SELF POTENTIAL SURVEY MAMAINSE MINE PROP MACDONNEL … · 4.7 This area along the shoreline of Lake...

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41N02SE0034 OP92-217 RYAN 010 REPORT SELF POTENTIAL SURVEY MAMAINSE MINE PROPERTY MCDONNEL MINING LOCATION BATCHAWANA ONTARIO Sault Ste. Marie Feb. l, 1993 JFP0193.R

Transcript of SELF POTENTIAL SURVEY MAMAINSE MINE PROP MACDONNEL … · 4.7 This area along the shoreline of Lake...

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41N02SE0034 OP92-217 RYAN 010

REPORTSELF POTENTIAL SURVEY

MAMAINSE MINE PROPERTY MCDONNEL MINING LOCATION

BATCHAWANA ONTARIO

Sault Ste. Marie Feb. l, 1993

JFP0193.R

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l41N02SE0034 OP92-217 RYAN O1OC

TABLE OF CONTENTS

1.0 SUMMARY AND RECOMMENDATIONS

2.0 INTRODUCTION

3.0 PROPERTY LOCATION, ACCESS AND LOCAL RESOURCES

4.0 OWNERSHIP AND TITLE

5.0 HISTORY

6.0 GEOLOGY

7.0 CURRENT WORK, SELF POTENTIAL SURVEY

8.O INTERPRETATION

9.0 CERTIFICATE

Fig. JFP 91-1 Location PlanFig. JFP 91-3 Self Potential Survey

Appendix A Description of Self Potential Method, after Dobrin, 1960

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REPORTSELF POTENTIAL SURVEY

MAMAINSE MINE PROPERTY MCDONNEL MINING LOCATION

BATCHAWANA ONTARIO

1.0 SUMMARY AND RECOMMENDATIONS

1.1 This report describes the results of a self-potential survey completed on the property of Mr. Jeffery F. Paquette during1992.

1.2 The S.P. survey located the apparent connection between the Lutz and Mamainse veins, with an indication of a parallel structure near the junction. Detailed prospecting and examination of the parallel structure is warranted.

1.3 The S.P. data from this survey are very noisy, so it is difficult to make detailed recommendations about other anaomalies. However, they should be investigated by conventional prospecting followed by trenching if warranted by the results of prospecting.

2.0 INTRODUCTION

2.1 This report is prepared at the request of Mr. Jeffery F. Paquette to summarise work completed on his property during the past year. It is intended to record the work done, and to serve as a report to meet the requirements of the Ontario Prospectors Assistance Grant.

2.2 The writer has inspected the subject property numerous times since 1970 for previous owners. This report is based on general knowledge of the area, and self potential survey data furnished by Mr. Paquette. No specific examination of the property was done by the writer in 1992.

3.0 PROPERTY LOCATION, ACCESS AND LOCAL RESOURCES

3.1 Figure JFP91-1 shows the property location and the claims owned by Mr. Paquette at the time of this work.

3.2 The property is located on the east shore of Lake Superior and is crossed by Ontario Hwy. 17. The nearest source of supplies is Sault Ste. Marie, about 60 miles to the south.

3.3 The claims are crossed by a transmission line of Great Lakes

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Report, Mamainse Point Property, Feb. 1993 page 2

Power Co. to the Coppercorp Mine, about l mile further south. Water is available from numerous small creeks or from Lake Superior.

3.4 The vegetation is a mixed St. Lawrence type forest, with maple, birch, spruce, cedar and poplar predominating. The mining rights do not include surface or forestry rights.

3.5 There is an abandoned mining plant, mill and tailings area on the adjacent Coppercorp Mine property, immediately to the south.

4.0 OWNERSHIP AND TITLE

4.1 The property consists of 17 unpatented mining claims, staked as single units. They are shown on Figure JFP91-1, and are numbered as follows

CLAIM NUMBERS RECORDING DATE

SSM. 1064144 TO 148 Jan. 16, 1989 SSM. 1078952 TO 1078954 Jan. 16, 1989 SSM. 1098967 TO 973 SSM. 1098975 SSM. 1099094

4.2 The claims are located in the District of Algoma in the Sault Ste. Marie Mining District of the Province of Ontario. They are within a pre-Confederation Mining Location comprising ten square miles, and not included in any formally defined township. This location is known as the A. McDonell Location of the Quebec and Lake Superior Mining Company. for administrative purposes the Ministry of Natural Resources and the Mining Recorder often include it with Ryan Township. The area is in the Soo North Planning Area and is subject to limited administrative zoning controls.

4.3 The claims are in NTS Area 41N/2.

4.4 The claims are unpatented mining claims held under the provisions of the Ontario Mining Act. Limited amounts of assessment work have been applied from work completed in previous years.

4.5 Belco Timber owns surface rights to these claims. The terms of severance by which surface rights passed from a prior owner of the former Mining Location clearly stated that the surface owner has no rights to stop, hinder nor demand compensation for mining work done. It is a legal question whether or not these rights of the miner survived the

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l 3 j /. L A - , . r. i. H -^ -J ' O f* S

l 2 j UAfic PUUTONS

KCWUNAV GP. vclccnic 6 IX

NEOHELIKIAN IGNEOUS ROCKS AND MINERAL DEPOSITS

ROY J. RUPERT CONSlJi.TING GEOLOGISTJEFFERY F. PAOUF.TTF. MAMAINSE POINT PROPERTY

PROPERTY A.ND L.OOA.TION

RJR, 1991-04-10 /ter.

JFP91-1

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Report, Mamainse Point Property, Feb. 1993 page 3

forfeiture of the mining rights of the Mining Location in the 1970's.

4.6 The claims are recorded in the name of Jeffery F. Paquette. Mr. Paquette advises that he has granted the following unrecorded interests in return for work done.

353; to Mark Lumme no others at this time

4.7 This area along the shoreline of Lake Superior and the Trans Canada Highway may require special consideration from an environmental point of view because of the need to protect Lake Superior, and because of its visibility to environmentalist activists.

5.0 HISTORY

5.1 The exploration and mining history of this area has been summarised in more detail in a previous report dated April 10, 1991. The following brief list covers key points.

Pre-historic

circa 1780

1842-48

1848-52

1882-84

1947-53

1955-72

1968-69

Pits and copper.

trenches by Native peoples for

Henry forProspecting and Mining by Alexander associates of the Northwest Company.

Mining Locations surveyed and developed for the Montreal Mining Company and the Quebec and Lake Superior Mining Association.

Shaft sinking, prospecting, some production.

3 shafts of Mamainse Mine to 60, 280 and 320 feet. Lutz adit at this time? poor records.

9 drill holes, geological mapping.

Adjacent Coppercorp Mine explored and developed, with some work in the area of the present Paquette claims. Most development and exploration on adjacent lands to the south where a producing mine and 500 tpd concentrator were operated.

14 drill holes on subject claims. Locations poorly documented.

1972 Coppercorp Mine closed and put on care and maintenance basis. Watchman on site to present time. Mining rights to subject property permitted

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Report, Mamainse Point Property, Feb. 1993 page 4

to forfeit for unpaid taxes.

1989-present Claims staked by JFPaquette. Prospecting, SP surveys and sampling completed.

6.0 GEOLOGY

6.1 Geology has been described in greater detail in prior reports. The interested reader is referred to a summary report dated April 10, 1991, and references cited there.

6.2 The claims are underlain by a homoclinal sequence of Neohelikian flood basalts and subordinate intervening conglomerates which dip westerly at about 20 to 30 degrees. These strata are intruded by stocks and subvolcanic intrusions of felsic rock of slightly younger age.

6.3 Copper occurs in veins or in fractured rock along faults which strike at about 160 degrees and dip steeply east. Mineralisation is found in all of the Neohelikian strata and intrusive rocks. It may be in discrete veins or in wide zones where sulphide minerals fill fractures and amygdules in basalts or conglomerate horizons. Mineralisation found to date appears to favour relatively competent basalts, rather than conglomerate horizons. Some veins are along the edges of basalt dykes in the faults.

6.4 Gangue minerals consist of rather sparse amounts of calcite, quartz, laumontite and fluorite. Metallic minerals include chalcocite, bornite, chalcopyrite, pyrite, native copper and native silver. Quantities of sulphide minerals are small, but may yield spectacular copper assays because chalcocite is the principal copper mineral. The copper minerals extend to considerable depth, and are clearly primary mineralisation rather than secondary surficial enrichment of other minerals.

6.5 Basalts in the area weather readily, and mineralised and fractured rock along fault structures can sometimes be trenched in weathered rock using hand tools. Exposure of these fault zones tends to be poor.

7.0 CURRENT WORK, 1992.

7.1 During 1992, Mr. Paquette hired assistants who completed self potential surveys on the claims, extending coverage by prior surveys in 1990 and 1991.

7.2 This work included

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20.88 km. of previously unreported linecutting 27.90 km. of SP surveying

7.3 Fig. JFP 91-3 shows the results of SP surveys completed on the property.

7.4 The work was done by several different field parties, with training by Mr. Paquette, who was unable to accompany them far into the field due to infirmity. Equipment may have suffered from some field repairs by inexperienced operators, including splicing of cables and electrode connections.

8.0 INTERPRETATION

8.1 Comparison of the results of the currrent survey with past results indicates that values of self potential measured tend to be higher and "noisier* than in previous surveys. This may be due to different weather conditions, inexperienced operators, poor connections, potentials created in the circuits, or poor electrode connections. On some lines, the travel directions and current direction conventions are not recorded .

8.2 Notwithstanding the above comment, the data do show clear patterns which correspond to known zones of mineralisation, and which indicate possible additional zones. However, the reader is cautioned against too much reliance on interpretation of absolute values between lines rather than relative values along lines. As always with surveys of this type, anomalous values or profiles on single lines without supporting evidence on adjacent lines should be viewed as possible noise.

8.3 Anomalies 'C' and 'O' from previous surveys have clearly been extended to the north from Line 8+50 S to line 3S. Anomaly 'C 1 is of particular interest because it probably was not tested by previous drilling in the 1950's.

8.4 The strike azimuth of anomalies 'C' and 'D 1 in this newly surveyed area is noticeably less than elsewhere. This condition is analogous to the D Zone of the Coppercorp Mine, both in dimensions and geometry. The D zone was a prolific part of the Coppercorp Mine. This area deserves special attention as it may represent a dilatant zone along the strike of the Lutz-Mamainse Vein structure.

8.5 Anomaly 'K' defined by this new survey is rather discontinuous, but may be a splay extension of the Mamainse Vein. This area should be investigated more closely.

8.6 Along the western tier of claims (SSM 198979 to 975), the

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new SP survey data indicates an area with numerous scattered and rather erratic results. Geologically, this area is underlain by a sequence with relatively thin (30 to 100 foot thick) flows and a higher proportion of interflow conglomerate beds with comparable thicknesses (5 to 60 feet). It appears likely that the rather chaotic SP results here are due to effects of stratigraphic features rather than mineralisation. It is difficult to interpret these data effectively.

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9.0 CERTIFICATE

The writer. Roy J. Rupert certifies that

My address and place of business is1496 Wellington St. EastSault Ste. Marie, ONP6A 2R1Ph. 705 946 8546

I am a professional engineer registered with the Association of Professional Engineers of Ontario. Registration no. 40084014.

I am a graduate of McGill University in 1966 with the degree M.Sc.(App) in the mineral exploration program.

I am a graduate of Queens University in 1963 with the degree B.Sc.(App) in Geological Engineering.

I have practised my profession as a geologist for 29 years.

I have prepared this report for Mr. J. F. Paquette.

I have no interest in the Mamainse Point Property.

Feb. l, 1993

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APPENDIX 9

DESCRIPTION OF THE SELF POTENTIAL SURVEYING METHOD

TO ACCOMPANY REPORT OF WORK ON MAMAINSE POINT PROPERTY MR. JEFFERY F. PAQUETTE

EXCERPTS FROM INTRODUCTION TO GEOPHYSICAT,

BY MILTON H. DOBRIN

MCPHAR GEOPHYSICS BROCHURE

JFP0406.R

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iit-lype tall dome in louWano. rd wctian. (Sinclair Oil and Cai Co.)

INTRODUCTION TO

GEOPHYSICAL PROSPECTING

MILTON B. DOBRIN

Triad Oil C". Llil. Cnlgary, Alherla, Canada

SECOND EDITION

.MrC.KAW-HIU. HOOK COMPANY. IXC'.

Now York Turonto Loiulcni

I'.HU)

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342 INTRODUCTION TO GEOPHYSICAL PROSPECTING

proportionality constant is t, the electrical susceptibility. The total elec trical flux per unit area (corresponding to magnetic flux density) is / ; -r \*P or (l 4- -lrt)K. The quantity (l + -Irt) is designated as K, the. diolci-tric constant.

This properly determines the effective capacitance of a rock material and consequently its static response to any applied electric field, cither direct or alternating. The dielectric constant of a vacuum is unity. For most hard rocks it ranges from about (i to 1(1 electrostatic units. For wet soils and clays it is somewhat greater than this, extending up to 40 or-'.O esll.

17-2. The Self-potential Method

The self-potential method involves measurement at the surface of elec tric potentials developed in the earth by electrochemical action between minerals and the solutions with which they arc in contact. No external electric fields arc needed with this technique. When different portions of an ore hody arc in contact with solutions of different composition, chemical reactions take place which result in different solution pressures along the respective areas of contact. The difference in solution pressure gives rise to a potential difference which causes current flow in the ground.

Sources of Potential. When :tn ore hody is responsible for a potential difference of this kind, it is most usually because of differential oxidation between one pan of the Wly and another. Often the unconsolidated for mations near the surface arc aeratetl to a much greater extent than in the zone below. An elongated vertical ore"body, say of pyrite, penetrating the aerated zone from the oxygon-deficient rocks below, would be oxidized near its top hut not along its bottom. Oxidation of the pyrite yields sul- furie acid, which is neutralized by carbonates adjoining the ore body. The solution of salts thus produced is in equilibrium with the pyrite at a different pressure and electric potential than is the solution in contact with the ore In-low the aerated zone. The difference in potential causes a current to flow IH-IWCOII l hi- upper and lower ends of the pyrite mass, and the return current through the ground (see Fig. 17-1) causes a potential anomaly measurable at the suiYare. The ore body can thus IK- detected at the surface from the negative potential associated with the oxidation reaction at the upper end.

While the strongest potentials of this kind are excited in ores such as pyrite.-;, a number of other mineral*, such as pyrrhotite and magnetite. Si ve rise lo -til-potential p;:::iTiis which are often observable on the surlisi-t-. Acoirilinsj In Kruster and Lacy.'' alunite was responsible for a 1.700-millivo'n potential anomaly ai (Vrro de Pasco in Peru. The polar ization was a':riluila(iie to free acid released iluriliii alunitization of the

ELECTRICAL PROSPECTING ME

country rock. As pointed do not exhibit anomalous p lions that inhibit oxidatio oxidation is virtually abscii

Spurious sources of potcit chemical action. Elcvatioi potential gradient) often c: may not lie possible to corn of global extent flowing thn differences which are soinet potentials.

Field Procedure and Int hundreds of millivolts in n

"g E200e -- too

Orft/iztX/ _region.

Rg. 17-1. Natural pole

porous electrodes. The po pairs of such electrodes m: arrangement, gradients are differences. Equipotential turning one electrode in fixe face for which no potential * blc probe.

The theory of interpretati since dipole potential field studies by Petrovski, 4 Stern Uitive techniques for intcrpi only when the polarized In: oilier simple geometrical fm

Self-potential surveys hav ous sulfide ore bodies at sha

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l GEOPHYSiCAl PROSPECTING

rrpliliililv The lnl:il clec-

i magnetir flux density! is

- \vt) is desijinaled as ^, l In'

applied dec; lie iicid, i-;;herof a vacuum is unity. For

;lcctrostatic uuit.s. Fur wetthis, extending up to -40 or

jmeiit at the surface of elec trochemical action between re in contact. No external \. When different portions is of different composition, different solution pressures flee -: in . solution pressure s r.il. .it Hou- in llie ground, s responsible tor a potential use of differential oxidation 'f t en the unconsolidated for- h greater extent than in the . say of pyrite, penetrating :ks liclow. would he oxiilixed t ion of the pyrite yields sul- es adjoining the ore l)ody. .iliriiini with the pyrite at a i is the solution in contact 'erence in potential causes a nds of the pyrite m:iss. and'ig. 17-1) causes a piitcnlialbody can thus he detected

-ociatcd with the oxidation

arc excited in ores such as pyrrhotite and magnetite.

c often observable on the unite was responsible for a Pasco in Peru. The polar- duriiig alunitization of the

ElECTRlCAl PROSPECTING METHODS 343

country rock. As pointed out by Mrant.- all near-surf arc sulfide bodies do not exhibit anomalous potentials, .since tln-rc arc many surface condi tions that inhibit oxidation. Beneath the waier table or permafrost, oxidation is virtually absent.

Sv'ir!--':-^ o Hirers of potential often ol..-e;nv i-jiWis oi ~ubsi;.-;.-n-e di-rtro- chcmieal action. Elevation changes (on account of normal aimo.-plieric potential gradient) often cause spurious potentials for which it may or may not bc possible to correct. Telluric currents (natural earth currents of global extent flowing through the earth's; crust) also result in potential differences which arc sometimes difficult to separate from electrochemical potentials.

Field Procedure and Interpretation. Self-potential anomalies, of i ei i hundreds of millivolts in magnitude, can be detected by nonpolarixing

."S s 300

J" E200

Di; lance

~ N Atry'fJ:sne \

y*-^ r-1- - \Vofer lotlel l '

-' ' :

fig. 17-1. Natural potential profile over uiMde body oxidized at top.

porous elect nxlcs. The potentials may l M.- measured along profiles with pairs of such electrodes maintained at uniform separation. With this arrangement, gradients arc usually mapped nit her than actual potential differences. E(|iiipotcntial lines are sometimes determined by main taining one electrode in fixed position and finding the line along the sur face for which no potential difference is observed IK.MWCCII it and a mova ble probe.

The theory of interpretation is quite similar to that for magnetic work, since di|Xilc potential fields arc involved in hot li cases. Theoretical studies by Pelrovski,* Stern/ de Witte,4 and Viingtil" have led lo quanti tative techniques for interpreting potential anomalies. These are useful only when the polarized body can be represented by a sphere or .-nine other simple geometrical form.

^elf-potential surveys have l n-en responsible for the discovery of numer ous sulfide ore lx)dies at shallow depths of burial. Several sulfide Ixidies

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344 INTRODUCTION TO GEOPHYSICAL PROSPECTING

have Itcen located at Noranda by this method, as was a copper body near Sherbrooke, Quclxic. Its possibilities have been investigated in other areas, .such as the Tri-Statc zinc and lead district (sec Jakosky, Dreyer, and Wilson7 ) where no correlation was, found between luitunil potentials and It-ad and zinc mineralization.

Z5m

Oeronion schist

Senonian andesite

Sulphide

N-W

-I20-?v

Rg. 17-7. Self-potential profile and geologic lection. Soriyer. Turkey. (After Yii'ngi;!. Ceopri/iici. 1954.)

Yiingiil" has described a self-potential survey in the Sariyer area of Turkey which led to the discovery of a sulfide mass containing /.ones with copper concentrations as high as 14 per cent. A cross section of this ore IKM.IV. as determined from core drilling and mining operations, is shown in Fig. 17-2, along with the polarization profile observed on the surface. Tlte steep topography required the use of lorrain corrections which dis placed the predicted center of the ore body northwestward from the polar- i7ati"ii minimum observed in the field. A drill hole over tin* low axis n| potential would have encountered only pyrite, as was learned snbso-

ELECTRICAL PROSPECTING ME

qucntly when the adit sho- equations he had derived ii that a spheroidal-shaped l*

17-3. Equipotential-Jine M

Except in the special ea measurable potential anon needed to locate Ixnlics hav years, a method has been d this will be discussed subs, currents, however, the cqu

Principles. If two elect external voltage is applied through the earth from one i which the current Hows t geneous in its electrical pn the flow lines will be rcgnla a horizontal plane, syin alnnit the line joining ti trodcs. Any inhomogeiie these probities will causi tions in the lines of currc Such distortions indicate t! ence of buried material wit conductivity than itssurroi so that it attracts the fit toward itself, or with low ductivity, so that it tends the lines into the surroimdii that might bc expected in

It is not possible to me: the earth by any direct mea thai the lines of flow are a the potential is equal. Thi Fig. IT-4n. The potential trodcs.l and K is distribute, by the dotted lines. In .-i respect lo .1 alling .-i vert between .1 and li will be h potential uinlenrriiuml. lie w at any Mirfarc point. MU-|I :i to li is the dame as the r:iiii

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O GEOPHYSICAL PROSPECTING ELECTRICAL PROSPECTING METHODS 345

i* been investigated in ut her list riel (sec Jakosky, Drcyer, id Ixuwecn natural potentials

SARIYER, ISTANBUL

O 25m

l S l Deronion schist

l g l Senonian andesite

( ~\ Sulphide

N-W

r. Turkey. (Afler fungal. Geophysics, 1954.)

survey in the Sariycr area of ide mass; containing zones with ut. A cross section of this oremining operations, is shown in

ofilc observed on the surface. ' terrain corrections which dis-northwestward from the polnr-

V dr )le over the low axis of pyrite, a? was" learned subse-

;':i-!!ily ' ' - Mie .-idii shown in tin- f i -run* w.-is nut ihroipjh X^nlvln^ ccinations he had derived in a previous paper/ the author had pn-dic.icd that a spheroidal-shaped body would be found ut a depth of 23 m.

17-3. Equipotential-line Method

Except in the special c:iscs. where electrochemical reactions result in measurable potential anomalies, electric currents of external rigin are needed to locate IxwJics having anomalous electrical properties. In recent years, a method has been developed for using natural earth currents, and this will be discussed subsequently. Of all methods requiring artificial currents, however, the equipotential-line technique is the simplest.

Principles. If two electrodes arc inserted in the ground and if an external voltage is applied across them, there will be a flow of current through the earth from oncclectrode to the other. If the medium through which the current flows is homo geneous in its electrical properties, the flow lines will lie regular and, in a horizontal plane, symmetrical about the line joining the elec trodes. Any inhomogcncilic.s in these properties will cause distor tions in the lines of current flow. Such distortions indicate the exist ence of buried material with higher conductivity than its surroundings, so that it attracts the flow lines toward itself, or with lower con ductivity, so that it tends to force the lines into the surrounding medium. that might be expected in either ease.

It is not possible to measure the direction of elcciric current How in the earth by any direct means. Due applies instead the general principle that the lines of flow arc always perpendicular to the lines along which the potential is equal. This is illustrated by the vertical section shown in Fig. \ 7-4ii. The potential difference (or voltage) impressed across elec trodes -l and li is distributed along the space in between them as indicated by the doi;cd lines. In a homogeneous conductor, tlir pnirii;ial wish respect to A a long a vertical plane cutting the surface at C m idway between .-l and K will lie half its value at K . I f one roiild measure the potential underground, he would observe that the potential is the same as at any surface point, such as l), wherever the ratio of distances 10 .-l and lo R is thermite as the ratio al l hat point. In l lie cast- of l), \\i\- n il in is

Fig. 17-3. Distortion of current flew line! by

bodies having (A) onomoloutly High or (B) anomalously low conductivity.

Figure 17-3 illustrates tin- eliVrls

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CLIENT

No.

01

02

03

04

05

08

07

08

O9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Pulp W

jfal ^1

f. /^tfe*4*

Sample Number-

/2~o/

12 oo Z.

/2oo3

12*003 ok*ch

;eo* *y/ZooS]zoo6''

•'• -

- -

toighar

aS AS————— ——— - - — — P.O. Bc

Daily Assay

1 2

Au

f P k

Zl

I-+Q

/9

zo

SSfcO

22.

/9

Agppm

A 93-V?.i?.63.??-"*'J

\WA SAYING INC.m 1998- Wawa. Ont POS1KO

Report

3 4

Cuppm,

S 1 2s*

5*2

52,00

5*^^13

//^OdO

V6

(ic7

Zn

nAT^*-A* "^O /^y

567

Pb

ASSAYER

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12:44 S 70S 672 584: BELL WHITE

BELL-WHITE ANALYTICAL LABORATORIES LTD.P.O. BOX 187. POJ 1KO

HAILEYBLJRY. ONTARIO tEL: 672-31O7 FAX: C7O5) 672-9843

(fierlifkntr ofNO.

0341

SAMPLE(S)OF:

SAMPLE(S) FROM:

|?| concentrate ( 1)

Roy RUpert and Associates

DATE:

RECEIVED:

July 19, 1991-i*. fv-t-45ir-.-.--,..'v. ,

July 1991

Sample f

AU g/rot

Ag g /rot

CUppm

Cu

91-1 91-2 91-3

3,/5-JFP 91-4 lc JFP 91-5

JFP 91-6 JFP 91-7 CC-91-1

Trace .. 2.0 0.41 A^^ 4.0 0.14 ff.0*4l Trace

Trace Trace

Trace 2.0 Trace Trace

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