41P1SNE8841 2.2258 POWELL

t

REPORT ON THE PROPERTY

OF

COPPER LAKE EXPLORATIONS LTD

POWELL TOWNSHIP

DISTRI CT OF TIMISKAMING

ONTARIO

010

NOV l Z w

PROJECTS UNIT

tToronto, Ontario August 8, 1975

Thomas Skimming, P. Eng

-•HUDSON S A C

Location of COPPER LAKE EXPLORATIONS LTD

Property

PALEOZOIC AND MESOZOIC

[ j

PRECAMtRIAN

t

THOMAS SKIMMING fi ASSOCIATES LIMITED

Property Location Map

Powell Township Claims——

COPPER LAKE EXPLORATIONS LTD

District of Timiskaming, Ontario

August, 1975 Plan No. l

fINTRODUCTION

As a result of a new discovery of gold In a pyrttfc alteration zone in quartzite of Timiskaming age In the former gold mining camp of Matachewan, Ontario, Copper Lake Explorations Ltd. negotiated an option agreement to acquire the property and to carry out a systematic exploration programme to assess the economic potential of the discovery.

This report reviews the results of the limited amount of explora tion work completed on the property to date and, in addition, discusses the nature of the gold mineralization and proposes a two phase exploration programme to assess the significance of the gold discovery.

The report is based principally on an examination of the property by the writer and on a study of all the pertinent technical data published by the Ontario Department of Mines.

DESCRIPTION OF PROPERTY

The property of Copper Lake Explorations Ltd. consists of a group of ten, contiguous, unpatented mineral claims, each approximately forty acres in size. The claims are illustrated on Plan No. M241, published by the Surveys and Mapping Branch of the Ontario Ministry of Natural Resources and titled "The Township of Powell, District of Timiskaming, Larder Lake Mining Division".

The Copper Lake claims are Identified on Plan No. M2^1 as fo l lows:

L367899 L372908L367900 L372909L372901 L372910L37290^4 L372911L372905 -

These claims are outlined and coloured in yellow on a copy of Plan No. M2**l accompanying this report.

LOCATION AND ACCESS

t

The property is located k O m iles by road, west of the town of Kirkland Lake, Ontario and more specifically in the centre of Powell Township in the District of Timiskaming, approximately k m iles by road, northwest of the community of Matachewan.

-2-

tAccess to the property Is by way of Highway 66 from Kirkland Lake to the town of Matachewan, a distance of 36 miles, then by way of Highway 566, northwest from Matachewan for a distance of 4 miles to Ryan Lake, which is situated on the eastern end of the property. An unimproved road, suitable only for a k wheel drive vehicle,leads westerly from Ryan Lake for a distance of approximately one mile across the property to the gold occur rence which is the subject of this report.

The location of the Copper Lake property is shown on Map N.T.S. 41 P/NE (Elk Lake Sheet) published by the Ontario Ministry of Natural Resources and on Plan l prepared by Thomas Skimming 6 Associates Limited, both of which accompany this report.

TOPOGRAPHY AND VEGETATION

The property of Copper Lake Explorations Ltd, Is characterized by a gentle relief, typical of the Superior province of the Pre cambrian Shield. It is well forested with second growth black spruce and jack pine. Large stands of white birch and popular are common, particularly in areas previously ravaged by forest fires.

The community of Matachewan, located 4 miles southeast of the Copper Lake property, served the mines In the district when they were operating. Today, it functions mainly as a base fdr supplies for logging operations and as a tourist attraction.

An electric power transmission line leading from Matachewan to Ryan Lake, crosses the eastern end of the Copper Lake Explora tions Ltd. p rope rty.

t

HISTORY AND PRODUCTION

The history of exploration and mineral production of the Matache wan area within which the property of Copper Lake Explorations Ltd. is located, is summarized chronologically in Geological Report 51, published by the Ontario Department of Mines as fo l lows:

"In the Matachewan area, prospecting has been carried on since the discovery of silver near Elk Lake In 1906. During the early years, gold was discovered in the southeastern part of Alma township and In the north central part of Cairo township. In 1916, Jake Davidson discovered gold near Davidson Creek, on what Is now part of the property of Young-Davldson Mines Limited. Shortly thereafter, Sam Otisse discovered gold on claims that now belong to Matachewan Consoli dated Mines Limited. The Young-Davidson property was investigated chiefly by Porcupine Goldfields Develop-

f

t

-3-

ment and Finance Company Limited, and the property of Matachewan Canadian Gold Limited was Investigated by Colorado-Ontario Development Company Limited. In 1919, Matachewan Canadian Gold Limited,was reorganized under the name of Matachewan Gold Mines Limited. From about 192** until the price of gold was raised in January 193^, the properties lay idle. Then, after intensive sampling of the Young-Davidson property, Hollinger Consolidated Gold Mines Limited erected a mill and, on 8 September 193**, production was begun at the rate of 500 tons per day. By 1956, when the mine was closed, 6,128,272 tons of ore con taining 585,690 ounces of gold and 131,989 ounces of silver had been produced. Ventures Limited completed a program of drifting, diamond-drilling, and sampling on the property of Matachewan Gold Mines Limited, and then erected a mill. Production began on August 193^, at the rate of 85 tons per day. In 195^, when the mine was closed, 3,535,200 tons of ore had been mined, from which 370,J)27 ounces of gold and 133,710 ounces of silver were recovered. The Ryan Lake property of Pax International Mines Limited has been In production intermittently under various company names since 1950, The property had produced '4,753,650 pounds of copper, 1,309 ounces of gold, and 3^,589 ounces of silver by the end of 1956, Since August 196^ a bulk concentrate of molybdenum and copper has been recovered from tail ings produced by former operations on the property."

Prior to the discovery of gold In the spring of 1975 on the property under option to Copper Lake Explorations Ltd., previous work was limited to basic prospecting involving some exploratory trenching and pitting. The most aggressive programme was under taken by Mr. Harold King of Matachewan subsequent to his discover ing gold on the property. This work consisted of trenching and sampling of the gold-bearing pyritic zone In the north central portion of the claim group. A longitudinal section (Plan No. 2) of the trench in the vicinity of the gold discovery Illustrating the location and results of samples collected from the auriferous zone accompanies this report.

REGIONAL GEOLOGY

The regional geology of the Matachewan area may be seen on Map 2110 "Powell and Cairo Townshlps, Timiskaming District", which accompanies Geological Report 51 published by the Ontario Department of Mines.

This area forms a small part of a large belt of "greenstones" extending from southwest of Timmins, Ontario to Chlbougamau, Quebec. The oldest rocks in the area are volcanic and are

t

overlaln by tightly folded sedimentary rocks. Both the volcanic and sedimentary rocks are cut by mafic and silicic intrusions. The Intrusive rocks, In turn, are cut by a north- south trending swarm of diabase dikes. Flat lying sedimentary rocks overlie all of the above and are Intruded by a few late d i aba se d lkes.

The volcanic rocks in the map area are folded into a syncline whose axial trace trends approximately northeast from the south- west quadrant of Powell Township. On the southern limb of the syncline, a relatively strongly magnetic stratum trends south- east to the western part of Powell Township. Evidently, the syncline plunges southeast. Both limbs appear to be offset (left-hand) by a fault that runs through Mistinlkon Lake, and truncated a short distance farther east.

Prospecting in the Matachewan area has been concentrated in quartz veins near the borders of granite and syenite stocks and cupolas, in shears or faults, and in gossan zones. The gold deposits are all in or near quartz veins that follow shears or closely spaced fractures or faults.

LOCAL GEOLOGY 6 MINERALIZATION

Based on a study of Map 2110 (Powell and Cairo Townships) published by the Ontario Department of Mines, the property of Copper Lake Explorations Ltd. Is underlain largely by steeply dipping quartzite, argillite and conglomerate beds of Timiskaming age. Because of the deformation in the area, the attitude of the sediments is highly variable; however, in the Immediate vicinity of the "gold discovery", the beds strike east-west and dip steeply to the north (75-85 degrees).

A medium grained syenite with some porphyritic phases outcrops In the south central portion of the property. it is within this syenite that most of the known gold deposits in the Matachewan area occur.

A north-south trending swarm of diabase dikes occur on the eastern portion of the property where the density of outcrop is highest.

The gold-bearing, pyritlc, alteration zone occurs In the north central portion of the property (see modified Map 2110 accom panying this report) within a fine grained quartzite member of the Timiskaming sedimentary group.

The alteration zone is characterized by a boxwork of wispy randomly oriented stringers and veinlets of bull quartz which rarely exceed l inch in width. Small fragments and particles

•5-

of shale, invariably containing pyrite, are common but appear to be confined to the alteration zone. Pyrite Is ubiquitousin the altered zone, occurring stringers but a l so associated wi hairline fractures in the rock, disseminated grains within the tural cont ro l .

principally In the quartzth the shale fragments and along

Occasionally, It occurs as quartzite with no obvious struc-

Although field evidence is limited at this time, the pyrltlc, alteration zone may represent a silicified shear zone into which gold and pyrite was Introduced at a later stage. Consi derably more field work is required before the structural setting of the gold mineralization will be evident.

The results of the grab and chip samples collected from the trench, within which the gold-bearing pyrite zone Is exposed, are tabulated be low:

Samples Collected by T. Skimming

Samp l e Number

HK-1 HK-2

HK-3 HK-4

HK-5

Gold (Au) o z/1on

0. 1420.047

0.0160.0430.039

SMver Zinc (Ag) oz/ton (Zn) 5

0.12 0.020.02 0.01

0.03 0.01

0.01 0.01

0.06 0.02

Cert l f Icateof

Ana lysis

T-9629 ^ T-9629 ' T-9629 ! T-9629 r T-9629 '

Samples Collected by H. King

Samp l e Number

l

151521

1

2

3 DC-1

Gold (Au) oz/ton

0. 12

0.23

0. 19

0.02

0.05

0.07

0.03

SI Iver (Ag) oz/ton

0.31

N/A

N/A

N/A

N/AN/A

Q.Ok

Zinc (Zn) %

0.27

N/A

N/A

N/A

N/AN/A

0. 19

Cert l f tcateof

Ana l ys Is

45379 17 45366 "' 44889 l'' 45443 ^

45443 7 4S443*7

44889 *"

The locatlonsof the above samples are graphically Illustrated in Plan No. 2 accompanying this report where it Is evident the highest gold values are from the pyritlc altered zone at the north end of the trench.

-6-

SUMMARY 6 CONCLUSIONS

The results of the limited sampling oftheauriferous pyrite zone carriecl out to date suggests an intimate relationship between the gold and pyrite. The highest gold values from the trench sampling coincided with the highest pyrite content and converse l y, the lowest gold values were obtained In the quartzite where, the pyrite content was only minor. In effect, an induced polarization could represent an Indirect but effective method of exploring for gold on the property.

Anomalous quantities of silver and zinc appear to occur with the gold In the pyrltic zone which suggest soil geochemistry as a useful supplemental exploration technique to the l.P. su rvey.

RECOMMENDATIONS

On the basis of the encouraging results obtained from the work carried out both by the property owners and Independently by the writer, further work on the property Is warranted.

A two phase exploration programme Is recommended wherein the first phase will consist essentially of geological mapping, trenching, soil geochemistry and an Induced polarization survey for the purpose of developing targets for further test ing by diamond drilling. The second phase will be contingent on favourable results from the first phase and will consist exclusively of diamond drilling.

A grid to provide the necessary control for the proposed exploration programme should be constructed in the vicinity of the gold-bearing, pyrite zone. The grid should consist of a baseline, 4,000 feet in lenth, oriented east-west with cross lines, each 2,000 feet in length, at intervals of 200 feet along the baseline. Pickets should be located every 100 feet along the grid.

Because of the disseminated nature of the pyrite coupled with the affinity the gold displays for the pyrite, an Induced polarization survey is recommended to define the boundaries of the gold-bearing pyritic zone beneath the glacial over burden and to explore for other pyritic zones In the Immediate area of the "gold showing" that may also be auriferous.

Because of the apparent association of silver and zinc with the gold, a systematic soil geochemical survey should be carried out in the general vicinity of the "gold showing". The results of this survey could prove extremely useful In interpreting the results of the l.P. survey.

Further trenching and trench sampling Is recommended to obtain some information on the uniformity and grade of gold In the favourable zone.

-7-

ESTIMATE OF COSTS

PHASE l

Line Cutting (Control Grid) $ 1,700 (1)

Geological S Geochemical Surveys 4,200 (2)

Geophysical Survey (Induced Polarization) 7,500 (3)

Chemical Analyses 3,500 ( k)

Trenching S Trench Samplirig 1,500 (5)

Transportation 1,500 (6)

Supplies 6 Equipment 1,600 (7)

Engineering S Supervision 6,000 (8)

Contingencies 2,500 (9)

$30,000

PHASE l l

Diamond DM l l Ing $J*0,000 (1)Engineering 6 Supervision 3,000 (2)

Contingencies 2,000' (3)

$i*5,000

EXPLANATION OF COSTS (PHASE l)

The foregoing estimate of costs is based on an exploration programme consisting essentially of geological mapping, trench ing, a soil geochemical survey and an Induced polarization survey. The costs are further based on the assumption that the field programme will require approximately li months to complete.

(1) The sum of $1,700 estimated for line cutting allows for 10 line miles (base line and grid lines) of cutting and picketing at a cost of S170 per line mile. '

(2) The sum of $4,200 estimated for the geological and geo chemical surveys allows for the employment of one senior geologi s t-geochemi s t for li months at a rate of $1,800 per month ^2,700) and a Junior geologist for li months at a rate of ^1,000 per month ^1,500).

(3) The sum of $7,500 estimated for the Induced polarization (l.P.) survey allows for 10 line miles of l.P. survey using a 200 foot electrode spacing, requiring an estimated

t

-8-

15 days of survey time at a basic cost of $500 per geo physical crew day.

The figure of $3,500 estimated for chemical analyses allows for 350 combined soil and trench samples at a unit cost of $10 per sample.

(5) The sum of $1,500 fof trenching and trench sampling allows for the employment of a field assistant, ex perienced In the use of a rock drill and explosives, for a period of H months at $1,000 per month.

(6) The sum of $1,500 estimated for transportation provides for the mobilization and demobilization of personnel and equipment, the routine transportation of geochemical samples to the laboratory and all other field transporta tion requirements.

(7) The amount of $1,600 estimated for supplies and equipment includes the cost of camp equipment, general field equip ment, equipment rental, food and fuel.

(8) The sum of $6,000 estimated for engineering and supervi sion Is based on a rate of $3,000 per month for a period of two months which would Include programming and logis tical planning, direct programme supervision and the compilation and Interpretation of all field data.

(9) The figure of $2,500 represents a contingency factor of approx i ma te l y. 83; of the total estimated programme cost.

EXPLANATION OF COSTS (PHASE M)

Phase M of the programme proposed herein Is contingent on favourable results from the exploration programme recommended in Phase l. The estimate of costs in Phase II, which would consist essentially of diamond drilling, Is based on a nominal programme Involving 2,000 feet of drilling and on the assump tion that the programme will require approximately one month to complete.

(1) The sum of $^^0,000 estimated for diamond drilling allows for 2,000 feet of drilling at an all inclusive price of $20 per foot or a basic price of S15 per foot ^30,000) and an allowance of $10,000 for mobilization and demobill zatlon of drill equipment, tractor rental, additional costs In long drill moves, core boxes, sample bags, apportioned salary of a senior geologist applicable to drill programme (i.e. logging and sampling drill core, spotting drill holes and general supervision of drill programme), general supplies, fuel, transportation and all other costs not included In the basic footage price.

-9-

(2) As In Phase l, the estimate of $3(000 for engineering and supervision Is based on a rate of^3*000 per month for a period of l month and would Include the planning and supervision of the drill programme and the compila tion and interpretation of all the field data,

(3) The figure of $2,000 represents a contingency factor of approximately H& of the total estimated programme cos t.

Respectfully submitted,

Toronto, Ontario August 8, 1975

{111 p* CHKMICAL NEBCAMCH AN 1 '

* CONTHACT LABOKATOMICS

GEC2VOCCOIVIIION Of (UKOINKK TiCHNICAk IMTfKfHIHt LIMITIO

518 EVANS AVE.,TORONTO. ONT., M8W 2V4 CANADATELEPHONE: 252-5895-AREA 416

CABLE ADDRESS: T ECSERVpj

,,jCERTIFICATE OP ANALYSIS

6AMPLB(S) FROM Thomas Skimming and Associates Ltd.,f-f Wh.*. V ^ db 4 .h. f B *' *~ * *W*W ^

Islington, Ontario M9A 4X9

SAMPLEtS) OF ROCKS

HK-1 '

HK-2 '.' -"

HK-3 '

HK-4 '

HK-5 s

Gold (Au) oz/ton

0.142

0.047

0.016

0.043

0.039

REPOP

T-96;

Inv.

Silver Zinc (As) oz/ton (?n)^

0.12 0.02

0.02 0.01

0.03 "*0t01.

0.01 ^.01f

0.06 0.0 e

.T NO.

29

0513

Notes Samples from the gold showing ofCopper Lake Explorations Ltd, Powell Township, Matachewan area, Ontario

Samples, Pulps and Rejects discarded after two months

DA HiCi A

Swastika, Ont, POK 1TO, ...,.T,.,,,.,,,r,r,,r,....,..,.19, , June 13/7!)SWASTIKA LABORATORIES LIMITED

of

We have assayed..........^™.........-..OI16--~"—-•"••••••——"-———--••••-samples of .......-.............................................(jjrQ..............

Received.M.,....J.vm0..-l-lT1.97"S--"8nd submitted by™.....4J^ni*y:~4y:nj?j-|--BsqT-"-—"——-———"-——

..u....—..-........-...."..-............~~..-.™~~-,...........-....with the following results:

Sample Gold No. Ozs/ton

1515 ' 0.23

SWASTIKA LABORATORIES LIMITED,

In accordance with long-established North American custom, unless it is specifically stated otherwise gold and silver values reported on those sheets have not been adjusted to compensate for losses and gains inherent in the fire assay process.

S\v Mika, Ont,, POK 1TO,

SWASTIKA LABORATORIES LIMITEDAtudpis

We have assayed __ .................Si*™ _______ . _ - _ -samples of __ ,. _ .i _ ..9.L?...

SampleMo.

123^56

Gold Ozs/ton0.120.06Nil0.120.010.01

™, —— -,.......w........,..™..™,...— .................with the following results:' *"'

•Silver Zinc Ozs/ton f0

0.31 0.27

SWASTIKA LABORATORIES LIMITED,

^.-- ^ ^ " l.-, IV, .;per:

In accordance with Ion?-established North American custom, unless it is specifically stated otherwise gold and Eilver values reported on these sheets have not been adjusted to compensate for losses and gains inherent in the fire assay process.

Swastika, Ont., POK 1TO, ...j^.y,.^,..^^

SWASTIKA LABORATORIES LIMITED(Emifirate of Aualpta

We have assayed-.,—,-~—..,..—•h^rnec—~~'-™-————samples of.

Received——t1Ti-~r,—R....a..fia,c..———and submitted by—

..with the following results:

Sample GoldNo* Ozs/ton

l 0*02 J

2 0 .05 V3 0*07 J

SWASTIKA LABORATORIES LIMITED

port

In accordance with lone-established North American cuatom.unless it is specifically stated otherwise gold and silver values afceet* have not been adjusted to compensate for losses and gains inherent in the fire assay process.

Swas '"ika, Ont., POK 1TO,,...,,19.X.. 6 ,.1.97419..

SWASTIKA LABORATORIES LIMITED(fertiftcute of Analpte

No 44339*l WtM*MM**t*IMt*IMI*l**l**4M

We have assayed,...™.,..,.....—L.V.HJ........................_................samples of ......,..-.....,.,.,

ReceivecN&Y . 2 fc. 4/74 And submitted bv Dan Campbell. Esq.*.WnlWl VV.'UhKJWt*Xxllll'nri l |i..MV(ll(.l|I.1.1ftHol(l((X4I.MH*OIMHHIHl.l*(*IIIlU BUUIII* VVCU IJjrH.HM('l(IMI'it(IM*4l*l(*ritl**'tl.|IM*tIlt*M*ll(*'"HHt.llMltinill1M.Ot.O.MtlA4I'...l*l'O.IMIIIl*COt((..4l.ll..*l.KM(.KI^*ttM

—...............i——.,n..........,,,..,with the following results:

Sample Gold Silver ZincNo. ' :Ozs/tan Oas/ton ^

i

pc-/ 0 .03 0.04 ! 0.192 Nil

]2 N^j__^21 """O.I?"

SWASTIKA LABORATORIES LIMITED,

per: '""' ' f ~ - ' ""*"*-Jk- "

In accordance with Ions-established North American custom, unions it is specifically stated otherwise gold and silver values reported on these sheets have not been adjusted to compensate for losses and gains Inherent In the fire assay process.

41P15NE8241 2 .2258 POWELL 020

MINING LANDS SECTION

REPORT ON AN INDUCED POLARIZATION SURVEY

ON BEHALF OF RECEIVE^

MOV l b 197b

PROJECTS UNIT THOMAS SKIMMING AND ASSOCIATES

NEAR MATACHEWAN, ONTARIO

BY

GEOTERREX LIMITED

Project No. 85-397

OTTAWA L. Wilson, B 0A 0 OCTOBER 1975 Geophysicist

P. Norgaard, P. Eng Geophysicist

R. Keith, B. Se. Geophysicist

ggoterrex

lo INTRODUCTION

In the period from October 2 to October 9, 1975,

Geoterrex Limited of 2060 Walkley Road, Ottawa, Ontario, com

pleted an Induced Polarization survey on behalf of Thomas

Skimming and Associates of Suite 1417, 52 ("labelle Avenue,

Islington, Ontario.

The induced polarization survey was completed on a

claim group located approximately 4 miles northwest of Mata

chewan, Ontario.

The purpose of the loPo survey was to test a known

mineralized showing for its polarization response/ map the

extent of the zone if possible and then cover the remainder of

the precut grid in a reconnaissance fashion in an attempt to

map the distribution of other similar zones of disseminated

metallic sulphides.

The field work was carried out under the direction

of L.Mo Wilson, B.A., a Geoterrex staff geophysicist 0 The

project was completed under the direction of Ro Keith, senior

geophysicist. Mr. J 0 Perkins, representing Thomas Skimming

and Associates, was on site for the duration of the survey to

oversee the operation.

gioterrex

2.

II. PERSONNEL

The following is a list of the Geoterrex personnel

necessary to the completion of the induced polarization survey

as well as the time spent by each person on the project during

the field operation and in the office for the completion of

the compilation and the final report:

Field Survey

Name and Address Number of Production Days

LoMo Wilson, Geophysicist 2450 Southvale Crescent Ottawa, Ontario

J. Crook, Geophysical Operator 1735 Rhodes Crescent Ottawa, Ontario

Office Compilation and Report

LoMo Wilson, Geophysicist 2450 Southvale Crescent Ottawa, Ontario

Jc, Crook, Geophysical Operator 1735 Rhodes Crescent Ottawa, Ontario

P 0 Norgaard, Geophysicist 2 Rebecca Crescent Ottawa, Ontario

gjgoterrex

3.

In addition, two survey assistants were provided for

the field work by Thomas Skimming and Associates.

The Geoterrex personnel and equipment arrived in Mata

chewan on October 2, 1975, but due to lack of survey assistants

at this time, the field work did not commence till October 4,

1975 and was completed on October 8, 1975,

OROteirex

4.

Ill o GEOPHYSICAL SURVEY INSTRUMENTS

"Time Domain" induced polarization equipment was

used for the completion of the present project.

Two transmitters were provided for the survey namely

a portable battery powered 250 watt unit manufactured by Crone

Geophysics Limited of Mississauga, Ontario, and a 1.5 kilowatt,

motor generator powered unit manufactured by the Elliot Geo

physical Company, Tucson, Arizona. It was anticipated that

most of the survey grid could be covered employing the portable

transmitter as there is very little overburden in the area

except possibly for the south-west corner of the grid which is

covered by swamp.

A Scintrex manufactured IPR-8 induced polarization

receiver was used throughout the survey. It is a state-of-the-

art instrument capable of measuring up to six points on the decay curve using a two second current on-time followed by a

two second current off-time as was employed for the present survey. The waveforms, modes of operation and times involved in the automatic programme are shown in the appendix to this

report. For the present survey the receiver was operated in

the "three slice" mode and readings were taken for the middle

slice only. For this slice integration takes place from 650

to 1170 milliseconds with zero time being the cut-off time of

the transmitted signal.

gRoterrex

All chargeability readings have been converted to

the "Newmont Standard" so that the polarization responses

noted are equivalent to those which would have been obtained

with a timing cycle of three seconds current on-time, 3 sec

onds current off-time and integration over one second.

Detailed specifications for the various instruments

used are included in the appendix to this report.

ggoterrex

6.

IV. GEOPHYSICAL SURVEY

l. General Description of the I 0 Po Method

The induced polarization method is based on the

electro-chemical phenomenon of overvoltage, that is, on the

establishment and detection of double layers of electrical

charge at the interface between ionic and electronic conducting

materials when an electrical current is caused to pass across

the interface. In practice, two different field techniques,

namely, Time Domain dnd Frequency Domain have been employed

to execute surveys with this method. These techniques can

yield essentially equivalent information.

All naturally occurring sulphides of metallic lustre,

some oxides and graphite, give marked induced polarization res

ponses when present in sufficient volume, even when such mater

ials occur in low concentrations and in the form of discrete

non-interconnected particles.

Each rock and soil type exhibits appreciable induced

polarization response, usually confined to a relatively low

amplitude range, which is characteristic of the specific rock

or soil. Certain clays and platey minerals including serpen

tine, sericite and chlorite, sometimes give rise to abnormally

high responses. These effects are attributed largely to so

called "membrane" polarization.

g&oterrex

7.

2. Data Acquired

The field measurements taken were as follows:

i) The applied current, la, flowing through the two

current electrodes during measurement.

ii) The primary voltage, Vp, which exists between the

potential electrodes while the current is flowing.

iii) The apparent chargeability, Ma, which is the I 0 P 0

effect noted for one complete cycle; i.e., for two

current pulses applied in opposite directions.

3. Data Reduction

The apparent chargeability, Ma, in millivoltseconds per

volt is read directly on the I.P 0 receiver,, As mentioned above,

the chargeability is measured for one complete cycle rather

than per single pulse.

From the observations of primary voltage Vp, and the

applied current, la, the apparent resistivity is calculated at

each station as follows:

P- -

ggoterrax

8.

where :

Pa s apparent resistivity in ohm meters

Vp x primary voltage in volts

la ^ applied current in amps

K ~ c onstant dependent on the array geometry

4. loP., Survey Procedure

The induced polarization survey was completed along

picketed lines prepared in advance of the field survey by per

sonnel from Thomas Skimming and Associates. The survey was

conducted along north-south lines spaced at 200 foot intervals;

the lines are numbered O, IE, 2E . . .HE and 1W, 2W . . . 5W

so that the distance of a line from the zero line is not indi

cated by the line number. For example, line 2W, is located

400 feet from the zero line. Along the lines, pickets were

placed and marked at 100 foot intervals.

The survey was completed using the double dipole

electrode configuration and a 100 foot dipole except for the

swampy area in the south-west corner of the grid where a 200

foot dipole was employed for better penetration.

After completing the detailed coverage over the

showing area using the 100 foot dipole (a) and dipole separa

tions na for n^l,2,3 a single spacing of n=3 was selected for

the rapid reconnaissance coverage of the grid east of line O

with subsequent detailing of zones of interest with ns2 and 3.

gioterrex

9.

The 100 foot dipole coverage was completed using the portable

250 watt transmitter; this was possible due to the limited

amount of overburden present coupled with the fact that the

underlying rock types exhibited very high resistivities. To

achieve better penetration in the swamp area in the southwest

corner of the grid a dipole size of 200 feet and n =2 was used

on lines O, 1W and 2W from the base line to the south boundary*,

Details regarding the double dipole electrode config

uration are included in the appendix to this report.

g&oterrex

10,

Vo DATA PRESENTATION

At the choice of Thomas Skimming and Associates the

data is presented as field plots only as opposed to formally

draughted results.

The data presentation consists of apparent charge

ability and apparent resistivity plan maps, standard pseudo

sections, and some profile plots.

In detail the following data accompanies this report:

Plate I - Apparent Chargeability Contour Plan (0=100 ft., ns3

Plate II - Apparent Resistivity Contour Plan (0=100 ft., n=3)

Plate III - Apparent Chargeability Contour Plan (a*100 ft 0 , n^

Pseudo Sections for 0=100, nrl,2,3 for the following lines:

L5W 5N - IS

L4W 8N - IS

L3W 8N - IS

L2W 7N - BL

L1W 9N - IS

LO 9N - US

L6E BL - US

L7E 3N - 9S

L8E 5N - 9S

L10E 6N - 10S

gioterrex

11.

Profile Plots for 0=100, r^l,2,3

LO 9N - US

L1W 9N - 2S

Profile Plots for 0=200, r^(l), 2

LO IN - 9S

L1W BL - 8S

L2W BL - 6S

The plan maps are presented at a scale of l" - 200

feet with a contour interval of 5.0 milliseconds for the appar

ent chargeability plan and a logarithmic interval for the appar

ent resistivity plan.

The prof iles are plotted at a scale of l" B 200 feet,

l" - 10.0 milliseconds and a two inch logarithmic cycle for the

apparent resistivity.

gfioterrex

12.

VI. DISCUSSION OF RESULTS

Generally speaking, the apparent resistivities in

the area covered are high with a large percentage of values

greater than 10,000 ohm meters. Where the resistivities are

of the order of 10,000 ohm meters the soil cover is most likely

very thin; i.e 0 , less than 10 feet in thickness and zones with

apparent resistivities greater than 20,000 ohm meters probably

correlate with outcrop areas. Apparent resistivities of the

range noted in this area are usually related to very silicious

rock types; however, such a correlation is not possible at this

time as no geological information is available to the writer.

The initial test work over the showing area, located

in the northwest corner of the survey grid, was successful in

establishing that the mineralization here does cause anomalous

polarization responses and it was thus possible to map the dis

tribution of mineralization involved in the showing. The well

defined anomalous zone is situated north of the base line and

extends west from line 0; it is possibly open towards the west

off the present grid. The detailed work completed over the(Stt'srtine-t"

showing indicates that two district mineralized bands are in

volved as indicated on Plate III. The north band extends from

about stations 6+50N on line 1W through stations 2+50N on line

5W for a length of at least 800 feet, and the shorter south

band from station 2+50N on line 00 to station 1+50N on line 1W

for a strike length of about 200 feet. Along the axis indicated

on plate III the polarizable material is located very close to

gfioterrex

13.

the surface and probably outcrops for most of the strike length.

The exact position of the mineralized showing is not known to

the writer but it is most probably located along or at least

very close to one or both anomaly axes. The highest concentra

tion of near surface polarizable material in the north zone

appears to be situated at or near station 4+50N on line 4W where

an apparent chargeability of 63 milliseconds was observed for

0=100, 0=1. O n line 1W, there is probably an increase in the

concentration of anomalous material with depth as indicated on

the pseudo section plot of this line. On the south zone, an

apparent chargeability of 52 milliseconds observed at station

2+50N on line 00 for 0=100, n =l s uggests the higher concentra

tion of polarizable material to be situated here in this band.

The amplitude of apparent chargeabilities noted in the showing

area could relate to concentrations of polarizable material of

the order of 5jfc - 6/5 average by volume; in view of the high

resistivity of the host rock,higher concentrations are not very

likely to be the cause of the chargeabilities observed.

Apart from the showing area discussed above, most of

the area surveyed east of line IE is characterized by anomalous

chargeability responses. The region bounded by 800S and 400N,

and line 4E and line HE has very high apparent chargeabilities

in the 40-100 millisecond range generally with correlating high

apparent resistivities of the order of 10,000-20,000 ohm meters,

the latter suggesting very little if any overburden to be pres

ent. This major zone appears to be open towards the east.

QSOtETO

14.

The anomalous area is very complex and consequently

it is difficult to resolve separate zones or individual bands

of concentrations of material which might be involved. The

detailed work completed on lines 6E, 7E , 8E and 10E does indicate

the presence of at least two near surface bands of higher con

centrations of polarizable material as indicated on Plate III.

As much as 10?S coverage by volume is possible in the zone ex

tending from station 4+50S on line 7E through 3+50S on line 8E

and probably to station 2+50S on line 10E. About half this

concentration should be expected in the south zone which appears

to extend from station 8+50S on line 8E to station 6+50S on line

10E.

If the high resistivity area related to this zone

expresses a single geological unit then the mineralization res

ponsible for the above two anomaly axis is likely local concen

trations of the widespread source material. With little or no

overburden being indicated on these two zones of higher concen

tration of polarizable material, an investigation by trenching should be possible.

Because of the complexity of both the showing area and the larger eastern anomalous area it is not possible to

determine the dips of the source material from the geophysical

results alone.

The amplitude of the apparent resistivities observed

in the swamp area using the larger dipole size confirm that

ggoterrex

15.

penetration has been adequately achieved; however, no anomalous

polarization responses were noted here. A rise in the charge

ability profile at the south end of line 1W suggests that polar-

izable material might be situated just south of the grid at this

point .

Respectfully submitted,

P. Norgaard, P. Eng /?Geophysicist

f rt,*C4 t'" *'"*

R. Keith, B. Se. Geophysicist

L.M. Wilson, B.A. Geophysicist

geoterrex

5. SCINTREX IPR8 I.P. RECEIVER

SPECIFICATION SHEET

Input Impedance:

50 or 60 Hz Powerline Rejection

Primary Voltage Range

Accuracy of Vp Measurement

Vs/Vp Range

Vs/Vp Accuracy

Primary SP Buckout Range

Automatic SP Tracking Range

Continuity Meter Reading

Required Stability of Transmitter Timing

Operation Temperature Range

Dimensions

Weight, Complete with Lid and Batteries

Power Supply:

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-30 0 C to *60 0 C-22 0 F to -f!40 0 F

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3.6 kg

4 D cells - Eveready #1050 or equivalent; estimated battery life 2 months intermittent duty at 25 0 C

1 Alkaline cell Eveready-E91 or equivalent; estimated life l year.

* 50 or 60 Hz depending on local frequency

geoterrex

ELLIOTT GEOPHYSICAL COMPANY

1.5 KW I.P. TRANSMITTER

SPECIFICATIONS:

INPUT POWER

OUTPUT POWER

OUTPUT VOLTAGE

OUTPUT CURRENT

OUTPUT IMPEDANCE DRIVE

TIME CYCLE

TEMPERATURE RANGE (AMBIENT)

WEIGHT, COMPLETE WITH CASE

DIMENSIONS, INCASE

120 volt 400 Hz single phase at 1800 VA, relatively insensi tive to input voltage/frequency regulation

1500 watts

200 to 3000 volts in 12 switch selected steps

5 amp. maximum

40 ohms to over 10,000 ohms

On/off periods (symmetrical) adjustable at factory from 0.5 to 10 seconds

-15 0C to *600C (*5 0 F to 1400 F)

45 pounds

10.5 inches high by 16 inches wide by 11*5 inches deep

gROterrex

OUTPUT:

PHASE:

FREQUENCY:

POWER:

ENGINE:

FUEL:

POWER RATING:

STARTER:

ALTERNATOR:

COOLING:

OVERALL DIMENSIONS;

NOMINAL WEIGHT:

1.5 KW I.P. GENERATOR

SPECIFICATION SHEET

Model P-15A

120 volts

single

400 Hz

2 KVA

Briggs d Stratton type 100232

gasoline

4 H.P.

recoil

Alleco Brushless

none

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72 pounds

17 inches 25 inches 18 inches

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geoterrex

—LONGITUDINAL SECTION— (EXPLORATION TRENCH)

COPPER LAKE EXPLORATIONS LTD

'•'

Powell Township, Ontario

J 3(0-07) ' ——I7~~II(0-23) y PC-f f 0.03)

(3) Narrow (3 ft. wide) pyritic shear zone i n guartzlte

r*

Quartzite containing appreciable pyrite and quartz stringer development (si l i c l- f i ea t ion)

( 2 ) Ouartz'Jte. moderately mineralized with pyrite and exhibiting weak

{5) Narrow zjojie... (5 f t j wide) of appreciable pyrite and quartz stringer development

(M Quartzite containingminor shale ?nterlayers-

kly mineralized withstringer deve 1 oproejit (s 1 l i c i f i ea t ion)

pyr T te , con f i ned 1 a r gel yto fracture. No appreciables i 1 i c i f i ea t i on

15 30 feet-^^. - J

scale:

LSQEKIP

oLol at***y i. i o*./*1**l*- M/icLVH in

4 /M

THOMAS SKIMMING 6 ASSOCIATES LIMITED

Trench Samp ling

Powell Township Claims

CHOPPER LAKE EXPLORATIONS LTD.

District of Timiskaming, Ontario

August, 1975 j Plan No. C-2

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