

RESULTS

REFERENCES

ILLUSTRATIONS AND TABLES

Diagram showing Figures 1 t o 14 l oca t i ons . F igures 1 t o 14. Sample l o c a t i o n maps. Concentrat ion frequency graph f o r copper , lead, z inc ,

molybdenum and n i c k e l f o r Figures 1 and 2 . Concentrat ion frequency graph f o r copper, lead, z inc,

molybdenum and n i c k e l f o r F igures 3 t o 14. Table 1. Resul ts o f analyses.

GEOCHEMICAL INVESTIGATIONS WILLOW CREEK SOUTHERLY TO KENAI LAKE REGION,

SOUTH CENTRAL ALASKA 1966

By M a r t i n W. Jasper

SUMMARY

The 1966 geochemical stream sediment sampl ing a long 220 m i l e s o f highway and access roads f rom the Wi l low Creek D i s t r i c t s o u t h e r l y t o t he head o f Kenai Lake, and w e s t e r l y a long t he S t e r l i n g Highway t o M i l e 64, d i d n o t d i s c l o s e any s t r o n g anomalies i n t he 113 stream samples taken.

Seven samples had moderate ly anomalous amounts o f copper, two o f lead: twenty-two o f z inc , and f i f t e e n o f molybdenum. No anomalous n i c k e l samples were obta ined. A l l samples were checked f o r r a d i o a c t i v i t y , b u t none was found.

Streams hav ing moderate anomalies o f more than 120 p a r t s p e r mi 11 i o n copper, more than 30 ppm lead, more than 160 ppm z inc , o r more than 8 ppm molybdenum should be o f s u f f i c i e n t i n t e r e s t f o r f o l low-up sampl ing f u r t h e r u p s tream ,

On t h e Kenai Peninsula, numerous go ld -qua r t z d i scove r i es have been made s i n c e t h e f i r s t p rospec to rs a r r i v e d i n t he 1890ts , b u t none o f them have proven t o be economic t o date. P lace r depos i ts d iscovered i n t h e Ressur rec t ion Creek dra inage bas in had a notewor thy p roduc t i on record , and t he M i l l s Creek and Sunr ise areas a r e repo r ted t o have had a s u b s t a n t i a l p l a c e r g o l d p roduc t ion .

I n t he Wi l low Creek and Upper L i t t l e Sus i tna R i v e r d i s t r i c t f o l l o w i n g t he 1905 go ld -quar tz d i scove r i es , a number o f t h e mines were h i g h l y p roduc t i ve u n t i l 1942, when a l l g o l d mines were shu t down f o r d u r a t i o n o f World War 11. A f t e r t h e war o n l y one mine operated f o r a s h o r t p e r i o d d u r i n g 1946-1947.

No copper, lead , z i n c o r o t h e r base metal depos i t s o r showingsof s u f f i c i e n t va lue t o encourage e x p l o r a t i o n have been found on t he Kenai Peninsula t o date. Th i s does n o t n e c e s s a r i l y mean t h e r e a re no wor thwh i le hidden o r e depos i ts i n t h a t reg ion .

I n t h e W i l l ow Creek d i s t r i c t s c a t t e r e d low grade copper occurrences i n the Lone Tree Gulch area have l ong been known. Ver.y l i t t l e work has been done upon them.

A low grade molybdenum-copper p rospec t i s l oca ted on a steep t a l u s s lope a t head o f Reed Creek, about two m i l e s no r theas t o f t he Snowbird go ld -qua r t z mine. I t was d iscovered i n 1915, and i s h e l d by Palmer res i den t s . Past development has been l a r g e l y l i m i t e d t o annual assessment work.

INTRODUCTION

The geochemical stream sediment sampl ing program was con t inued throughout t he 1966 f i e l d season by the D i v i s i o n o f Mines and M ine ra l s i n i t s search f o r t r a c e amounts o f t he m e t a l l i c m ine ra l s (copper, lead , z inc , molybdenum, n i c k e l , and o t h e r ) t h a t m igh t l e a d t o hidden o re depos i t l o c a t i o n s .

Th i s r e p o r t covers r e s u l t s ob ta ined from analyses o f t h e 113 geochemical samples taken by t he au tho r f rom se lec ted streams i n 14 areas a long highway and access roads which extend f rom t h e W i l l ow Creek d i s t r i c t south t o t he head o f Kenai Lake, and west a long t h e S t e r l i n g Highway t o M i l e 64.

Resu l ts f rom analyses o f 106 stream sediment samples taken i n 1964 and 1965, by Jasper and Bary i n some o f t h e 14 areas covered i n 1966, a r e i n c l u d e d i n t h i s r e p o r t f o r comparison ( f i g u r e s 1 t o 14, and t a b l e 1).

TOPOGRAPHY

The topography o f t h e Talkeetna Mountains i n t he Wi l low Creek d i s t r i c t i s l a r g e l y one o f steep s lopes, s e r r a t e d r i d g e s and numerous g l a c i a l c i r ques and hanging v a l l e y s . Ridge c r e s t s range f rom 3800 t o 5000 f e e t e l eva t i ons . Va l l eys range f rom 1600 t o 2500 f e e t i n t h e upper L i t t l e Sus i tna area, and 2200 t o 3600 f e e t e l e v a t i o n s i n t he upper Wi l low Creek - C r a i g i e Creek l o c a l i t i e s .

I n t he r e g i o n between Wolver ine Creek i n t he Palmer area south t o head o f Kenai Lake and west a long t h e S t e r l i n g Highway t o M i l e 64, t he c r e s t s o f t he Chugach Mountains have a range o f 5500 t o 7500 f e e t w i t h an average o f around 6500 f e e t above sea l e v e l .

GENERAL GEOLOGY

I n t he Wi l low Creek d i s t r i c t q u a r t z d i o r i t e i s t he predominant bedrock type. The n o r t h s i d e o f Ba ld Nounta in Ridge f rom i t s w e s t e r l y l i m i t s e a s t e r l y t o Hatcher Pass i s l a r g e l y covered by t h e B i r c h Creek s c h i s t , which i s cons idered o f Pre-Cambrian age, (Capps, 1940). On t he south s i d e o f the r i d g e severa l outcrops a r e conglomerate and/or arkose sandstone. South o f L i t t l e Sus i tna Lodge t h e L i t t l e Sus i tna R i v e r i s entrenched i n arkose sandstone and conglom- e ra te , (Capps , 1940).

Between Wolver ine Creek i n t he Palmer area s o u t h e r l y t o t h e Hope d i s t r i c t , a more o r l e s s cont inuous be1 t o f Pre-Cretaceous lavas, t u f f s , and greenstone predominate a1 ong t he nor thwest margi n o f t he Chugach Mountai ns , (Capps , 1940).

From mouth o f Ingram Creek ( M i l e 75, Seward Highway) south t o t he Kenai Lake reg ion , t he bedrock i s l a r g e l y graywacke and s l a t e ; a number o f a c i d i c d i kes have been noted i n t h i s fo rmat ion . The d i kes g e n e r a l l y a r e c l o s e l y assoc ia ted wi t h go1 d-quar tz occurrences.

MINERAL DEPOSITS

Kenai Peninsula

From t h e 1890 's t o 1942 t h e r e was ex tens i ve p rospec t i ng a c t i v i t y i n access- i b l e areas o f t he Kenai Peninsula, and numerous go ld -qua r t z d i scove r i es were made Extens ive development programs were undertaken, and smal l mi 11 s were b u i 1 t and operated on % number of t i l e p r o p e r t i e s . None o f these ventures a re known t o have been p r o f i t a b l e over t h e t o t a l p e r i o d o f t h e i r opera t ions , and many o f t h e prop- e r t i e s were abandoned.

The r e c e n t proposals t o subs id i ze t h e g o l d m in ing i n d u s t r y has l e d t o r e s t a k i n g many o f t he abandoned mines and prospects .

Reopening o f t h e o l d Pr imrose mine i s r e p o r t e d t o be under cons ide ra t i on by t h e owners. S i t u a t e d i n area o f t h e Pr imrose community a t head o f Kenai Lake, m in ing o f t he s t i b n i t e assoc ia ted w i t h t h e go ld -quar tz ve ins i s s a i d t o be t h e main o b j e c t i v e .

Two s t i b n i t e d i scove r i es have been repo r ted i n t he S k i l a k and Tustemena Lakes area d u r i n g 1966. No i n f o r m a t i o n concern ing l o c a t i o n s and e x t e n t o f t h e occurrences has been r e c e i ved.

Wi l low Creek D i s t r i c t

Sca t te red occurrences o f low grade copper m i n e r a l i z a t i o n have been noted on t he s teep mountain s lopes on south s i d e o f Lone Tree Gu lch 's main (unnamed) t r i b u t a r y ; they a re s i t u a t e d 3% t o 4% m i l e s n o r t h e a s t e r l y f rom the L i t t l e Sus i tna Lodge i n t h e upper L i t t l e Sus i tna R i v e r dra inage bas in . Lack o f v i s i b l e m i n e r a l i z a t i o n c o n t i n u i t y f o r apprec iab le d is tances has discouraged ~ r o s p e c t o r s .

The l ong known low grade molybdenum-copper m i n e r a l i z a t i o n a t head o f Reed Creek, two m i l e s no r theas t o f t h e Snowbird mine i n t h e upper L i t t l e Susi t n a R i v e r dra inage bas in , i s s i t u a t e d on a steep t a l u s covered s lope which has made i t d i f f i c u l t t o appra ise. A s h o r t a d i t ( l e n g t h n o t r epo r ted ) was d r i v e n p r i o r t o 1917 f o l l o w i n g i t s d iscovcw,and has been l a r g e l y covered w i t h t a l u s . Width and l a t e r a l e x t e n t o f m i n e r a l i z a t i o n has n o t been repor ted . Th i s ~ r o s p e c t i s h e l d by Palmer r e s i d e n t s .

I n t he Bald Mountain Ridge area o f t he k l i l l o w Creek d i s t r i c t , stream sed i - ment samples taken i n t h a t f o rma t i on g e n e r a l l y c a r r i e d abundant magnet i te . Th is m ine ra l was f r e q u e n t l y noted over a d i s t ance o f severa l m i l e s i n s c h i s t o u t c r o ~ s near t h e r i d q e c r e s t as t h i n " p l a t e y " n ~ a g n e t i t e c r y s t a l s . The abundance o f magnet i te i n t he streams sampled and t he r e l a t i v e frequency o f t he disseminatet i c r y s t a l 1 i n e magnet i te suggests t h a t an a i rborne magnetometer survey may be j u s t i f i e d a long f u l l l e n g t h o f Ba ld r4ountain Ridge.

GEOCHEI,jICAL FIELD iNVESTIGATIONS

Dur ing t he 1966 season 113 stream sediment sarnoles were taken i n the reg ion between t he Wi l low d i s t r i c t s o u t h e r l y a lona the Seward Highway t o head o f Kenai Lake, and w e s t e r l y a lonq t he S t e r l i n g Iiighway t o !,l i le 64.

I n f i e l d t e s t i n g t he Hawkes method was used i n checking f o r t races o f the c o l d e x t r a c t a b l e meta ls (Hawkes , 1963).

S i t e s f o r sampl ing were se lec ted w e l l above b r idges , c u l v e r t s , and o t h e r s t r u c t u r e s o r m a t e r i a l s t h a t cou ld contaminate the streams. The o n l y two de f in - i t e l y contaminated samples taken i n t he p a s t t h r e e y e a r s ' proqram are :

1. A S l a t e Creek sample by Bary about % m i l e above t he Seward Highway a t G i l p a t r i c k , where a r e l a t i v e l y h i gh (245 ppm) l ead anomaly was repo r ted (Map No. 148, F ig . 8 ) . A f o l l ow -UD sample by Jasper, 600 f e e t above t he o l d Hatcher m i l l and 1 m i l e upstream f rom the Highway, was w e l l below the anom- a lous range ( ~ a p Plo. 147, F ig . 8 ) . Old d iscarded car b a t t e r i e s found i n creek below t h e m i l l were respons ib l e f o r t he Bar,y sample r e s u l t s .

2. A Summit Creek sample by Bary ( Ihp No. 146, F ig . 8 ) , taken 1000 f e e t above t he Seward Highway a t N i l e 45, and t he one taken by Jasper + m i l e f u r t h e r up stream were bo th lead-contaminated by o l d b a t t e r i e s l a t e r noted i n t he creek, (Flap No. 145, F i g . 8 ) .

The samples taken averaqed about 8 pounds; approx imate ly 2 pounds o f each was "grab" sa~npled f rom t h e s l i g h t l y heaped 11 i n c h g o l d pan. The l a r g e r p o r t i o l ( ? 2 I b . ) was panned a t t h e sample s i t e , and t he concent ra tes - i f any - were saved f o r i d e n t i f i c a t i o n o f any heavy m ine ra l s t h a t m igh t be p resen t . The + 2 l b . p o r t i o n was l a t e r d r i e d and screened; h a l f o f t h e minus 80 mesh m a t e r i a l was sen t t o t he Rocky Mountain Geochemical Labora to ry , S a l t Lake City, Utah, where analyses f o r t r a c e amounts (ppm) o f copper, lead, z i nc , molybdenum and n i c k e l were made. Balance o f t h e minus 80 mesh m a t e r i a l was k e p t f o r p o s s i b l e f u t u r e a d d i t i o n a l check i nq and s tudy.

A s tudy o f each concent ra te sample under a b i n o c u l a r microscope was made i n t he o f f i c e by Michael M i t c h e l l , Jr., l a b o r a t o r y t echn i c i an . I n samples hav ing r e l a t i v e l y abundant magnet i te , z i r con , o r o t h e r m ine ra l s , t h e m ine ra l s were repo r ted on an es t imated percentage bas i s . Where o n l y a few p a r t i c l e s o f t he heavy m ine ra l s were p resen t , they were repo r ted as number o f g ra i ns . Whi le percentaqes es t imated - e s p e c i a l l " f o r magnet i te - were f r e q u e n t l y h igh , a l l o f t he concent ra te samoles were very smal l f r a c t i o n s o f t h e average six-pound p o r t i o n panned.

Tabu la t ions o f es t imated nercentages and g r a i n counts a re i nc l uded i n t a b l e 1.

RESULTS

O f t he 113 samples taken i n t h i s r eg ion , t he t h r e s h o l d va lues a re : copper, 100 ppln ( p a r t s p e r m i l 1 i o n ) ; lead, 30 ppm; z i nc , 120 ppm; and molybdenum, 5 ppm.

O f the 60 saniples c o n t a i n i n g t h r e s h o l d va lues, t h e f o l l o w i n g appear t o be moderate ly anomalous and war ran t a d d i t i o n a l sampl ing f u r t h e r upstream.

F i qure Map No. PPM --- - ---.- No. -- Cu Z n Mo

REFERENCES

Capps , S.A., 1940, A1 aska Rai 1 road Region: U.S. Geological Survey Bul l e t i n 907

Cobb, E.H., 1960, Copper, l ead and z inc occurrences i n Alaska: U.S. Geological Survey Mineral Inves t iga t ions Resource Map MR-9

Cobb, E.H., 1960a, Molybdenum, t i n and tungsten occurrences i n Alaska: U.S. Geological Survey Mineral I nves t iga t i ons Resource Map MR-10

Cobb, E.H., 1960c, Chromite, cobal t , n i c k e l and p lat inum occurrences i n Alaska: U. S. Geological Survey Mineral I nves t iga t i ons Resource Map MR-8

Hawkes, H.E., 1963, D i th izone f i e l d t e s t : Economic Geology, V.58, p. 579-586

D I A G R A M

Showing L o c a t i o n s of

fig.^ 1 to 14

F i g . 3

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Map No.

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2 12 Red 2 ml Covered Brown 10 ml

Q u a r t z d i o r i t e , Few g r s . magnet i te l i t t l e d ike sediments s c a r c e

2 +20 Pink 1 m l Covered Red 7 ml Purple 10ml Brown +3 ml

Q u a r t z d i o r i t e , 70-80% magneti t e l i t t l e d i k e 5-10% z i r con

3 g r . c h a l c o p y r i t e

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3 20 6 Pink 2 ml Quar t z Purple 4 ml d i o r i t e

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c h a l c o p y r i t e

4 35 5 Pink 2 m l Qua r t z Purp le 3 m1 d i o r i t e

Q u a r t z d i o r i t e , 2 50% magneti t e , 3 g r . & greens tone , & s c h e e l i t e , 45 g r . gabbro z i r con , 1 i t t l e p y r i t e

4 10 7 Pink Quar t z d i o r i t e

Quartz d i o r i t e Magnet i te abundant

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3 10 6 Purple Qua r t z d i o r i t e

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3 15 8 Red 3 m l Qua r t z Purp le 5 ml d i o r i t e

Q u a r t z d i o r i t e -50% magnet i te , 4 g r . s c h e e l i t e , + 70 g r . z i r con , 1 i t t l e p y r i t e

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0 LO

m

C

LL LO

Y

h

3 w 'I-

n

w w t't' 'F S F

C, L 0 % c CL 0, m v, E s

F

s? m 1- L

I Cn

n o L C, 0 v, a. -u

s " a aJ ln C, r 171 w r d A L -7

a-0

a, Y U 9 s; rd L w

3 0 - 7

al >

- LO LO

0

0 In

LO

0 m

m

CV LL LO

N h

a, C, a#-

t' a c [I, m

3 a, S F - L 2 2 . C

-0z)

ou

-s h E- m s ln 0

w C, c- .I- -r LL ln

u 0) L a, > 0 U

I it93 I= L-r 0 C n r - w L w . r "r-

C n Y Cn .r L

ln w C, m L C, C w 0 c 0 0

*-, m 0 - LL

Y aJ w L U

A U 0 L -0 aJ M

E 0 'P 4 U m aJ N

aJ > X U 0

t--

E

i - a o w s .r C 0 u OC,

r: n a

,

v- a, w C C Y m o u LCI m a m 3

.F

z

C r.

C h

.C U.

- - C

0 ' .r C LLZ

aJ C

a c 5 c cnz

n. m C zz

n

aJ t' -0- aJ C, C, aJ .r != L 0 z, m Q

aJ MI- LD C,

C, 0 .r I -

b ' E " a , m c C , 2 s-ru aJ L O N d C , Ln %.I- I ij9r- L

LOP- 0 h e I ~n

m aJ C, m L C, E aJ U C 0 0

C, m 0 7

LL

Y aJ aJ L 0

-2 U 0 L 73 a, a

E 0

L .r 0 C, - v 0 (d 0 a,

crt

aJ > x -0 U

P

E

m -I- .I- P

E L N r ( l h w? a*

LO L O . O w 2 0 L

* N m 0 I 0 I P I C U

z 0- a

8% Lr- 0,l- s! .r ?

" 0, aJ L +I A m " v aJ m -C,

52.E m o m LC, L L l I m 0 ,

'I- - - L

0 r

r: N

m - mr-

aJ aJ m c Y L O u m C ,

Ik I

IS m .r 0 L L Z

CU P

P* E m 0 m z

n m o T Z

u & S P (d s m o m

0 % El- m c m o m g g ;

m o a L C , L a m t n

.r $2 a,--. C (U E a r rC1aJom L L C , L t3 Cnm m

'a-

a, I= ma, 5 t' E .r L

a, h - !a C,

- u I Q IU

-0 " Y aJ C a,.c L Kit' "Sn V) .r

I " ' C U N a J t ' C , CU 't- CT Ll- Cn- &?

m a r C\I a, P, In Y L U r u a J 5 -4'

5 2 'E 5 0 5 Lt' L (3 V) m

I

2 -A,; L ln at' maJ a,- "t' L

a, 5 Cnae GI- "CU .t- V) aJ In - "0

c a ' s L "a, ma, a,

t' V) 'I-

' c U V) n

a, s 0 C,

' ul

- . " C a, a,

C u 5 S C Y L O O u m u t'

n n

a, a, Y t' U -r aJ m - C ) 3 ? .r b-r K R¶ mru L L L a l u m

n

a, a, Y "C, U U ' r at'- ?,*E z 5 r u O L L L a m a

"t' L a r m 2 t'r- - a, . r a,

v-Y S C m u 5 0 L m LC,

3 mul

- a , . r a, s t - Y t C m u 5 0 L 5 LC, < 3 mV)

L L n m m

aJ C, C L C .P 0 7 + I n n aJ a J F a J C "C, C, m s .I- * .r K l O L a J L I

2 2s 2U Mar *F 0 aJ O N L W U W h OaJl-.I- I s ? r K l C , 08-0 u-L1: Kl \D 1 C f n U C

c, aJ a, 5 "C, a, E 'I- K l O L

E 2 2 M .r 0 N co i I s m O C h l *

aJ *I- r .I- C N U m f n ' 5 M L E m . m

u s w o m C O O L I * C n 00 h I *

"t a,

& L O U N rd "In*.'

g g E 5 rd 0 CUM LC, L C U L S I I h r n I

I-- ~ . r a, -8-Y C C m u Kl 0 L ld LC, = l 3 mv,

TABLE I

Results of Analyses

Map Sample No. No.*

Fig. PPM CX No. Cu Pb Zn Mo Ni ml dye

Color Reaction Bedrock Creek Float Concentrates

Red 4 ml Covered Slate, shale, 40-50% magnet i te , Purple 4 rnl graywacke ,sand- -0.05% zircon

stone ,green- stone,di key-2%qtz.

Pink 15 ml Covered Graywacke ,slate, 50-60% magneti te , Purple +5 ml argill ite -0.05 zircon

Pink 2 ml Covered Graywacke ,slate, None noted Purple +18ml argi 1 1 i te

Pink 2 ml Covered Graywacke ,di ke, 30-40% maqneti te, Purple 4 ml argillite, -1% scheeli te Bl ue-gray 2ml shale 2 gr. pyrite

Blank Covered Graywacke,shale, Sediments scarce, argi 11 i te no conceptrates

noted.

Pink 10 ml Meta- Graywacke,shale, 60-70% magnetite, Purple 10 ml sediments argilli te -1% zircon, 1 gr.

chalcopyrite, 7 gr. pyrite

Pink 2 ml Covered Graywacke,shale, 5-10% magnetite,20-30% Purple 10 ml argillite,dike, zircon, 1 gr.scheelite, Bl ue-gray 2ml -2% qtz. 1 gr. ilmenite

Pink 2 ml Graywacke, Graywacke,green- 5-10% magnetite,lO-15% Bl ue-gray 5ml argi 1 1 i te stone ,argi 11 i te zi rcon , 1 gr. scheel i te ,

1 gr. ilmenite

Purple 4 ml Covered Graywacke,slate, 5-10% magnetite, Bl ue-gray 2ml argi 1 1 i te ,green- -0.05% zircon

stone, dike

TABLE I

Results of Analyses

Map Sample Fig . PPM CX Color No. No.* No. Cu Pb Zn --- P1o N i ml dye Reaction Bedrock Creek Float Concentrates

109 6F202 6 50 15 115 2 2 Purple 1 ml Covered S l a t e ,shale ,gray- 40-50% magnetite, Pink 1 ml wacke ,greenstone, -1 % zircon

d ~ k e , + 1% qtz . 110 6F207 6 35 10 100 1 4 P i n k 1 ml Covered S l a t e ,shale,gray- 1-5% magneti te,2-3%

Purple 3 ml wa~ke~greens tone , zircon,3 gr.chalco- dike,? 5% qtz . pyri t e , 4 gr . pyri t e ,

5 gr. s chee l i t e

7 P i n k 1 ml Covered Graywacke,shale, 70-80%rnagnetite,+ Purple 6 ml argi 11 i t e 1% zircon, 5 g r .

pyr i t e

6 P i n k 1 ml Covered Graywacke,shale, 70-80% magnetite,0.05% Purple 5 ml s l a t e ,green- z i rcon

stone ,dike , -2%q t z .

113 6F12 6 60 20 - 140 2 2 P i n k 1 ml Graywacke, Graywacke ,shale, 60-70% magnetite, Purple 1 ml & shale a r g i l l i te,green- 5-10% pyri te,-0.05%

stone,-2% qtz . zircon, -2gr. gold

114 6Fll 6 40 15 - 170 4 11 P i n k 1 ml Graywacke Graywacke ,green- 70-80% magnetite, Red 1 ml stone ,argi 11 i t e , -0.05% z i rcon Bluegray In1 g ran i te

115 SF10 6 50 20 115 4 2 Purple 1 rnl Graywacke, Graywacke ,green- 55-65% magnetite, Bl ue-gray 1 ml argi 11 i t e stone ,argi 11 i t e 2-3%pyri t e , 5-1 0%

zi rcon, 1 gr . c i nnabar

116 6F9 7 25 10 90 - 5 1 Bl ue-gray Covered Graywacke ,green- 60-70% magneti t e , s tone ,a rg i l l i t e -0.05% pyr i t e

117 5F148 7 50 15 105 3 60 3 Purple Covered Argi 11 i t e ,gray- -0.5% magnetite, wacke,slate, 16 gr. zircon, dike ,greens tone l i t t l e pyr i t e

n

aJ C,

n n .r tlJ aJ aJ C, +' C, -C, aJ .r aJ -r aJ aJ .I- S C,C, +'t' +JL m a, .r a, .r .I- >, 5 r L c L C , € 0 D ? m h aJ C, a n m a . r

=""I 4 . E 5 L

t-C, I-C, * C,

0.r &: 5 5 5 '2 I 1 1 % LLa

c, r w o m E U E: enL aJ rC1 .r - E N la

0

I * m 00 h I f -

n

aJ Y 'I-

U, m a ,

aaJc Y U O U -8- C, m - V)

5: z 5 maJ L L L ' s l a m

.r L P ? C U a J a, YC, Y U -r U a- la 3-aJ

c 5s la m o la m L LC) Ll- C I J l a V I C 3 V )

Results of Analyses

Map No.

Fig. P PM CX Color - ---- Ho. Cu Pb Zn !/lo ;.Ji ml dye Reaction Bedrock Creek Float --------- Concentrates

8 20 5 70 4 50 3 P i n k 1 ml Covered Argi 11 i te ,gray- -1% magnetite, Purple 1 rnl wacke ,sands tone, 20 g r . z i rcon , 61 ue-gray 1 nl greenstone ,di key 1 i t t l e py r i t e

-2% q tz .

3 30 10 110 35 0 Blank Covered Graywacke , s 1 a t e No heavy minerals

3 35 10 100 3 65 4 P i n k 1 rnl Covered Argi 11 i t e ,gray- No heavy mineral s Purple 2 rnl wacke,sandstone, Blue-gray 1 ml greens tone ,d i ke ,

-22 qtz .

8 35 15 80 2 65 0 Blank Covered Graywacke , s l a t e , -1% magnetite, a r g i l l i t e , sha le , l i t t l e py r i t e sandstone ,grani te , greenstone

Covered Graywacke & -5% magnetite s l a t e 10 g r . zircon

l i t t l e py r i t e

8 45 10 105 4 3 P i n k 1 ml Covered Graywacke,green- no concentrates Purple 2 ml s tone , a rg i l l i t e noted

8 40 15 110 4 3 P i n k 1 ml Covered Graywacke ,green- no concentrates Purple 2 ml s t o n e , a r g i l l i t e notea

8 35 15 90 3 4 P i n k 2 m'i Covered Graywacke ,green- 70-80% magneti t e , Purple 2 ml s tone ,argi 11 i t e -1% zi rcon, 8 g r s

py r i t e , 3 grs . ga 1 ena

8 35 90 100 - 3 50 11 Red 1 ml Covered Graywacke,slate, -1 % magnetite, Purple 10 ml a r g i l l i t e , s h a l e , l i t t l e py r i t e

sandstone ,grani te , greens tone

n . r n n n n n n aJaa aJaJ - aJ a, aJ

N + W Y + * a ) G Q Y L -m C, rb 'r .r .r Y a *r- -F CS)aJ I CT r-r-U r- 7 .P r - cU "C,

a3 4 4 a -3 V)? VI F -0 W ? aJ .r H I - * h a r n n Q t W

a, a~ w a cucu w ma, a, ma, ma, . Y Y Y Y Y I Y L S N Y L t N Y L C N - L O U U v U 0 u a o C , U r d O C , v a o u w n m w rrj a a a a -+J 0- a 0- " V)

Pa, 3 a J 3 a J m a~ a~ r P - u b e w - Y a ,

ma c a m m a L LI- L F L- Ll- LTrd L C a L C a x a L a m a m CLSW a m a m C.!SVIV)+l a V ) V ) + i C 3 V ) V I + l w 3 m

7 r- E -

Ed- ca L

C J Q) 0: - I Y e. aJ C S - 3 .r 3 r- e a m

s 0

aJ U aJ C, LC,

n

w e C, aJ ctlY - .I- l n u

n

aJ I 7 u m s QJ T ctlw 2 ln -r

" C w a J Q ) m r Y M L O U . r OC, mr- " ln

5: 2 5 m c n o L Lc, L a m V ) c n

a w s 2 - 0 U .r C, f a 7 ln 3 - c h.r aJ m maJ L L L a a m

ul a, V) >1 r- Id

2 't- o ul -1-, F 3 V) aJ Cr:

aJ aJ 4 -v .C .I-

C, L aJ >, t Q m ca aJ E y +'

b i C, C .r

f l -

aJ G I Y - I - h-t- s r d V m L " L cnaJ y "C, aJ M aJ Cr -C, 0 ln w "F

V) aJl- U Y *I- r U m m M L W 3 r a

n

aJ I - - "

M aJ C C, ln *I- " s

aJMaJ c L Y o m u w " M l n U 3 UC, X E l d m rdl- L C n l n o ,

" I a J c c a J N ra a J C , c L 0-

"l?= aJ a J N a+' I U .r MI- " 3:r. aJ S,.I- c rcl rno L LC, a fe ln

I-- Y .r ln U V aJ

"C, a -r a,-I- t-- 5;r r f e i a O M 2z LC, L v, r r m cn

o irr t:: d L) n m

aJ .F C, L 'I- t' 2 QJ a 0 EI CC,U O+)O.I-? m U L m

.g H N 0 9 .

m e L L I M cnm

0 I 7i-Nd-N

G m a, c - lnc m o w E gC,

.I-

s. .I- P

O N a J h Q) I a-4 r 0- U W I V )

(A - " *.I- Q)

a c n r Y L O N U m u u

a, aJN XC, l U .r rbr- - 3l- a, =-,*I- r fd tno L LC, c' a m

02 C ?

LL. m

P F LL LL. u3 CD

a, C, r- C, a, E: C tno m U E L

i, r.r aJ 0- E U Q J CnL aJ m .r x E N S Xb? mu) h O L I -0, Lno w I F -

n

aJ C,

n *.,- a J a J s a

M C r d N iu 0 LC, FC, ?cl- V) V) "a a , S P

a r r- Y r d O U v r C , +I 5 " V )

52 5 (U" m fu QJY L-C L-r C ! V) m u

n

aJ C,

n m . r

a J w r * t m N m 0 Lt' -C, ?u V) V) n u a,&?

aJ C El- Y t e O OV)+ '+ I

F aJ a, cd m a J Y L S L.r

V) m u

a, C, .? aJ C, C, aJ .r s L 0% m Q

aJ M I - mC,

C, 0 .r

1 -

aJ I c

=-> 0 a C, L V) m s " aJ

aJ a, .4J L z C, - a, .r 2 m u

fc" s a, C, . P - - ' r 07 L

-=c

C - E El-

U) aJ 7

Y a s L .r 3 a a

to

CI d-

ml

0 h

a CI

C LO

Cr) C

I a, 7 J C, t.r " rat- 01 V)?Y

fi .c .r aJ O"TJ, Y L . U a a J N a -w+' % E.z 5' m 0 6 B e LC, Ll- C L I V I E T I

a Y U 6 3 2, rd L C!

C

E F LC: E -

r-- aJ 7

r e EI L .r 3 a a

E Ti-

b s cns rd 0

2 34 .I- 0 N CO I H 0- h I

&-?M m m L C O O Cn

?R '0-e a m C O O I 0 0 h I

I I 73 C r a J l a a J N V) LC, "Y" aJ C, as? laY-

aJ t: C a J " O a J W C, LC,

V) - .r .C -u

2E ' - U m w g g $ (d 0 m LC, L C" V) Cr:

z s a J m lu E: I-LO V) mC,

aJ aJ QJ F C C m o o Ti-.+' C n l n V )

Y 0. n C L W L

a r Y a J 3 naca

TABLE I

Results of Analyses

Map Sample Fig. PPil CX Color [\lo. F P b - T - ilo N i ml d y e Reaction No- !.lo.* Bearock Creek Float ---- Concentrates -

205 6F176 13 40 15 110 2 2 Purple Shale, Shale , s l a t e , 80-90% magnetite s l a t e grani t e , + l % q t z * -1% zircon

206 6F177 13 30 15 95 4 6 P i n k 3ml Shale Shale & 70-80% magnetite Purple 3 ml argi 11 i t e -0.05% zi rcon

207 6F178 13 55 20 - 130 1 +20 P i n k 3 MI Shale Sha le , s l a te , 80-90% magnetite Purple greenstone -0.05% zi rcon +17 iiil

208 5F126 14 20 5 55 2 40 8 Pink 71x1 Covered Graywacke ,dike, -1% magnetite Purple lml argi l l i t e ,grani t e 4 g r . zircon,

-2% qtz . 1 i t t l e pyr i t e I

2 209 5F127 14 25 10 90 3 55 +20 Pink +20ml Covered Graywacke ,di ke, -1 % niagneti t e I

argi 11 i t e ,grani t e 1 i t t l e pyr i t e -2% qtz .

210 5F124 14 35 15 105 2 70 15 Pink 5 ml Covered Argi 11 i t e ,gray- -1 ?i magnetite Purple 1Oml wacke , d i ke, a gr . zircon

greenstone l i t t l e py r i t e

21 1 56128 14 30 10 7 G 3 40 +20 Pink 3 ml Covered Argi 11 i t e ,gray- -1% magnetite Purple l?nl wacke ,di key 16 gr . zircon

greenstone l i t t l e pyr i t e

212 5F129 14 25 10 65 3 35 +20 P i n k 2 ml Covered Argi 11 i t e ,gray- -1% magnetite Purple 13ml wacke ,sandstone, 1 i t t l e py r i t e

greenstone ,di ke

213 5F130 14 20 10 65 3 35 12 Purp'le Covered Argi 11 i t e ,gray- Contaminated, wacke,sandstone, discarded greens tone ,dike

214 5F131 14 20 15 80 3 50 1 P u r ~ l e Covered S l a t e ,graywacke , -1 % magnetite sandstone ,green- 1 i t t l e pyri t e e-+fi,.,-$ .4:Izr.

aJ aJ t' C, .I- .I- C, L aJ h r n 0, 6 aJ El- C,

M U I-- 'F I C

n

F 'I- I d--

n 1

aJ aJ 24 C, U .r

z: aJ %.r r 6 0 0 L L W m a w