101
330848*8318 63.4113 BOSTON 010 /3V TEST REPORT CONCENTRATION OF MAGNETITE WET DRUM MAGNETIC SEPARATION FOR MARSHALL MINERALS RR #82-253 MAGNETICS CENTRAL TEST LABORATORY Asbury Road at Airport, Erie, PA 16515, U.S.A. Tel. 814/833-9881 Telex 91-4470

OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 1: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

330848*8318 63.4113 BOSTON 010

/3V

TEST REPORT

CONCENTRATION OF MAGNETITE WET DRUM MAGNETIC SEPARATION

FORMARSHALL MINERALS

RR #82-253

MAGNETICS

CENTRAL TEST LABORATORYAsbury Road at Airport, Erie, PA 16515, U.S.A.

Tel. 814/833-9881 Telex 91-4470

Page 2: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

ERIEZ MAGNETICS AFFILIATES

ERIEZ MAGNETICS JAPAN CO., LTD.No 11-8 1 -Chome, Kita-Kojiya.

Ohta-Ku, Tokyo 144, Japan

OUIPAMENTOS MAGNETtCOS do BRASILRua 16 de Novembro, 411Sao Paulo 04709. Brasil

ERIEZ MAGNETICS PTY. LIMITED6-8 Malua Street, P.O. Box 79

Reservoir, Victoria 3073, Australia

ERIEZ OF CANADA. LTD.1330akdaleRoad

Downsview, {Toronto), Canada

ERIEZ MAGNETICS - UKWilson Industrial Estate

Caerphilly Mid-Glam CF8 3EDWales. United Kingdom

ERIEZ EQUIPOS MAGNETICOS, S.A.Av. Ejerclto Nacional No. 752

Mexico 5, D.F., Mexico

ERIEZ MAGNETICS SOUTH AFRICA (PTY.) LTD.P.O. Box 391281

Bramley. Transvaal 2018, South Africa

Page 3: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

CONCENTRATION OF MAGNETITE BY WET DRUM MAGNETIC SEPARATION

FORMARSHALL MINERALS

RR #82-253

ERIEZ ERIE, PENNSYLVANIA

Page 4: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

32D84SW83I* 63.4)13 BOSTON 010C

CONTENTS

1.0 TITLE

2.0 INTRODUCTION

2. l Objective

2.2 Sample

2.3 Equipment Used

3.0 TEST PROCEDURES

3.1 Small Samples

3.2 Large Samples

4.0 EVALUATION

4.1 Assay

4.2 Results

5.0 RECOMMENDATIONS

Figure #1 — FLOWSHEET

Figure #2 — METALLURGICAL RESULTS

Figure #3 — METALLURGICAL RESULTS

Figure #4 — FLOWSHEET

Page 5: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

J-86A

Central Test Laboratory

REPORT OF TESTi MAGNETICS,

Date: AUGUST 13. 1982 Research Request:

Test Made For: MARSHALL MINERALS

Address

City NIAGARA FALLS State NEW YORK

1.0 TITLE: Concentration of Magnetite by Wet Drum Magnetic Separation.

2.0 INTRODUCTION: Marshall Minerals owns the rights to a high grademagnetite ore body next to the Jones 6 Laughiin Adams Mine. Marshall Minerals intends to get into production quickly by entering the heavy media market. Later, while the initial investment is being recovered, they can explore the possibility of expanding into the specialty grade concentrate market.

2.1 Objective ~ To determine the minimum cleaning requirements to produce an acceptable heavy media concentrate. Secondarily, to produce bulk concentrates for sample distribution.

2.2 Sample — Two drums of ground magnetite ore were received. One drum had been ground dry, the other had been ground wet. Both samples were about 90% minus 325 mesh. Davis Tube testing of the samples showed that the dry sample was 633 magnetics and that the upper part of the wet sample was 341 magnetics.

2.3 Equipment Used — Eriez Laboratory Wet Drum, Model L-8Eriez Davis Tube Tester

3.0 TEST PROCEDURES:

3.1 Small Samples

About 1 kg each of the wet and dry samples were passed twice through

Page 6: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

MARSHALL MINERALS RR #82-253 PACE TWO

the laboratory wet drum using a magnetics repass scheme. A flowsheet for each test is given in Figure #1. Wet drum field strengths were ad justed to 500 gauss High Gradient Equivalent for all passes. Feed to the wet drums were maintained at approximately 101 solids. A small portion of the first pass magnetics were scooped from the bucket just prior to the second pass. This was to provide a rough measure of the first pass improvements. All products were then filtered, dried, weighed and split for various assays.

3.2 Large SamplesAbout 100 (bs. of the dry sample was processed through a double pass wet drum flowsheet as shown in the upper part of Figure #4. A flowrate of 6 CPM was set. The solids content fluctuated, but averaged about 221. No sample was taken after the first pass. All products were allowed to settle and then were decanted, dried and weighed. A portion of the final magnetics was split out for assays.

The remainder of the wet and dry samples were processed through the same flowsheet as before. The feed rate was again 6 CPM, but the solids content was lowered, probably to around 181. Sample handling was as in the 100 Ib. sample, with the exception that Davis Tube assays were per formed on each product. The weight splits are given in the flowsheet in the lower part of Figure #4.

4.0 EVALUATION

4.1 Assay

Samples were sent to Microbac Laboratories Inc., Erie Testing Laboratory Division, for chemical analyses. A copy of their Certificate of Analysis is attached to this report.

Davis Tube (DT) assays for magnetics were performed by Eriez personnel,

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MARSHALL MINERALS RR #82-253 PACE THREE

Magnetic iron (Mag Fe) is calculated by multiplying the DT magnetics

percentage times the iron assay for that magnetic product. For

example, sample (113) assayed 91.08?, DT magnetics. The DT magnetics

assayed 71.094 Fe (113 DT from the certificate); therefore the product,

66.91, is the Mag Fe.

4.2 Results

The dry sample assayed 631 DT Mag, 451 Fe and 441 Mag Fe. A single

pass on the wet drum upgraded the product to 801 DT Mag, (calculated),

611 Fe and 57fc Mag Fe. The DT assay was rushed and weighed while

still slightly wet. Therefore this value was recalculated from the balance

sheet. The second pass improved the product even more to 941 DT mag,

661 Fe and 671 Mag Fe. Although the wet sample showed an even higher

ratio of concentration, it was felt that the sample was non-representative

inasmuch as the sample was taken from the top two inches of the drum.

Metallurgical Balance Sheets for the two tests were calculated and given

in Figures 2 and 3. These balances show that while only 7W to 911 of

the iron units were recovered, 981 of the magnetics and 991 of the mag

netic iron were recovered. A similar balance on the large sample would

show that nearly 991 of the DT magnetic units were recovered.

The large samples showed a slightly lower percentage of DT magnetics

than the small samples. This was probably due to the carry-over of clays

at the higher solids percentages used in the large tests.

Crushing coarse ore to approximately -10 mesh for microscopic observation

shows a rough liberation at 50 to 100 mesh. Cleaning at a coarser grind,

a standard iron-range practice, may improve the results obtained at 901

minus 325 mesh. Good liberation still requires grinding at least -270 mesh,

Page 8: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

MARSHALL MINERALS RR #82-253 PACE FOUR

5.0 RECOMMENDATIONS: This sample upgrades to a high quality heavy

media magnetite quite readily in a two-pass finisher drum circuit. To

process 2000 LTPD at 151 solids, (2216 CPM) requires about 20 feet of double wet drums.

Joseph WernhamMineral Processing Engineer

JW/jaj

Page 9: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

MARSHALL MINERALS RK #82-253 FIGURE in

FLOWSHEET

Dry Sample

\l

\

Magnetic (111)76.32 Wt, 79.62 DT Mag (Gale )6l.08X.Pe. 56.7X Mag Fe

Wet Drum 300 gauss

r Wet Drum 500 gauss

Magnetic (113)64.42 Wt, 94.082 DT Mag66.262 Fe, 66.92 Mag Fe

Wet Sample

Wet Drum 500 gauss

iMagnetic (211) 42.742 Wt, 82.63* DT Mag 57.532 Fe, 57.72 Mag Fe

Wet Drum 500 gauss

Magnetic (213)

Wti 95 - 42X DTFe, 65.9X Mag Fe

- Feed (100)

63.0% DT Mae 44.952 Fe, 43.5* Mag Fe

Non-Magnetic (112) 23.7X Wt, 2.08X DT Mag IC.33% Fe, 0.6402 Mag Fe

Non-Magnetic (114) H.92 Wt, 4.842 DT Mag 10.942 Fe, 1.582 Mag Fe

-Feed (200)

34.842 DT Mag 33.862 Fe, 23.442 Mag Fe

lNon-Magnetic (212) 57.262 Wt, 0.932 DT Mag 9.642 Fe, 0.3482 Mag Fe

l Non-Magnetic (214)7.622 Wt, 0.022 DT Mag9.572 Fe, 1.162 Mag Fe (est.)

Page 10: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

RR 82-283 FIG. *2

PERCENT ASSAY* ASSAY* ASSAY* UNfTS FRACTION WEIGHT OT HAG FE MAC ft DT MAC

METALLURGICAL RESULTS

UNITS UNITS X DISTRIBUTION t DISTRIBUTION X DISTRIBUTION FE MAG fi DT MAC FE HAG FE

NMAG 11? 23,70 2. 880 10.3X8 0.640 0.4030 2,4482 0,1517 0,80

NMAG 114 11.00 4,840)0.040 1.680 0.5760 1.3018 0.1060 0.03

HAG 113 64.40 04.080 66.260 66.680 60.5678 42.87)4 43.0707 08.27

8,?7

2.60

01.02

0.35

0.4S

60.22

CALC. HEAD 100.00 61.6564 46.4215 43.4104 100.00 100.00 100.00

ASSAYED HEAD 63.00 44.05 43.92

Page 11: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

ft* 82-283

PERCENT ASSAY* ASSAY* AS8AV* f PACT J ON VEJCHT QT MAG Ft MAC FE

METALLURGICAL RESULTS

UN ne UNITSOT HAG FE

UNITS X DISTRIBUTION X DISTRIBUTION * DISTRIBUTION NAC FE DT MAC FE HAC FE

NMAG 212 87,25 0.030 O.B46 0,348 B.5325 5.SIM 0,1063 1.56

NflAC 2H 7,62 0.020 9.B7C 1.156 0.0C!5 9.7202 8,0995 0.00

MAC 213 35,12 05.420 66.410 65.016 33.5115 23.3232 23.1407 06.43

18.67

2.47

78.87

B. 85

0.38

08.77

CALC. HEAD 34.0455 20.5723 23.4371 100.00 100.80

ASSAYED HEAD 34.84 33.86 23.44

Page 12: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

MARSHALL MINERALS RR 082-253 FIGURE 14 FLOWSHEET

Dry Sample -100 Ib.

Magnetic (311) 77.862 Wt.

6 GPM, "22!?: solids

Non-Magnetic (312) 22.142 Wt.

Magnetic (313)67.282 Wt.64.292 Fe, 92.22 DT Mag

Non-Magnetic (314) 10.57* Wt.

Wet St Dry Samples ~775 Ibs.

6 GPM, ~182 solids

Non-Magnetic (411) 26.142 Wt. 1.92 DT Mag

Magnetic (414) 66.012 Wt. 92.92 DT Mag

Non-Magnetic (413) 7.852 Wt. 2.72 DT Mag

Page 13: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

!

MICROBAC LABORATORIES, INC.ERIE TESTING LABORATORY DIVISION2401 West 26th Street, Erie, Pennsylvania 16506814/833-4790

AIR * FUEL * WATER * FOOD * WASTES

Eriez Magnetics Asbury Road Airport Brie, PA 16505

Attention: Joe Wernham

Date Reported: August 3, 1982 Date Received: July 14, 1982 Sample No.: 195-267, 214-03093

CERTIFICATE OF ANALYSIS

Subject: Samples for total Iron by fusion.

101 DT 69.3056, 68.8696, Av. 69.0896111 DT 71.2356112 DT 30.7696113 DT 71.0996114 DT 32.5896201 DT 67.2896211 DT 69.8696212 DT 37.3996213 DT 69.0896

RR# 82-253

100111112114200211212214113

213313

44.959661.089610.339610.949633.869657.5396

9.64969.5796

66.1696, 66.3596AV.66.419664.2996

66.2696

Assay samples 113, 213, and 313 for the following:

Acid soluble ironTotal iron (fusion)SodiumPotassiumCaOMgoA12O3P205ManganeseSulfurTi02Si02

Signed

lil 213 313

65.299666 . 26960.0089640. 001960.084960.05096cC0.08960.04960.080960,0496^.07965.1696

65.329666.41960.00596tO. 002560.070960.05096^.08960.03960.080960.0596^.07964.9496

62.959664.29960.00996tO. 001560.098960,06696c;0.08960.04960.081960.05960. 07966.9996

Laboratories serving Pennsylvania. Ohio, New York, West Virginia, Indiana. Maryland and Kentucky USDA-EPA-NIOSH testing * FoodSanitation Consulting * Chemical and Microbiological Analyses and Research

Page 14: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

BOORUM I PEASE COMPANY

ft i

MADE IN U.S.*.

Aar&ertf

Nn. 57107

Page 15: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

'- S- C-

b3.4-n332D84SW8318 63.4113 BOSTON 020

r Magnetic Iron Ore Grinding land Concentration Tests

Marshall Minerals Corporation Niagara Fa l Is, Ontario Final Report

tORF Investigation No. 752^5

ONTARIORESEDRchFOUNDATION

J

Page 16: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Magnetic Iron Ore Grinding and Concentration Tests

Marshall Minerals Corporation Niagara Falls, OntarioFinal ReportORF Investigation No. 75245

J. MELNBARDIS V.I. LAKSHMANAN DEPARTMENT OF ENGINEERING AND METALLURGY

August 31, 1982

ONTARIORESEHRckFOUNDATION

SHERIDAN PARK RESEARCH COMMUNITY

MISSISSAUGA, ONTARIO. CANADA L5K 1B3 .(416)822-4111 . TELEX 06-982311

WE. THE ONTARIO RESEARCH FOUNDATION. STIPULATE THAT THIS DOCUMENT IS SUBJECT TO THE FOLLOWING TERMS AND CONDITIONS:1 ANV PROPOSAL CONTAINED HEREIN WAS PREPARED FOR THE CONSIDERATION OF THE ADDRESSEE ONLY ITS CONTENTS MAY NOT BE USED BY NOR DISCLOSED TO

ANY OTHER PARTY WITHOUT OUR PRIOR WRITTEN CONSENT.2 ANY TESTING. INSPECTION OR INVESTIGATION PERFORMED BY US WILL BE CONDUCTED IN ACCORDANCE WITH NORMAL PROFESSIONAL STANDARDS NEITHER WE

NOR OUR EMPLOYEES SHALL BE RESPONSIBLE FOR ANY LOSS OH DAMAGE RESULTING DIRECTLY OR INDIRECTLY FROM ANY DEFAULT. ERROR OR OMISSION3 ANY REPORT. PROPOSAL OR QUOTATION PREPARED BY US REFERS ONLY TO THE PARTICULAR MATERIAL. INSTRUMENT OF! OTHER SUBJECT REFERRED TO IN IT. NO

REPRESENTATION IS MADE THAT SIMILAR ARTICLES WILL BE OF LIKE QUALITY.i NO REPORT ISSUED BY US SHALL BE PUBLISHED IN WHOLE OR IN PART WITHOUT OUR PRIOR WRITTEN CONSENT6 OUR NAME SHALL NOT BE USED IN ANY WAY IN CONNECTION WITH THE SALE. OFFER OR ADVERTISEMENT OF ANV ARTICLE. PROCESS OR SERVICE. 6 WE RESERVE THE RIGHT NOT TO COMMENCE AND/OR CONTINUE ANY WORK UNTIL PAYMENT ARRANGEMENTS SATISFACTORY TO US ARE ESTABLISHED.

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32D04SW0318 63.4113 BOSTON

INTRODUCTION

2. SUMMARY

020C

Page Number

l

l

3. TEST PROCEDURE AND RESULTS

3.1 Head Sample Data

3.2 Grinding

3-3 Magnetic and Flotation Concentration

TABLES:

Table l

Table II

Table 111

Head Sample Analyses

X-ray Assay Laboratories Certificate of Analysis

Concentration Results Davis Tube Results

Figure l : Grinding Flowsheet

Figure 2 : Bench Test Flowsheet

2

2

2

3

6

7

8

9

10

Page 18: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Magnetic Iron Ore Grinding'and Concentration Test

Marshall Minerals Corp.

Final Report

ORF Investigation No. 75245

1. INTRODUCTION

Based upon the discussions held between Mr. William Marshall, of

Marshall Minerals and O.R.F. staff, a 500 kg bulk sample of magnetic

iron ore was shipped by Marshall Minerals to O.R.F. in June, 1982.

The primary objective of the test program was to produce ground products

at 80 and 90^ minus 325 mesh size for magnetic concentrations at Eriez

Magnetics, Erie, Pa.

This report describes the results obtained from grinding and bench scale

flotation test work to upgrade the magnetic concentrates.

2. SUMMARY

The head sample of the ore received assayed 46.9^ total iron, 23.9^

silica, A.9% manganese, 3.9^ lime and Q.\% titania.

The required 80^ minus 325 mesh size product was produced by dry grinding

the crushed product at 6 mesh, using 0.6 m diameter x 0.2 m Hardinge ball

mill with 1?0 mesh Sweco 0.75 m diameter screen.

The finer product at 90^ minus 325 mesh was produced by wet grinding in

a closed circuit having a 200 mesh opening DSM Rapifine Screen.

At the completion of grinding 2 x 220 kg lots of wet (90S minus 325

mesh) and dry (80& minus 325 mesh) ground materials were shipped to Eriez

Magnetics.

Bench scale Davis tube test to upgrade a feed containing kk.1% magnetic

iron indicated 98.7^ recovery to a concentrate assaying 68.7^ acid soluble

iron. The concentrate contained 2.5^ Si02 and Q.7% MgO.

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Magnetic Iron Ore Grindingand Concentration TestMarshall MineralsFinal ReportORF Investigation No, 752*45

. 2 -

Further upgrading of the magnetic concentrates by flotation based on

a limited number of tests was inconclusive. The results indicated that

a low level of selectivity was attained in the removal of the residual

gangue to flotation froth.

A concentrate assaying 70. 8^ acid soluble iron was produced in a

preliminary flotation test, but the rejects then carried more than

23^ of the magnetic concentrate weight that accounted for 32. 5^ of the

iron in the feed. In subsequent tests w-ith less weight and iron values

removed as froth, the flotation concentrates assayed lower (68.9 -

acid soluble iron. The magnetic iron recovery was less than

Hence it is recommended that further tests may be carried out to

establish optimum conditions to produce higher grade concentrate.

3. TEST PROCEDURE AND RESULTS

3.1 Head Sample Data

The total 500 kg bulk sample received was first crushed to minus 6 mesh

size using 20 x 35 cm and 8 x 1 1 cm jaw crushers and a 20 cm di'ameter

rolls crusher.

A representative head sample was split out by coning, quaterlng and

riffling. The results of assay and semi-quantitative spectrograph! c

analyses are shown in Tables l and II.

3.2 Grinding

The required 80 and 90S minus 325 mesh size products were produced as

shown in the flowsheet (Figure 1).

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Magnetic Iron Ore Grindingand Concentration TestMarshall MineralsFinal ReportORF Investigation No. 752^5

- 3 -

(1) The coarser product was obtained by dry batch grinding

80 kg lots of the -6 mesh feed in a 0.6 m dia. x 0.2 m

Hardinge ball mill. The mill product was screened on

170 mesh Sweco 0.75 diameter screen. The oversize

fraction was included with the subsequent mill feed batch.

(2) Since dry screening at a finer mesh size did not appear

feasible, the same mill was used for continuous wet

grinding in closed circuit with a 7^y opening DSM Rapifine

screen to produce the finer product.

The samples of the two products showed the following structures:

Screen Mesh

200

325-325

TOTAL

Product Weight %Dry Ground

3.617.079. A

100.0

Wet Ground

1.0

9. l*89.6

100.0

3-3 Magnetic and Flotation Concentration

Samples of both the dry and wet ground materials were concentrated using

a laboratory 20 x 10 cm Sala permanent magnet separator. A Davis tube

test was also done on the wet ground material.

Page 21: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Magnetic Iron Ore Grindingand Concentration TestMarshall MineralsFinal ReportORF Investigation No. 752*15

Further tests were carried out on the Sala magnetic concentrates to

try and upgrade them by flotation of the still unliberated middling

fraction. The flowsheet is shown in Figure 2.

As can be seen from the results shown in Table III the Davis Tube

concentrate as produced from the finer (90& -325 mesh) feed assayed

68.7^ acid soluble iron and Q.66% magnesia (MgO) and accounted for

98.7^ of the feed acid soluble iron content with Bk.25% weight recovery.

The MgO assays indicate that more than 92^ of the feed magnesia content

was rejected to tailings.

Similar magnetic iron recoveries but lower grades were attained with

the Sala separator after 2 passes (the concentrates of the first pass

were fed through for a second pass). The lower than Davis Tube concen

trate grades indicate that less than complete dispersion and washing of

the feed pulp was obtained during the two separation stages.

The role of flotation process to upgrade magnetic iron concentrates is

to remove any middling fraction (still unliberated grains of minerals and

gangue) that is sufficiently magnetic to be carried with the magnetic

concentrate.

The flotation reagents used were Sherex Arosurf MG 98A a cationic silica

collector at 0.058 - 0.086 kg per ton (1,000 kg) of original feed ( or

0.095 - 0.13*4 kg/ton flotation feed) and Shell methylfsolbutyl carbinol

frother. ^ . .... . ..-..By observation the flotation response appeared sluggish and the

concentrate grades produced were low. The samples assayed from 68.9

to 70.8^ acid soluble iron.

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J l

Magnetic Iron Ore Grindingand Concentration TestMarshal l MineralsFinal ReportORF Investigation No. 752^5

1

l

- 5 -

As can be seen in Table lil the amounts removed to flotation froth

varied from 7.** to 23.71 (90* -325 mesh feed) and 9.1* (80* -325 mesh

feed) by weight of original feed. The froths rejected assayed from

50,6 to 59.0^ acid soluble iron that accounted for up to 32.52 of the

iron distribution.

The relatively high iron content of the flotation froth and the fact

that the MgO level, in comparison with the Davis Tube concentrate

was not lowered (0.661 MgO Davis Tube vs. 0.65* MgO in flotation concen

trate of the same feed) is an indication of low flotation selectivity

attained in the removal of residual gangue. It is most probable that the

poor flotation response is due to the impurities being very finely

disseminated and contained within a large fraction of the magnetic

mineralization.

Another less probable reason may be that the silica flotation collector

reagent used is not the best suited one for this application since

the gangue constituents appear to be magnesium silicates rather than

just silica. To investigate other reagents would require a number of

additional tests to be carried out.

V. l. Lakshmanan, Ph.D.ManagerMineral Processing andHydrometallurgy GroupsDepartment of Engineeringand Metallurgy

J. Melnbardis Senior Technologist Department of Engineering and Metallurgy

VIL JM:aac

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Marshall Minerals Corp.Final ReportORP Investigation No. 752^5

- 6 -

TABLE l

HEAD SAMPLE ANALYSES

Const i tuent

l ron Fe

Silica SiCL

Alumina ALO-

Calcium CaO

Magnesia MgO

Alkali Na2 0

Manganese MnO

Titania Ti02

Phosphorous P2 0-

Chrome ^r-O-

Loss on ignition

46.9

23.9

0.33

3.89

k.3k

0.59

0.09

0.17

0.10

0.15

0.01

-1.23 (gain)

Page 24: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

- l -

TABLE l lX-RAY ASSAY LABORATORIES LJKITED

1885 LESLIE STREET, DON KILLS* ONTARIO ^38 3J4

PHONE 416-445-5755 TELEX C6-S86947

CERTIFICATE OF ANALYSIS

REPORT 15123 REF. FILE 10376-A3

TO: CNTAR1C RESEARCH FOUNDATION ATTH: ALDC MARASCIQ SHERIDAN PARK M1SSISSAUGA, ONTARIO L5K 1B3 t, PULPS PC* 16271

07-JUL-82

CUSTOKE

DATE SUBMITTED 28-JUN-82

ELEMENT SENS* ELEMENT SENS*

ANTIMONYARSENICacKYLLIUK6ISMU-THCADMIUMCERIL'HNIOBIUMCHROMIUMCCbALTCOPPERGALLIUMGERKANIUKIRONLEADLITHIUM

(4)(4)(2)(2)(4)(5)(4)(4)(3)(1)(2)(1)(2)(2)(4)

45-H

NDNDNONDNDNONDNDNOFTFTNDHFTND

45-H

MANGANESEMERCURYPOLYSCcNoVNICKELSILVERTANTALUMTHORIUMTINTITANIUMTUNGSTENURANIUMVANADIUMYTTRIUMZINCZIRCONIUM

(1(4(3(1(1(5(3(2(Z(413(2(314(4

1 L1 ND

FTFTNONDNCFTTNDNDFTNDTNC

LEGEND

KEY TO SYMBOLS

H -MH -

K -LM -

10* PLUS5-15*1-10*0.5-5*

LTL

TFT

0.1-1* 0.05-0.53, 0.01-0.IX 0.01* OR LESS

ND - NOT DETECTED

^SENSITIVITY (LIMIT OF DETECTION)

1 - O.COOS-L.^Oi*2 - 0.001-0.0^5^3 - 0.005-0.Oil4 - O.01-0.05*5 - 0.05-0.1*

NOTE BETTER IF AND

SENSITIVITIES WHEN REQUIRED

CAN BE OBTAINED WITH SPECIAL TSCHNKUES,

Page 25: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

TABLE ) \ l

CONCENTRATION RESULTS

FEED PRODUCT Weight

Davis tube magnetic concentrateDavis tube tailingsWet Ground 90fc -325 mesh feed

Magnet

Dry Ground feed (80^ -325 mesh)Magnetic separation (Sala) tailingsMagnetic concentrateFlotation froth (middlings)Flotation underflow concentrate

Wet ground feed (903 -325 mesh)

Magnetic separation (Sala) tailingsMagnetic concentrationFlotation froth (middlings)Flotation concentrate

Dry ground 9Qfy -325 meshMagnetic separation (Sala) tailingsMagnetic concentratesFlotation froth (middlings)Flotation concentrates

64.2535.75100.00

le and

Weight

100.038.261.89.1

52.7

100.0

35.664.47.4

57.0100.036.563.523.739.5

Davis Tube Results

* Assay 1Acid sol .Fe

68.701.57

**4.yFlotation Concentrat

* Acid Sol. Fe ,. Assay ^ .

42.02.5

66.451.069.1

43.92.5

67.150.668.9

43.02.3

66.459.070.8

Mgd

0.6613.855.3^Ion Results

blst.X

100.02.3

97.711.086.7

100.0

2.098.08.7

89.3100.02.098.032.565.5

Distribution *Ac 1 d sol. Fe Mgo

98.7 7.81.3 92.2

100.0 100.0

Assay 3SI02 TI02 MgO

2.55 0.05

2.65 0.04 0.65

CO

l

Page 26: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Fig.

- 9 -

GRINDING FLOWSHEET

Ore Sample (500 kg lot)

Jaw crusher

20 x 25 cm and 8x11 cm s i ze

T6 Mesh Screen

Underslze

-*-Ove r s i ?.

l20 cm dia.

RolIs Crusher

Cone, Quarter and Riffle

Ball Mill Feed

Dry 80 kg Batch

l

0.6m dia. x 0.2 mHardinge Mill

180 kg 3.8 cm balls

Head Sample

Water

0.6 m dia. x 0.2 mHardinge' Mil 1

180 kg 3.8 cm balls

Ove rs i ze

Batch Discharge

0. 75 m Sweco Screen 170 Mesh

lUndersize

80* - 325 Mesh Product f

Discharge

1.2 x 0.3 m DSM Rap! fine Screen

opening

— Undersize 90* - 325 Mesh

Product

Oversize

200 L Drum To Ship

Samples T

200 L Drum To Ship j

Decant Excess

** Water

Page 27: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Fig. 2- 10 -

BENCH TEST FLOWSHEET

Flotation Reagents

Ground Feed

20 x 10 cm Sala Magnetic Separator

1st Pass Concentrate

20 x 10 cm Sala Magnetic Separator

Concentrate

TWemco Lab

Flotation Cell

Underflow Concentrate

Tail ings

Froth (Middling)

To be retreated separately or recycled back to primary ci rcuit.

Page 28: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

ONTARIORESEBRchFOUNDATION

ENERqyenergy conservation programs and analysis, thermal insulation design and evaluation, waste heat recovery, building energy systems and monitoring, heat storage systems, thermoelectric generation, combustion technology, burner development, heat transfer analysis, solar systems monitoring, National Solar Test Facility, solar technology, wind power, coal and lignite processing, alternate fuel utilization, battery technology, energy and chemicals from biomass,...

ENVIRONMENT

ambient air quality assessment, source sampling, odour emission and control, asbestos measurement and control, pesticide residues, trace metal analysis, trace organic analysis, mutagenic testing, occupational health surveys and assessments, water surveys, water purification, municipal and industrial waste water treatment processes, membrane separation techniques, wet oxidation, diese! emission control technology, solid waste treatment and recovery, noise and vibration analysis, environmental impact assessments, long-range transport of atmospheric pollutants, radiation measure ments, particulate identification and measurement, ergonomics and industrial design, air pollution control technology, hazardous and toxic materials and waste control,...

MATERJAls

building materials, plastics, coatings and composites, metals, glass and ceramics, wood and wood composites, biomaterials, adhesives and printing inks, yarns, fabrics and geotextiles, leather, organic and inorganic chemicals, specialty formulations, specification development, 1 quality control, mechanical chemical and thermal properties, test method development, failure analysis, fire and flammability, glass-metal seals, metal and alloy powders, metallography, materials characterization by electron microscopy and X-ray microanalysis, photovoltaics and ionic conductors, corrosion properties and control, rubber technology, energy radiography, non-destructive testing, X-ray analysis, cement and concrete, gypsum,...

pRoducTS B PROCESSESpulp and paper products, clothing, footwear and industrial textile products, knitting technology, thin and thick film systems, electronic devices, microcomputer systems and applications, fibre optics, electronic design, bioengineering, ultrasonic and fluid shear devices, microwave drying, transportation and equipment testing, mathematical stress and vibration analysis, product, equipment and machinery design and development, fuel emulsification, chemistry of foodstuffs, pulping and papermaking processes, ceramics processing, metallurgical process development, powder metal technology, packaging applications, technical and economic evaluations, industrial engineering applications, electroplating, radioactive decontamination, process control, biotechnology, industrial microbiology, enzyme analysis, cryogenics, electrical testing,...

RESOURCES

mineral processing, hydro and pyrometallurgical processing of ferrous and non-ferrous ores, coal evaluation and processing, asbestos processing and applications, uranium processing, forest utilization, utilization of forest and agricultural wastes, utilization of industrial mining and domestic wastes, energy and chemicals from biomass, non-metallic minerals,...

Page 29: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

^ x-v^V77 &/-S- -S?/

SWASTIKA LABORATORIES l .IMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

TKLtPHONE: (705)6423244 ANALYTICAL CHEMISTS* ASSAYS RS * CONSULTANTS

(totifintte of Analysts

Certificate No.

Received Ma r. 26/82

Submitted by Marshall Mineral3487 P o;? 'i /j c

SAMPLE NO.

825-1

-2

-3

-4

-5

5

s Ltd. ,

GOLDOz./ton

Nil

Nil

Nil

Nil

Nil

Samples of

Niagara Falls^W,of*U

SILVEROz./Lon

0.01

0.01

Nil

Trace

0.01

........Sp.]

, Ontario^' .

COPPERPPM

128

168

73

107

336

i t. core

Att'n: Mr. W. Marshall

ZINCPPM

44

22

13

20

68

I'or

ESTABLISHED 1928

G. l obel

Page 30: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

"

STIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

TELEPHONE: (705)642-3244 ANALYTICAL CHEMISTS * ASSAYERS* CONSULTANTS

gfcrttftrat? nf Analysis

Certificate No. ^^^ 53181 ^ ...,.......,... Bate: ..^prlLlJJL82___ ____ -

Received Mar. 24/82 ^ 7 Samples of ....... .SJ)lj..Lc.0re.

Submitted by Marshal 1 Mineral s Ltd. 5 N

SAMPLE NO.

824-1-2

-3

-4

-5

-6

-7

GOLD Oz./ton

0.002

Nil

Nil

Nil

0.002

Nil

Nil

iatjara Fall

SILVER Oz./tor.

Trace

0.01

Trace

Nil

Nil

0.01

Trace

s,. .Ontario

COPPER PPM

70

245

281..-.

177

202

71

- --. AU. 1 rii llr, .JL. MarsJifl J 1

ZINC PPM

84

1700

810--.

236

364

225

ESTABLISHED 1928

f lPer . ,....^..'.iJ...

G. Lebel - Manager

Page 31: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

TELEPHONE: (705) 642-3244 ANALYTICAL CHEMISTS * ASSAYERS * CONSULTANTS

(Eprttfirate of Analynis

Certificate No...^ 53.149.. ..... ^ .^ Date: ^ ...__ ___^

Received Mar, ] 8/8.2., ....... . ..A........^_ Samples of ,^^ ^ Sp! .lt,Co.re___ _ __... ..--

Submitted by 'Marshall Minorals, Niagara falls, Ontano - Att'n: j^r^ W v HarshajJ_

LE NO.

-1

-2

-3

-4

-5

-6

GOLD Oz./ton

NilNil0.002NilNilNil

SILVER 02. /ton0.020.010.01NilNil0.01

COPPER PPM131188

526048

219

ZINC PPM

11001200472102

74421

G. Lebel - Manag

ESTABLISHED 1928

Page 32: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

TELEPHONE: (705)6423244 ANALYTICAL CHEMISTS* ASSAY h RS * CONSULTANTS

nf Ami l y BIB

Certificate No.... .531 27...... , .. . ..... ......... . ^ Date: .....March. 22 1982-.........-—. — .--

Received.... Ma r. 15/8 2. . 13 ...^, Sainj)les of ^ .....Split. Core

Submitted by Marshal l Minerals 3 J\liagara. fa]Js,-.Q.n.tar.ip .....M.tlJ3.LJ1ii.-.WJ...MarsJia].l-..-.--.-

SAMPLE NO.

822-1

2

3

4

5

6

7

3

9

10

11

12

13

GOLD Oz./ton

0.002

0.002

Nil

Nil

NilNil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

SILVER Oz./ton

0.03

0.01

0.01

0.01

Trace

Trace

Trace

Trace

0.01

Trace

Trace

Nil

0.01

COPPER PPM

61

69

84

59

50

39

6061

87

100

90

71

247

ZINC LEAD PPM PPM

2100 1200

150

382

1100 702

78

67

105

68

129

41

129

548786

Per

ESTABLISHED 1928G. Lebel - Manager

Page 33: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

TFLLPHONE: (705)642-3244 ANALYTICAL CHEMISTS * ASSAYERS * CONSULTANTS

(Eertiftrate nf

Certificate No. ^ .....53124 .^^...........^^.... Rate: .....m.J4axclL-lSLJ.9.82_____.-

Received Mar. 15/82 .^......16.......... Samples of Jjpjj.tjcone,....^ ,_...^...^_ ___

Submitted by Ma r s ha l J.. Miner a Is 3 Niagara, Fa 11 Sj , Onta r j o,. ____ At t '.PL. Mr.. H. Marshall_^

SAMPLE NO.

8?E3-1-2

-3

-3

-4

-5

-6

-7

-8

821-8A-9

-10

-n-12

GOLD ./ton

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

SILVER O?../ton

Nil

3.03

0.01

0.01

0.01

Trace

TraceTrace

Trace0,010.010.040.030.010.010.01

COPPER PPM

16639

113

87

56

80

89

144

110

10?

310

160

198

647

128

LEAD PPM

41

198

88

85

61

70

101

230

282

140

430

850

310

188

320

ZINC PPM

38

13000

Per ^s VJ i i^xvrvT-L. G. Lebel - Manager

ESTABLISHED 1928

Page 34: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1 TO

TELEPHONE- (705) 642 3244 ANALYTICAL CHEMISTS* ASSAYERS* CONSULTANTS

Qkrttfirat? nf Analyma

Certificate No. , . ^ .5.3.077.. . . ) ^^- ,.. March. .9 19.8.2 ^ ____

Received Mar.4/82 9 Samples of Split Core

Submitted by Marshal"

SAMPLE NO.

82E1-1

-2

-3

-4

-5~- ' 82E2-1 ' "

-2

-3

-4

1 Minerals,

GOLDOz./ton

Nil

Nil

Nil

Nil

Nil

Nil -

Nil

Nil

Nil

Niagara Fa"

SILVEROz./ton

0.01

0.02

0.02

0.01

Trace

0.02 '

0.02

0.10

0.09

Us, Ontari(

COPPERPPM

459

387

414

386

432'890

766

1250

361

) Per:

LEADPPM

61

123

40

47

3358"

69

840

1020

C. Marshall

ZINCPPM

517 a'3400 i 1

287 4 i

122 3-5'

266 g '

4100 tt'

3400 9-5^

1100 51

2100 /4-'

Per

~N

y fx^.

G. lebel - MananerESTABLISHED 1928

Page 35: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

'K SWASTIKA LABORATORIES LIMITEDP O. BOX 10, SWASTIKA ONTARIO POK 1 TO

ft L! PI ION! :70 r .) ti4?-3244 ANALYTICAL CHFMIS1 S * ASSAYE RS * CONSULTANTS

(Eprltfiratr nf Analysis

.lr No. 53305 Dal,-: May 12 1982

Received ^ May 11/82 4 s.-miplrs of s p l i t ,core ^ ^ ^ ^ .,.. --

Submitted by Marshall Minerals Limited, Niagara Falls, Ontario ^t'n:^ Mr^ W.^MarshaJl

SAMPLE NO.

82H4-1-2

-3

-4

GOLD Oz./ton

NilNilNil

Nil

SILVER Oz./ton

0.020.02

0.020.01

COPPER PPM

771202200

259

ZINC PPM109

4973

142

LEAD PPM

19970

186

501

Per

fS-/ '

G. Lebel - ManagerESTABLISHED 1928

Page 36: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITEDP.O. BOX 10, SWASTIKA, ONTARIO POK 1TO

l ELK P! IONS: (70b) G42 3244 ANALYTICAL CHEMISTS* ASSAYLRS * CONSULTANTS

tif irate nf Attalgma'

fVrtificatc No. ....5.3317.... . . Dato: May J 8 .198.2..

Rrcdved May 13 1982 2 Samples of .... spl H.^ore^^^^^^^^

Submitted by Marshall Minerals Limited^ Niagara Falls, Ontario^

SAMPLE NO.

H4-9

H4-10

GOLD Oz./ton

Nil

Nil

SILVER Oz./ton

0.01

0.03

COPPER PPM

680

501

LEAD PPM

190

2200

•ZINC PPM

413

8600

IV rG. Lebel - Manager

ESTABLISHED 1928

Page 37: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

SWASTIKA LABORATORIES LIMITI-DP.O. BOX 10, SWASTIKA, ONTARIO POK 1 TO

TELEPHONE: 1705) 642 3244 ANALYTICAL CHEMISTS* ASSAYERS * CONSULTANTS

(Emiftratr nf Attalymu

Certificate No. 53310 ^ Date:

Received.. May .1.2/82 ..

Submitted by Marshal

SAMPLE

Hl-1

-2

-3-4

-4A-5-6

H4-5

-6

-7-8

.....,. .11..

1 Minerals Ltd.,

NO. GOLD Oz./ton

NilNil

NilNilNil

NilNilNilNil

NilNil

Samples of

Niagara Falls,

SILVER Oz./ton

0.030.040.020.810.030.010.020.02

0.04

0.010.02

. ..— - sp li

Ontario

COPPER PPM

579952428

15000

1200310

475230392

282330

t core.

Att'r

LEAD PPM

2978

2021600

112

4045

1600

4600268

1100

\: Mr. W. Marshall

ZINC PPM

321128

6053100

25963

1283500

17000850

3000

Per

ESTABLISHED 1928

G. Lebel - Manager

Page 38: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

330048*8318 63.4113 BOSTON 030

Summary Report

on

Diamond Drill Program

for

MARSHALL MINERALS CORPORATION

Boston Township Property

Kirkland Lake Area

Ontario

Frank P. Tagliamonte, P. Eng.

GEOLOGICAL ENGINEERING SERVICES NORTH BAY, Ontario

April 1983

Page 39: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Property

Marshall Minerals Corporation Boston township property Larder Lake Mining Division Kirkland Lake Area Ontario

Description

Location

Access

1+1+ contiguous claims.NWest quadrant of Boston township.2 patented.ifl leased.1 staked.

Boston township.NWest quadrant.Immediately North of Adams Mine.Adjacent and East of Dane townsite.9 miles South of Kirkland Lake.

Highway #650 (Adams Mine Road) runs SEasterly adjacent to South boundary of claim group starting from Dane townsite. Hamlet of Dane located 9 miles South of Kirk land Lake on highway #112. Several bush and diamond drill roads lead into portions of the property from highway #650.

TAP.ograph

Rock ridges separated by small lakes, bogsand gravel knolls.Central portion of property traversed by gen-

Page 40: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

History

erally N-S trending Boston Creek. Elevations would not likely exceed 100'.

Forest cover comprises spruce, balsam and scattered poplar and birch.

Exploration work in the Boston township area where the Marshall claims are located pro ceeded intermittently over a period of many years under a variety of prospector owners. Most of this work was concerned with iron exploration.

Dominion Gulf worked the area during the 1950's.

From about 1964 to the present, exploration work such as trenching, geophysical surveying and diamond drilling have been carried out in termittently guided by a variety of engineers and consultants on the Marshall claims now held by Marshall Minerals Corporation. This latter work was concerned with iron, and base metal ex ploration.

Geology

The claims are underlain by Precambrian rockscomprising Basic and Intermediate volcanics- mainly basalt, andesite, dacite and somerhyolite.The volcanics have been intruded by Syenitesof the Lebel Syenite Stock.Locally, diorite and metadiorite as well asdiabase, mafic dykes, and feldspar porphyryintrude the Syenites and volcanics.

Tuffaceous rocks containing sulphides - pyrite, pyrrhotite; and oxides - magnetite}are intercal ated with the volcanic units.

Bands of high grade magnetite iron formation as well as copper, zinc and silver-bearing sul phides are localized in the volcanic units. Some of the trenching done on the property ex pose mineralized occurrences containing these minerals.

Page 41: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Diamond Drill Program

Period: March - May 1982.

11 holes - 2558'

1) 82E series - 3 holes 748'

2) 82 series - k holes 1239 1

3) 82H series - 4 holes 571'

Purpose of Diamond Drill Program

1) Test some VLF and max-min EM anomalies:

DDK's #82-1, #82-2, #82-3, #82-4, #82H-1.

2) Undercut mineralization indicated in surface trenches:

DDK's #82H-2, #H-3, #82E-3, #82-5.

3) Cross-section mineralized shear or fault structures:

DDK's #82E-1, #E-2.

Diamond Drill Results

1) 82E Series

Anomalous copper, lead, zinc values (ppm) obtained in mineralized graphitic and cherty tuffs.

Best value:DDK #82E-3 - 8" S 3.03 oz Ag, 1.3* zinc.

2) 82 Series

Anomalous copper, lead, zinc values (ppm) obtained in sulphide-bearing cherty and graphitic tuffs.

Best values:DDK 82-1 -3.5' / 647 PPm Cu.DDK 82-2 - 5 f 7 2100 ppm Pb.

Page 42: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

4-

DDH #82-^ - ^.5' X 1700 ppm Zn.

3) 82H Series

Base metal values obtained in mineralized diorite and mineralized certy tuff.

Best values:DDH #82H-1 - T X .81 oz Ag, 1.551} Cu, 16# Pb., .31^ Zn.DDH #82H-4 - 9' 7 .0/f oz Ag, ,04# Cu,

^ Pb., 1.7# Zn.

Conclusions

Sulphide-bearing tuffs in the property contain anomalous values in base metals. These tuffaceous horizons respond to geophysics and are consequently traceable on the ground in most instances.Areas where base metal enrichment above average background are indicated may warrant further drill testing.A zone of chlorite enrichment in DDH #82-5 in dicates a locus for possible base metal depos ition warranting exploration investigations. Areas for future exploration consideration in dicated as a result of the current drill pro gram are:

1) DDH #82E-2 area.2) DDH //82E-3 8c 82-5 area.3) DDH #82H-1 fc 82H-4 area.

(1300 1 length of VLF conductor has not been completed investigation).

,Reconm)endationB

Correlate all previous exploration work prior to carrying out further exploration investigations. Proceed with exploration investigations as pri orities and metal markets conditions indicate.

Data Attached (9x15 envelope)

Duplicate set of;

Page 43: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

DDK logs and sections - 11 DDH plans -2 Assay sheets - 9 Legend,sheet - l Claim Group Plan - l

Respectfully submitted,

F^ahk'P."Tag5lafi^rite, P. Eng. April 1983^--

GEOLGOCIAL ENGINEERING SERVICES NORTH BAY, Ontario

Page 44: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 45: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

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Page 46: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

GEOLOGICAL ENGINEERING SERVICES. 29 BEAVER CRESCENT. NORTH BAY, ONTARIO

Page 47: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO.

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Page 48: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 50: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 51: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

GEOLOGICAL ENGINEERING SERVICES. 29 BEAVER CRESCENT. NORTH BAY, ONTARIO

Page 52: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 53: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 55: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 56: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

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Page 57: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 58: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 59: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

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Page 60: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 62: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagiiamonte, p. Eng.

GEOLOGICAL ENGINEERING SERVICES. 29 BEAVER CRESCENT. NORTH BAY. ONTARIO

Page 63: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

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Page 64: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 67: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. .PAGE^

FOOTAGEFROM TO

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Page 68: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO.. -PAGE,

SAMPLE NO.

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Page 69: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 70: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

- /- (T-/ 3V

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Page 71: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

GEOLOGICAL ENGINEERING SERVICES. 29 BEAVER CRESCENT, NORTH BAY, ONTARII

Page 72: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagiiamonte, p. Eng.

D.D.H. NO. KJL "C PAGE

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Page 73: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. PAGE 75"FOOTAOE

FROM TODESCRIPTION SAMPLE

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FOOTAGE

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Page 74: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. .PAGE. s.SAMPLE

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Page 75: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 76: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 77: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. Ot".) PAGE C X

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Page 78: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. ft L. C^ PAGE

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Page 79: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 80: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 81: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

O.D.H. NO. o(oH\ PAGE

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Page 82: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

D.D.H. NO. .PAGE.

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Page 83: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

3.D.H. NO. QMH \ PAGE

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Page 84: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Frank P. Tagliamonte, p. Eng.

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Page 85: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 86: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 87: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 88: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 89: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 90: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 91: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 92: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 93: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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Page 94: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

32D84SW831 9 63.4113 BOSTON

August 10, 1982

CONFIDENTIAL

Mr. W. MarshallPresidentMarshall Minerals Corporation3487 Portage RoadNiagara Falls, Ontario L2J 2K5CANADA

Dear Mr. Marshall:

This letter reports results of research conducted on one sample of processed magnetite identified as follows:

Marshall Magnetite Sample No. l Assigned BCR No. 5497

The sample was delivered in good condition to Bituminous Coal Research, Inc., by Mr. Alex Powell. Examination of the as-received material showed several light-colored agglomerates that easily separated when brushed on a fine screen.

As shown in the summary data presented as Table l, the sample was fine in size, containing only 3.5 percent by weight coarser than 74 microns ^200 mesh). The minus 44 microns (O25 mesh) material represented 66.9 percent by weight of the as-received sample and showed a normal distribution around the 15 x 20 micron range. Specific gravity analyses of the as-received magnetite and selected separates showed the following:

Specific Gravity Analyses

As-received Sample (100.0 percent) - 4.64

Minus 44 microns (O25 mesh) (68.9 percent) -4.60

2.95 Sink Fraction (99.7 percent) - 4.65Total Magnetics (98.1 percent) - 4.89

Total magnetics were determined using magnetic attraction in an aqueous solution. The average of duplicate test runs showed 98.1 percent of the feed material to be strongly magnetic.

Page 95: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

Mr. W. Marshall, President - 2 - August 10, 1982 ^Marshall Minerals Corporation

Analyses of the elemental ash, using atomic emission methodology, showed 76.8 percent Fe 30j, (87.9 percent normalized) with only 7.13 percent S102 (8.16 percent normalized) as the principal contaminant. Plans to analyze the beneflciated 2.95 sink separate have been necessarily delayed due to inoperative equipment. These data will be forwarded as they become available.

In summary, this magnetite represents one of the purest magnetite products ever analyzed at BCR. Fully 98.1 percent of the material was actively magnetic showing a specific gravity of 4.89. Further beneficia tion using gravity methods proved essentially non-productive since ^9 per cent of the feed sample reported to the 2.95 sink fraction.

Yours truly,

R. G. Moses Manager, Petrography

RGM:blf 'Attachment2823

cc: Mr. Alex Powell22402 Thomson DriveMt. Clemens, Michigan 48043

Page 96: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

32D04S*e3ie 63.4113 BOSTON 050

. August 25, 1982

CONFIDENTIAL

Mr. W. Marshall, President Marshall Minerals Corporation 3487 Portage Road Niagara Falls, Ontario CANADA L2J 2K5

Dear Mr. Marshall: ;

This letter supplements our letter of August 10, 1982 which forwarded data characterizing,one sample of magnetite designated as Marshall Magnetite Sample No. l (BCR No. 5497).

New information details ash composition analyses on the bene- ficiated 2.95 sink fraction of this magnetite.

This evaluation showed a minor discrepancy in the standard used to calibrate the atomic emission apparatus. This slightly modified the elemental analysis of the reported "as-received" material.

As shown in the modified Table l, washing at a 2.95 gravity level occasioned some reduction in silica but nothing of great signifi cance. Since recovery represented 99.7 percent of the total sample, little deviation in composition was expected.

Yours truly,

R. G. Moses Manager, Petrography

RGM:blfEnclosure2823

cc: Alex Powell

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TABLE 1. SUMMARY DATA CHARACTERIZING MARSHALL MAGNETITE SAMPLE NO. l(BCR No. 5497)

Size Consist, As-received

Plus 149 microns 149 x 74 microns 74 x 44 microns Minus 44 microns

(100 mesh) (200 mesh) (325 mesh) (325 mesh)

Percent, in sizetrace3.527.668.9

Coulter Counter Sizing — Minus 44 Microns (325 mesh)Percent^ in size

Plus 40 microns40 x 32 microns32 x 25.4 microns25.4 x 20.2 microns20.2 x 16.0 microns16.0 x 12.7 microns12.7 x 10.1 microns10.1 x 8.0 microns8.0 x 6.4 microns6.4 x 5.0 microns5.0 x 4.0 microns4.0 x 2.0 microns^.0 microns

3.1 *\3.96.6

10.110.910.28.1 ) 68.9 percent ^4 microns5.73.92.31.51.51.1 ^

Total Magnetics, percent by weight 98.1 percent (Specific Gravity - 4.89)

Specific Gravity, g/ccAs-received - 4.64 Minus 325 mesh - 4.60

Elemental Analysis, Percent by Weight of Ignited SampleAs-received

Si02 A120 3

MgO CaO Ti02 MnO

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87. 1. 1.

Na 20 K20 CI S0 3

.64

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5110

0.070.100.060.10

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Beneficiation Potential — 2.95 Gravity WashingFloat 2.95 Sink 2.95

Yield, percent 0.3 99.7 Specific Gravity — 4.65

l j

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316 63.4113

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Page 99: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

biTUMlNOUS COAL

LSEARCH, INC.

U3.4M3October 26, 1982

CONFIDENTIAL

Mr . Jerry HedicanMarshall Minerals Corporation137 Huron Heights DriveNewmarket, OntarioCANADA L3Y 476

Dear Mr. Hedican,

Thank you for telling us about your recent takeover of Marshall Minerals Corporation.

As requested during our telephone conversation of October 25, 1982, I am enclosing copies of the letter reports characterizing your magnetite deposit. Also included is a copy of our invoice which might possibly have been misplaced during the change over.

As you can see from the reports, your product appears exceptionally pure and should be well suited for heavy-media coal beneficiation.

Yours truly,

R. G. Moses, Manager Petrographic Research

RGM:blfEnclosures801S

350 Hochberg Road | P.O. Box 278, Monroevllle, PA 15146 | Phone (412) 327-1600

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Page 101: OM81-6-C-131 CONCENTRATION OF MAGNETITE WET DRUM …€¦ · assayed head 34.84 33.86 23.44. marshall minerals rr 082-253 figure 14 flowsheet dry sample -100 ib ... 7.852 wt. 2.72

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