GM 36071 REPORT ON THE PHELPS DODGE PROJECT ENTREPÔT IDÉAL INC. Division Gestion de documents DÉPCIF CENTRALISE semi-actifs (C.D.S.A.) D7.

CE DOSSIEH 27 (ON DEVRA ÊTRE RETOURNT-: OUL 3G4 1 LOCALISATION

NORANDA EXPLORATION COMPANY LIMITED

Repprt

on the

Phelps Dodge Project

in

La Gauchetière, Desmazure and isa, Cavelier Townships

Ministère de Itnergie et des Ressources Gouvernement du Quebec Documentation Technique 21 MAI 1990 DATE:

No. G.M • 36071

Matagami, Québec D. Francoeur February 15, 1980

El fROUYN CONTENTS

Resumé & Recommendations

1. Introduction Page 1

2. Properties: Location and Access Page 1

3. Status of the claims Page 1

4. History Page 2

5. Work by Noranda Exploration Page 5

5.1 Introduction Page 5

5.2 Ground Geophysics Page 5

A) Phelps Dodge Group No. I Page 5 --EM Page 5 --MAG Page 5 --IP Test Page 6

B) Phelps Dodge Group No. 2 Page 7 --Purpose of the work Page 7 --EM & MAG Page 7 --Diamond drilling Page 8

5.3 Rock Geochemistry & Geological Correlations Page 9 --Introduction Page 9 --Regional Geological correlations Page 9 --AFM plots for the Mattagami Lake Mine Footwall Rhyolites Page 10

--AFM plots for the Rhyolites on Phelps Dodge Group No. 2 Page 11

--AFM plot for hanging wall andesites at Mattagami Lake Mine and for dacites and andesites on the P.D. Property Page 12

--Conclusion Page 12

FIGURES AND MAPS

Figures

Fig. 1 Sketch of the Phelps Dodge Group No. 1

Fig. 2 Sketch of the Phelps Dodge Group No. 2

Fig. 3 Projection of the Wabasse-Watson Lake Contact in surrounding Townships (1 inch = 4 miles)

Fig. 4 AFM plots for the geochemical variations of the footwall rhyolites at Mattagami Lake Mine

Maps

Map 1 Compilation map (1"=11 miles) of previous work by Phelps Dodge and Orchan Appendix I

Maps 2a Horizontal loop EM profiles (freq. 444 Hz) Appendix II

II II It Il 2b (freq. 1777 Hz). . Appendix II 2c Contoured (Vertical Field) magnetometor map. . Appendix II 2d Contoured (Proton Precession) magnetometor map. Appendix II 2e Magnetometor profile map showing the trend of magnetic axes Appendix II

Maps 3a Horizontal loop EM profiles (freq. 444Hz) Appendix IV 3b Horizontal loop EM profiles (freq. 1777 Hz). . . Appendix IV 3c Maanetometor map Appendix IV

Map 4 Geological plan (1"100') showing the surface projection of the two Noranda diamond drill holes Appendix V APPENDICES

Appendix A . Exploration costs for 1979

Appendix B . Proposed Exploration Costs for 1980

Appendix I . Detailed summary of previous work on the Phelps Dodge Groups No. 1 & No. 2

Appendix II : Geophysical report (EM & MAG) on P.D. Group No. 1

Appendix III: IP Geophysical report on P.D. Group No. 1

Appendix IV : Geophysical report (EM & MAG) on P.D. Group No. 2

Appendix V . Diamond drill sections for DDH's P.D. 79-1 and P.D. 79-2 (1"=40'), logs and surface plan (1"=100')

Appendix VI : Geochemical reports for major element analyses of core samples from DDH's-P.D. 79-1 and P.D. 79-2 by M. Boisvert November 1979, and February 1980.

Appendix VII: Geological Report by P. Clarke, (1973), Phelps Dodge Company Report. Resumé & Recommendations

Phelps Dodge Group No. 1 in La Gauchetiére Township

1. Results obtained from the horizontal loop EM survey (using wider

cable separations than previous surveys) were negative.

2. A preliminary interpretive study using all the magnetic data available

suggest local folding and faulting. However, in order to trace the

mineralized horizon and to improve on the picture, more work on

closer spaced lines is needed.

3. A limited magnetometor survey conducted on a northward extension of

the previous grid was unsuccessful in showing a suspected change in

the magnetics from NW to NE trends. This suggests that the northeasterly

trends projecting the favourable marker horizon into a similar direction

lie farther north than the limits of the present survey.

4. A test IP survey conducted on three lines over the Phelps Dodge

orebody shows that due to conductive overburden (-50' thick over the

orebody) IP responses are weak even over near surface massive concentrations

of sulphides. However, the Time Domain IP (used here) appears to give

more definite anomalies than the previous survey with the frequency

Domain IP. The previously neglected weak IP responses, outlined with

the frequency domain using 400' dipoles, around the deposit could be

resurveyed with the Time Domain IP using 200' dipoles and thus possibly

provide new drill targets.

(Refer to Appendix A for 1979 Exploration Costs and to Appendix B for 1980 proposed Exploration Costs.) Phelps Dodge Group No. 2 in Desmazur.e and Le Cavelier. Townships

1. Horizontal Loop EM and Magnetometor surveys were conducted on this

group to define a combined MAG-EM target situated along a favourable

geological contact. The anomaly was successfully located.

2. Previous shallow diamond drilling of this anomaly by Phelps Dodge and

Orchan had intersected minor sulphide mineralization; but down dip

drilling was suspected on three of the four holes. Two holes were

drilled by Noranda and aimed to intersect the conductor 200' below the

intersections in the previous holes. A zone of intense chloritic

alteration was encountered in the two holes. Uneconomical but significant

Zinc-Copper sulphide mineralization was intersected in DDH-P.D.-79-2,

in andesites stratigraphically overlying the zone of chloritic alteration

in the rhyolites.

3. Rock geochemistry for major elements performed on core samples from the

two Noranda drill holes indicate that the zone of chloritic alteration

in the rhyolites is characterized by a marked depletion in sodium,

potassium aid silica and by an enrichment in magnesium. It is thus

advantageously compared with the zone of chloritic alteration underlying

the deposit at Mattagami Lake Mine. Further diamond drilling to trace

the chloritic alteration along strike and at depth could possibly lead

to areas of better sulphide concentrations.

Another important feature from this geochemical study is the thoelitic

geochemical affinity shown for the rhyolites in contrast with the calc-

alkaline geochemical affinity of the stratigraphically overlying dacites

and andesites. This would suggest that, by comparison with the geo-

chemistry of the volcanic sequences at Mattagami Lake Mine, the Watson Lake-

Wabasse contact is repeated in this area and could be the logical southwest-

ward projection of the P.D. ore-body horizon. 1. Introduction

This report summarizes work by Noranda Exploration Co., Limited on the two Phelps Dodge properties, in La Gauchetière and in Desmazure - Le Cavelier townships, respectively, during the period extending from June to December 1979.

2. Location and Access

The Phelps Dodge Group No. 1 consisting of 87 claims (30 claims will be dropped in early 1980), centered around mining concession "667", is located in south central La Gauchetière Township. The claim block lies 15 miles west of former New Hosco Mine, and is easily accessible by a good gravel road from the New Hosco bridge on the Allard River.

The Phelps Dodge Group No. 2 is made up of 47 claims straddling the boundary between Desmazure Twp and Le Cavelier Twp. The group is centered

3.5 miles south of the north township line. Mileage 86 of the Amos - Matagami

Highway traverses the township line between Desmazure and Le Cavelier 9 kms south of the claim block; but no roads leads to the property. Access is best provided by helicopter or by boat and motor using the Allard River 13 miles southward from the New Hosco bridge. Roughly 2.5 miles on the winding

"La Rivière de L'Ours" will then take you to one half a mile south of the claim block.

3. Status of the Claims

The claims are registered with the Q.D.N.R. as listed on figure 1 and figure 2.

The present work fulfills the terms of an option agreement between

Phelps Dodge and Noranch Mines (since the amalgamation of Orchan Mines by

Noranda Mines) by which Noranda has acquired a 51% interest on the two'

Phelps Dodge properties.

...2 ~•V!.~~1,1 0.,.,_/~r, 7-7777C.__ - .• .~...I /. V ll~i.J

Figure 1 CLAIM RECORD SHEET

•, G::Ci.' \:AY2 & LOCATION STAKING ASSFSSMNT DUE CLAIM fiu=aS DATE DATE

,., ~ • Phelps Do ge Option Feb. 18/ Feb. 18/80 331843 1-5 331844 1-3 114 La Oauche;,ière Two. 331848 1-5 331849 1 Mar. 29/ Mar. 29/80 335778 2-4 June 26/ Jane 26/80 335790 1-5 Mar. 26/ Mar. 26/80 335791 1 335802 2-5 335986 1 335987 5 335988 1-3 July 9/ Julÿ 9/80 335992 1-3 335993 1-5 335994 1-5 June 26/ June 26/80 335995 1-5 335996 1-4 Mar. 28/ Mar. 28/80 336000 1-5 June 26/ June 26/80 336006 1-5 336007 1-5 Mar. 28/ Mar. 28/80 336009 5 336010 1-2 336042 1-5 336043 1-5 336046 1-3 Apr. 1/ Apr. 1/80 336047 4 33602,8 1-2 336049 1-2 336050 1-2 336108 1-2-3-5 336109 1-5 336110 1-5 336111 1-5 Mar. 26/ Mar. 26/80 336008 3-5 Nov. 2/7e Mining Lease 677

R L

R II l ~ . . \ ~ • ~ ~ ~ • . •

Figure 2 •L CLAIM1 PTCORD SHEET A 020U2 hAtiW & LOCATION STAX{1~ 'G ASSESSMENT DUE CLI'iI:i A'U.`3:.~5 DATE DATE CL= 1•rmrr•r.r ~ r. ~. _.~r •" ►, Phf:lps Dodge Option June 24/ June 24/80 De Tnazure s—Cavalier Mar. 30/ 334567 5 334568 2-5 47 Mar. 30/80 336032 1-4 336033 1-4 Apr. 1/ Apr. 180 336034 1-4 Mar. 30/ 33603 5 1-4 Mar. 30/80 336137 1-5 336138 1-5 336147 1-5 336148 1-5 Apr. 3/ 3361571-2 336158 5 Apr. 3/80 336161 - 2-4 360944 1-5 ...2

4. History

The Phelps Dodge Project started March 1972 with a ground follow up of an EM airborne survey flown in January 1972, in the Samson River area.

Between March and April 1972, eleven(11) grids designated A, B, C,

D-1, D-2, E-1, F-2, G and H, located in southern La Gauchetière, Desmazures and Le Cavelier townships, were surveyed. Ground geophysics (consisting of mag and horizontal coil EM (C.S. 400') detected several conductors subsequently recommended for drilling.

In late March 1973, drill hole 121-12 testing airborne conductor "G" cut a significant intersection of base metal bearing sulphides about 15 miles west of New Hosco Mine. Over 900 claims were staked by "P.D." to protect the inferred trend of mineralization and a questor A.E.M. survey was flown over these claims in May 1973, covering parts of La Gauchetiére, Daniel,

Desmazures and Le Cavelier townships.

From early 1973 to May 1974, 42,849 feet of diamond drilling in

43 holes were concentrated on the ore zone ("G" grid).

The body of massive sulfides outline is up to 50' wide, about 400' long near surface and extends to atleast 900' below surface. Stringer sulphides underly the massive zone and narrow satellite lenses occur in shears beside it. Known ore reserves indicate 1,545,000 tons of 4.5% Zn, 0,90% Cu,

0.50 oz/t Ag.

The overburden thickness over the deposit averages 50' but bedrock topography is irregular.

In April 1973, four small grids I.J.K. & L. were cut and surveyed by Canadian Ore Search Inc. The grids were designed to check weak and questionable anomalies not previously considered to be significant.

—.3 ...3

Between June and August 1973, 28 grids were cut in La Gauchetiére,

Daniel, Desmazures and Le Cavelier townships and surveyed as a follow up of the airborne EM flown in May 1973. EM methods consisted of horizontal coil surveys with a C.S. of 400'. IP profiles were carried out on 8 grids.

A total of 19 holes on 16 grids were completed in the period

August to November 1973.

In March 1976, Orchan Mines Ltd. optioned the property. Exploration on and around the mining concession continued.

Between May and December 1976, limited ground surveying was conducted in three areas covering 1) grids 20, 21 and 22 in Le Cavelier township; 2) group D-1 in Desmazures township and 3) the main Phelps Dodge grid in La Gauchetire township. EM methods consisted of vertical loop EM with selected detailing with a horizontal loop (ABEM).

One drill hole in 1977 tested an EM anomaly on grid G with negative results. In the course of the summer, a reconnaissance geological survey covering all known exposures on the project was done by P. MacGeehan.

Between May and October 1977, four(4) holes were drilled with negative results. Two holes were drilled in Le Cavelier township on anomaly

No. 34 (grid No. 20). This area is covered by our actual southern Phelps

Dodge group which straddles the boundary between Desmazures and Le Cavelier township. The two other holes were sunk on the D-1 group in central

Desmazures township.

...4 ...4

In conjunction with this work, HEM (Apex Paramctrix Maxmin II

(C.D.: 150 meters; Freq.: 888 Hz and 1777 Hz) and mag surveys were run on

32 line miles on three grids (F, G and H) in La Gauchetiére township.

Grids "F" and "G" are located on ground staked by Orchan to cover airborne

input anomalies immediately to the East of the NE corner of the original

Phelps Dodge group. Grid "H" rests against the East central boundary of the property. Anomalous conditions were encountered on grid F. Two holes were drilled on this latter grid in March and February 1978 with no success.

The Phelps Dodge group originally consisting of over 900 claims

was progressively reduced to 1) a group of 114 claims centered on the mining

concession in southern La Gauchetiére township and 2) of a group of 47 claims straddling the boundary between Desmazures and Le Cavelier townships.

In May 1979, Orchan Mines Ltd. was amalgamated by Noranda Mines Ltd.

Ground geophysics on the two remaining claim blocks and two diamond drill holes on the southeastern group by Noranda Exploration, between June and

November 1979, completed the terms of the agreement between Orchan Mines and Phelps Dodge to require a 51% interest. In september 1979, it was decided to further reduce the claim block in La Gauchetiére Twp to 84 claims. These

30 claims will expire between February and April 1980.

Details of the work done by Orchan Mines and Phelps Dodge are given in Appendix I. A 1" to } mile map showing coverage by airborne surveys, original outline of claim blocks and grid and diamond drill hole locations is also included in Appendix I.

...5 ... 5

5. Work by Noranda Exploration

5.1 -Introduction

A review of all the previous work, mostly by Phelps Dodge and Orchan Mines, lead to the elaboration of an Exploration program which resulted in 54 miles of horizontal loop EM and magnetometor surveys on the two claim groups followed by two diamond drill holes to test a combined

MAG-EM target. The two drill holes were sunk on claim 336148 (3) of claim group No. 2 in Desmazure - Le Cavelier townships.

Rock geochemistry on core samples for major elements was made for comparison with similar work conducted on core samples at Mattagami

Lake Mine.

5.2 Ground Geophysics

A) Phelps Dodge Group No. 1

--EM: Forty four miles of horizontal loop EM using frequencies 444 Hz were conducted over the former "G" grid in September 1979. Wider cable separations(600') than in previous surveys was used for deeper penetration.

Results were negative except for one anomaly over the P.D. orebody. (Report and maps 2a & 2b are included in Appendix II).

--MAG: Twenty four line miles of ground magnetometor were conducted on the present grid. Twelve miles of magnetometor were done as a northward extension of previous surveys to check an area where a change in strike in the magnetic trend was suspected. Results show persistent northwesterly magnetic trends and indicate that the projection of the P.D. orebody horizon around a fold nose into a northeasterly trending horizon must lie farther north than the limits bf the present survey (Map 2c included in Appendix II).

...6 ...6

Twelve miles of survey using a proton precession magnetometor

(readings taken every 50 feet) was conducted over the P.D. orebody on Line 0+00 at the base line covering a corridor of 2400 feet along its western and eastern extensions. This would hopefully outline the structure and help to trace the extension of the mineralized horizon. It becomes obvious, when studying map 2d (shown in Appendix II), that not enough of the area was surveyed for a detailed interpretation. However, a preliminary interpretive study using all the magnetic data available (Map 2e in Appendix II) suggest local folding and faulting. A detailed survey on closer spaced lines (200') and covering the entire grid could give an improved picture.

--Test IP survey: A test IP survey using a time domain IP equipment with the following configuration (dipoles: a = 100, 200 or 300 n = 1 to 4) was conducted over the P.D. orebody, in September 1979, on lines 4W, 0, and 4E.

The survey was conducted for comparative purposes. A previous survey by McPhar in 1973, covering 25 line miles over the "G" grid, had been conducted using a frequency Domain IP instrument. In this latter case 400' dipoles with some detail work with 200' and 100' dipoles were used. Even the weak responses obtained over the deposit were not attributed to the presence of sulphide mineralization. Close examination of the profiles obtained by the two methods show that, in both cases, weak responses, due to conductive overburden ( 50') were obtained (with the 200 and 100 dipoles) over the massive sulphides. Anomalies obtained by the Time Domain IP, however, appear to be a little more definite (IP report included in Appendix III).

...7 ...7

Since the area surrounding the deposit was surveyed with the frequency domain using 400' dipoles, it is recommended if more work is warranted on the property at a later date, to survey with the Time Domain'IP using 200' dipoles the previously neglected weak but anomalous responses.

B) Phelps Dodge Group No. 2

-- Purpose of the work

The reader is referred to Appendix I for a detailed summary of previous work on this group. In summary, four diamond drill holes (2 by

Phelps Dodge in 1973; and 2 by Orchan in 1976) tested a combined MAG-EM target centered on claim 336 148 (3). Three of the four holes intersected minor sulphide mineralization (Py, Po, Sp, Cp). None of the holes exceeded

530 feet in depth and three of them drilled bearing southwest suspected down dip drilling.

It was decided to relocate the anomaly on the ground and to drill two holes bearing Northeast and approximately 200 feet below the sulphide intersections in the previous holes.

A small grid centered on claim 336034 was also cut to check the site of an airborne EM anomaly (ano. #33, Phelps Dodge, May 1973). The combined MAG-EM anomaly on claim 336148 (3) corresponds to the airborne EM anomaly No. 34 in the Phelps Dodge report.

-- EM & MAG

Results from the horizontal loop EM and magnetometor surveys are discussed in detail in Appendix IV, maps 3a and 3b). One EM anomaly (3 mhos) with a coincident 4,000 gamma high was outlined on claim 336148(3) and corresponds to the previously mentioned, target. All other responses were attributed to conductive overburden. ...8 ...8

--Diamond Drillinj

Field evidence for the location of the four diamond drill holes by Phelps Dodge and Orchan was not found. DDH's #P.D.-79-1 and 2 were collared south of the combined MAG-EM target and aimed to intersect the conductor approximately 300 feet below the surface.

DDH P.D.-79-1

(collar at base line 6-OOEO)

This hole intersected moderately chloritized rhyolites becoming highly chloritized (with a talcy texture in places) between footages 300 and

460. A 8 foot section containing 30% of barren sulphides (py, Po) occurs between footages 442and 450. A cherty tuffite 5 foot thick and containing 5% disseminated pyrite at footage 499 is then followed by relatively fresh dacites and andesites with dioritic sill or dike intercalations.

DDH # P.D.-79-2

(collar at base line 8-50E)

This hole intersected an altered (highly chloritized) rhyolite section at the beginning of the hole. At footage 206, a change in the rock, not so obvious to the naked eye, is very striking in the geochemistry of the rock (discussed in the next chapter). The altered rhyolites are followed by relatively fresher dacitic rocks in turn followed by rocks of andesite composition.

Significant sulphide intersections between footages 345 and 485 gave the following assays:

...9 ...9 ASSAYS

Footages Zn Cu Ag Comments

345 - 348 ( 3) 0.42 0.67 0.12 349 - 360 (11) Not Analysed 361 - 373 (12) 0.09 0.52 0.20 65% sulphides' ((Py (70%) Mag (20%) Tr Cp) ) 374 - 385 (11) Not Analysed 386 - 390 ( 4) 2.36 0.22 0.06 391 - 425 (34) Not Analysed 426 - 436 (10) 0.14 0.19 0.14 20% Py 437 - 441 ( 4) 2.26 0.11 0.17 442 - 444 ( 2) Not Analysed 445 - 450 ( 5) 0.38 0.24 0.17 451 - 480 (29) Not Analysed 481 - 485 ( 4) 0.80 0.14 0.17 20% Py

(drill sections in Appendix V)

5.3 Rock Geochemistry and Regional Geological Correlations

-- Introduction

As briefly mentionned earlier, a geochemical study for major elements was undertaken on core samples from the two holes on the Phelps Dodge property for comparison with similar work being conducted at Mattagami Lake

Mine and providing useful information on alteration in the vicinity of the ore deposit and on the chemistry of the different groups of volcanic rocks.

So far, results have been encouraging in showing 1) a progressive alteration of the rhyolites (i.e., a depletion in Na, K and Si and an enrich- ment in Mg as one approaches areas of sulphide mineralization; and 2) in indicating a thoelitic geochemical affinity for rock underlying the favourable marker horizon and a calc-alkaline affinity for the overlying rocks.

-- Regional Geological Correlations

At Mattagami Lake Mine, the ore bearing horizon is a cherty TUFF

(10 to 40 feet in thickness) marking the end of the Watson Lake series of volcanic rocks (predominantly moderately to highly chloritized rhyolites). The marker tuff is overlain by the fresher Wabasse volcanics made up of mafic and intermediate flows. ...10 .10

If this difference in the geochemistry of the two major groups of volcanic rocks is correct and provided that our future geochemical studies confirm the results so far obtained; then rock geochemistry could be used as a tool to locate the favourable marker horizon in areas where this horizon is projected.

The close similarity between Hanging wall and footwall rocks at

Mattagami Lake Mine with those at the Phelps Dodge ore body was stressed by

P. Clarke in 1973 (Phelps Dodge Company report included in Appendix VII) who suggested the reemergence of the Watson Lake - Wabasse contact into a fold nose closing in west central La Gauchetiére township. Figure 3 illustrates the type of folding required to repeat this contact.

-- AFM plots for Mattagami Lake Mine footwall rhyolites

Figure 4 is an AFM plot for the chemical variations of rhyolites from a section drilled through the alteration zone underlying the deposit at

Mattagami Lake Mine. A noticeable feature is the migration of the rhyolite samples within the thoelitic field reflecting a progressive alteration of the rhyolites from fresh rhyolites to chlorite-rich rocks, occasionally talcy.

This progressive alteration in 4 stages has been described by Roberts (1974).

Stages A to B are characterized by the removal of the alkalies (sodium followed by potassium) and by the addition of iron and magnesium in the initial stages of chloritization. Stage C is marked by a substantial removal of silica to produce a chlorite-rich rock. In stage D of the alteration process, aluminum is gradually removed from the rock with the transformation of chlorite (the ratio Mg/Fe is increased) to form a talc actinolite schist. Microfilm

PAGES DE DIMENSION HORS STANDARD

MICROFILMÉE SUR 35 MM ET

POSITIONNÉES Â LA SUITE DES

PRÉSENTES PAGES STANDARDS

Numérique

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NUMÉRISÉE ET POSITIONNÉE A LA

SUITE DES PRÉSENTES PAGES STANDARDS At the bottom of the section, an anorthPsi-t gabbro was encountered.

Rocks in the vicinity of the gabbro plot in the northeast portion of the

diagram showing a marked increase in iron and may not be characteristic of the

alteration zone beneath the deposit.

--AFM plots for the Rhyolites on Phelps Dodge Group No. 2

Stages B, C and D of this progressive alteration are recognized

in the rhyolite section of DDH P.D.-79-1 on the Phelps Dodge property (AFM

plots shown on the drill sections in Appendix V). An alteration zone is

clearly indicated between footages 300 and 460. At footage 380, the rhyolite

has developped a talcy texture and the rock is highly depleted in silica and

is enriched in magnesium assaying 29% silica and 16.2% magnesium (Geochemical report by M. Boisvert in Appendix VI).

The rhyolite section in DDH P.D.-79-2 plots in area C and in

area D of the AFM plots. Here, the entire rhyolite section is completely depleted in sodium and potassium. The rocks are also leached in silica and

enriched in magnesium but without the development of talc. The significance

of this alteration is emphasized by the stringer type Zinc-Copper sulphide intersections in the stratigraphically overlying andesites.

This alteration pattern in the rhyolites of the Phelps Dodge property is thus similar in nature and in intensity to the alteration zone underlying the deposit at Mattagami Lake Mine. It is, therefore, believed to be a significant feature which could be traced by further diamond drilling.

...12 .12

--AFM plots for Ianging_ wall andesites at Mattagami Lake Mine and for the andesites on the P.D. property

Another important feature resulting from this geochemical study is shown by the plots of the dacitic and andesitic rocks on the AFM plot.

In DDH P.D.-79-2, these relatively fresh rocks plot in the cale-alkaline field. The andesites at the Mattagami Lake camp (Fig. 4) plot on the thoelitic- cale-alkaline boundary also suggesting a cale-elkaline affinity. This would tend to suggest that, in DDH-P.D.-79-2, the Watson Lake-Wabasse contact lies at the interface between the altered rhyolites and the fresher dacitic and andesitic rocks. In DDH-79-1, this relation is not seen probably due to a lack of enough samples. Furthermore, the andesites shown in area A of the

AFM plot are anomalously high in sodium and potassium and could be dikes rather than flows.

--Conclusion

Thus the geochemical results from the two diamond drill holes on claim group No. 2 in Le Cavelier and in Desmazures townships tend to confirm that DDH # P.D.-79-2 traversed the southeastward projection (from the P.D. ore- body) of the Watson Lake - Wabasse contact from south to north. Furthermore, it shows areas of intense chloritic alteration in the rhyolites of thoelitic affinity underlying the sulphide intersections in DDH-P.D.-79-2. These features are illustrated in a plan sketch (map 4 in Appendix V) showing the surface pro- jection of the two diamond drill holes.

NORANDA EXPLORATION CO., LTD.

D. Francoeur District Geologist, Matagami REFERENCES

Bilan, R. (1953) Région de la rivière Allard, comté d'Abitibi-Est. Min. des Mines, Québec, R.G. 57.

Clarke, P.J. (1973 & 1974) Geological Reconnaissance of the Samson River Project Area, Project 121, Phelps Dodge Corporation of Canada, Ltd., Company report.

Longley, W.H. (1943) Région du Lac Kitchigama, Territoire d'Abitibi; Min. des Mines, Québec, R.G. 12.

MacGeehan, P. (1976) Report on Surface Geological Mapping on the Phelps Dodge Property, Orchan Mines Ltd., Company report.

Remick, J.G. (1969) Géologie de la Région d'Harricana - Turgeon, Comtés d'Abitibi-Est et d'Abitibi-Ouest. Min. Richesses Naturelles, Québec, R.P. 564.

Roberts, R.G. and Jackson, E.J. (1978) Alteration and ore forming processes at Mattagami Lake Mine, Canadian Journal of Earth Sciences, Vol. 15, No. 1. APPENDIX A

Phelps Dodge Groups (2)

Cost of Exploration

for

1979

1. Line cutting

Group (1) 50.97 miles @ 150/mile: $7,645.00 Som titis /240w1-1-Q‘a.Uu-zhewi' Group (2) 14.62 miles @ 160/mile: 2,984.70 $10,629.70

2. Geophysics

Group (2) (A) E.M.H. 10.72 miles 0 160/mile: 1,715.20 (B) MAG 12.21 miles @ 90/mile: 1,098.90

Group (1) (A) E.M.H. 44.0 miles @ 160/mile : 7,040.00 (B) MAG (Vertical Field) 12.21 miles @ 90/mile : 1,098.90 MAG (Nuclear Precession) (C) Spun)S qtit Cf1.12u2LFH Co-! 12.21 miles @ 90/mile : 1,098.90 (D) IP 2 days @ 850/day 1,700.00 \ Report 500.00

Interpretation, drafing and a review of previous results 800.00 Mobilization & Demobilization 500.00 $15,551.90

...2 ...2

3. Diamond drilling DDII No. P.D.-2-79-1 700' @ 19.75/ft. $13,825.00 Acid tests, surveying casing, materials left in hole 685.10

DDH No. P.D.-2-79-2 565' @ 19.75/ft. 11,158.75 Other costs as above 1,129.17

Mobilization (A) RD Construction 1,500.00 (B) Crossing River 2,329.00

Demobilization 1,500.00 $32,731.02

4. Rock Geochemistry 36 samples @ 12.00/Sample $ 432.00 7 samples @ 8.00/Sample 56.00 $ 488.00

5. Labor: Noranda Staff Field & Office Distributed as follows:

Compilation $ 800.00 Core logging 2,000.00 Core handling & splitting 940.00 Drill supervision 1,000.00 Report writing 1,850.68 Drafting 943.56 Supervision 1,883.56 $9,417.80

6. Supplies $ lodging $ 500.00 $ 500.00 7. Transportation (A) Company vehicles $ 300.00 (B) Helicopter 1,000.00 (C) Commercial Air 60.00 $1,360.00

8. Property Fees, Taxes, etc. . $5,939.98 $5,939.98

GRAND TOTAL: $76,618.40

I certify that the foregoing expenses are a true account of expenditures on the two Phelps Dodge Groups in the period extending from June to December, 1979.

D. Francoeur Geologist APPENDIX B

Proposed Exploration Costs

For 1980

Line Cutting: 15 miles @ 170.00/mile $ 2,550.00

Geophysics: IP 20 miles @ 600.00/mile 12,000.00 EM 10 miles @ 170.00/mile 1,700.00 MAG 48 miles @ 90.00/mile 4,320.00

Diamond Drilling: 2500' @ 25.00/f t. 62,500.00

Rock Geochemistry: 80 samples @ 12.00/sample 960.00

Road work: 40 hrs. @ 35.00/hr. 1,400.00

TOTAL $85,430.00

The cost of this program, if approved, would be shared as follows:

Noranda Mines 51% $43,569.30 Phelps Dodge 49% 41,860.70 $85,430.00

Explanatory Notes

Group No. 1

Proton precession ground mag to outline structure for the localization of the favourable marker horizon

IP on the previously neglected or doudtful anomalies to outline drill targets

Group No. 2

Line cutting, ground EM and MAG on an extension of the west grid (mislocated by us) and IP detailing of the best targets

...2 Diamond Drilling:

A) To test and trace the extension of the zone chlorite alteration in the rhyolites at depth and along.strilw for sulphide mineralization

B) To test the best geophysical target on the extended grid

D. Francoeur Geologist APPENDIX I

Summary of Previous Work

Phelps Dodge Group No. 1

LOCATION: Covers the western two-thirds of the actual 114 Phelps Dodge claim

group in La Gauchetière township, including mining concession "A" 677.

NATURE OF ANOMALY "G" (in reality ano. "C" on airborne map).

A) AIRBORNE RESPONSE

Single line anomaly, well defined, fair intensity, good apparent

conductivity, direct magnetic association. Est. depth (125').

Inst. CP-AYR aircraft equiped with an In phase/Out of phase EM

system operating at 320 Hz.

Geometrics G-803 high performance proton resonance magnetometer.

B) GROUND RESPONSE

A single line anomaly have some width and a "bull's" eye type

2700 gamma anomaly coincident with it.

Inst.: Crone CEM unit) Freq. 1830 Hz ) EM C.S. (400') )

McPhar M-700 Fluxgate) MAG Mag C) GROUND SURVEYS - DISCUSSION AND RESULTS

--VERTICAL LOOP AND MAG, PHELPS DODGE, APRIL 1973

Crone EM, (1830 Hz; 400' C.S.)

30 line miles on grid G.

...2 . . . 2

RESULTS

EM Other than anomaly G, no bedrock conductors detected.

MAG A) Interesting NW trends indicated with superimposed isolated higher

amplitude anomalies (800-9200 Y); therefore, similar to anomaly G

but without conductivity. Anomaly shapes indicate either 1) deeper

sources; 2) larger sources near surface with lower susceptibility.

B) Anomalous area of erratic magnetics running north on line 0+00 from

20+OOS (probably a gabbro plug).

IP SURVEY OCTOBER 1, 1973 (project 121 grid G), BY McPHAR FOR PHELPS DODGE

Area covered: 25 line miles using 400' dipoles with some detail

work with 200' and 100' dipoles. Separations were used for n=1, 2, 3 and 4.

The 400' dipole readings were taken every 200'.

RESULTS

Definite significant anomalies were not produced even in the

vicinity of the massive sulphide zone. However, on the 200' and 100' dipole deparation a definite resistivity anomaly is detected over the sulphide zone,

extending from 4W to 4E on the 200' spreads. (Weak P.F.E. response of 0.5 -

0.7% on all five lines).

No P.F.E. anomalies above 1.0% on entire grid, therefore IP response

related to geol. env. rather than actual sulphide mineralization (?)

RECOMMENDATION

A deeper exploration electromagnetic method was suggested: Specifically

a vertical loop EM with a coil separation of 800'.

...3 ...3

TURAM AND HORIZONTAL LOOP, PHELPS DODGE, OCTOBER 30, NOVEMBER 1, 1973

Limited comparison surveys at 0+00 and B.L. and vicinity by Geosearch Consultants Ltd.

1) Turam Survey (4-00E - 4-00W) (ABEM unit)

2) Horizontal loop (using a ABEM demi gun) (600' C.S., freq.: 880 Hz) - other profiles using other C.S. and frequencies for comparison.

Results confirmed the short strike length of conductor "G" and its north dip.

BASE TILL SAMPLING ORIENTATION STUDY ("G" GRID)

By Bondar-Clegg & Co., Ltd. (R. Cormier) for Phelps Dodge, November 1973.

Location of survey: over the deposit (L 6E to 2W) (1-OON to 1-50S)

16 holes were done with a portable Pionjar percussion drill (driving mechanism).

Rocks were extracted using a 10 ton hydraulic jack.

RESULTS

Metal concentrations in the basal till over this deposit are considerably lower than in the case of Louvem, ISO or INSCO deposits. A study of the mineralogy of 16 samples, however, confirmed the proximity to a mineralized zone. The sulphide mineral content is reduced by appreciable amounts of pyroxene, hornblende and epidote; therefore, giving lower absolute values for the Cu-Zn content. Also a rugged bedrock topography caused the dispersion of the basal till.

ORCHAN, SEPTEMBER 1976 GRID "G"

1) Extended grid G to the NW

2) Mag where not previously covered by Phelps Dodge (49.1 line miles)

3) Vertical loop EM (SE 300) with C.S. (800') over entire grid (77.2 line miles) freq. (1600 Hz)

...4 ...4

MAG General NW-SE trend Change in strike at NW end to NE-SW trends. Most likely due to folding Gabbro intrusion suspected at 127-00W Same at 12E - 30S

EM 25 conductors outlined

Dec. 1970: Vertical loop conductors considered to reflect bedrock features were covered by detailed horizontal loop EM methods using an ABEM demi gun unit (C.S. 400'; freq. 2640 Hz)

EM RESULTS

9 HEM anomalies were defined and 6 DDH's were recommended.

DDH'S AND EM CHECK

Upon completion of DDH G-77-2 (L32-00W, 3-75N), a low freq. HEM

(880 Hz) check was done on the high freq. anomalies. Coil separation was

500' (inst.: ABEM demi gun).

EM RESULTS

No low freq. responses were obtained and thus the high freq. anomalies were attributed to conductive overburden. PREVIOUS WORK

GRIDS F, G, H

Property: Phelps Dodge Option

Location: La Gauchetière township

Type of Work: Horizontal loop and mag by Pudifin and Company for Orchan Mines Ltd., September 1977.

Instrumentation:

1) HEM (Apex Parametrics Max Min II; C.S.: 150 meters, frequency: 888Hz and 1777 Hz

2) Mag (Sharpe Fluxgate MF-1).

Results:

Grid F (Former P.D. claims now lapsed).

--A weak to moderately strong conductive zone crosses this grid in a NE direction. Good conductivity noted on the low frequency readings between lines 4E and 16E. No direct mag correlation.

--DDH's (1978). Two holes drilled. Rhyolite (massive and brecciated) with interbanded graphitic and pyritic (5%). Tuffs were intersected in F-78-1. F-78-2 (log not available).

Grid G (Former P.D. claims now lapsed).

--No conductors of note on this grid.

Grid H (in eastern third of the actual block of 114 claims).

--Three(3) poor conductors with large out of phase responses were outlined.

--Magnetics are featureless.

Property: Phelps Dodge Group No. 2

Location: 47 claims straddling the south half boundary between Desmazures and Le Cavelier townships. I Previous Work:

1) Airborne EM Phelps Dodge flew an airborne imput survey over this area in May 1973. A poor isolated AEM conductor (anom. No. 20) with may correlation was outlined in the southeast corner of the present holdings on claim 336148(3).

2) Ground EM and MAC (Phelps Dodge, 1973)

A) Instrumentation:

--Horizontal loop (EM-17,-C.S.: 400', freq.: 1600 Hz).

--MAG (sharpe MF-1 fluxgate).

B) Results:

A poor conductivity EM response was obtained: (est. depth: 40'). The conductor showed coincidence with a sharpe mag high (2400 gammas in amplitude).

3) Diamond Drilling. (Phelps Dodge).

--DDH No. 121-18 (September 1973) drilled S45°W to a depth of 302' missed the conductor. Down dip drilling was suspected.

--DDH NO. 121-54 (April 1975) drilled towards the NE (N45E) along the same section intersected minor sulphide mineral- ization (Py, Po, Sp, and Cp). The hole was ended in barren andesite after a succession of chlorite dacitic tuffs, and breccias, chloritic dacite and rhyodacite.

4) EM and MAG (Orchan Mines - Phelps Dodge, 1976)

A grid was cut to cover airborne input anomaly No. 20 and anomalies No. 21 and 22 to the southeast.

The actual claim block now covers airborne anom. No. 20 only.

Mag (sharpe MF-1 fluxgate) was conducted over the entire grid. Vertical loop EM was done over anomalies 21 and 22 whereas horizontal loop EM (ABEM Demi Gun, C.S.: 400', freq.: 880 Hz and 2640 Hz) was conducted over anom. No. 20.

The horizontal loop survey outlined one dual frequency conductor with a coincident magnetic anomaly.

5. Diamond Drilling (Orchan Mines Ltd. - Phelps Dodge).

Two holes drilled grid south (i.e. S45°W) and collared at the same location (L94W, 0-00) intersected minor Py, Cp and Sp of subeconomic grade. The holes did not exceed 530' in depth. Similarly to DDH No. 121-18, these holes cut the formation at a poor angle. II

1) Airborne EM

Another airborne conductor (Anom. No. 18) was outlined in the west central portion of the claim group (claims 336034(3), 336035(1,3)). This anomaly has a poor conductivity portion which extends eastward_ for another 3/4 of a mile.

2) Ground EM and MAG (Phelps Dodge 1973)

--Magnetics in this area are featureless.

--Horizontal loop (EM-17, C.S.: 400', Freq. 1600 Hz) EM results are erratic but one anomaly was suggested near baseline on 12E.

--Vertical loop EM (SE 600, freq.: 1600 Hz, C.S. 600') check work detected a conductor axis at this locality.

--IP (a 300', n 1,2,3,4, readings every 150'). An IP profile on 8E showed a weak PFE response, from 0 to 3N coincident with a broad low resistivity zone. A depth limited source (center greater than 200' deep) was suggested.

--A horizontal loop EM check on line 8E using an ABEM Demi Gun (C.S.: 600'; freq.: 880 Hz) showed a flat profile.

--Three lines (4E, 8E, 12E) were surveyed with an ABEM Turam. Multiple conductor running southeast was detected immediately south of the baseline.

--This latter conductor was tested by DDH No. 121-55. Drill hole No. 121-55 cut a mixture of cherty acid tuffs and sediments but no obvious conductor is reported to be seen in the core. On this account, anomaly No. 18 was not considered an interesting target.

N.B.

Anomalies, as referred to in this summary, are given the numbers of the spot grids cut over the Phelps Dodge airborne anomalies.

In the airborne EM report, the above anomalies are numbered as follows:

Grid 20 Anomaly No. 34 Grid 21 Anomaly (not numbered) Grid 22 Anomaly No. 36 Grid 18 Anomaly No. 33

PREVIOUS WORK

Property: Orchan - La Gauchetiçre

Location: La Gaucheticre & Daniel townships, grids A to E inclusively.

Type of Work: Horizontal loop and mag. by Pudifin & Company for Orchan Mines Ltd., September 1977.

Instrumentation:

1) HEM (Apex Parametrics Max Min II; C.S.: 150 meters, freq.: 888 Hz & 1777 Hz)

2) Mag (Sharpe Fluxgate MF-1)

Results

Grid A: - Several weak conductors outlined. None with direct mag. correlation except for conductor "H" which occurs in a broad magnetic high (300 gamma above background).

- Conductor "L" shows best conductivity.

- DDH's (Feb. - March 1978) A-78-1 Tested conductor "C". Rhyolite with disseminated Py throughout hole. Possible shear zone between footages (61 & 100). Anomaly not explained.

A-78-2 Tested conductor "L". Rhyolite and intermittent granodiorite encountered in hole. No satisfactory explanation for the anomaly.

Grid B: - The main conductor outlined lies in swampy ground curving around a hill suggesting overburden as a cause.

- A weak mag association is noted.

Grid C: - One weak conductor outlined on the high frequency reading.

Grid D: - Four weak conductors not detected on the low frequency readings.

Grid E: - One small weak conductor barely detected on the low frequency reading. 4,11" !''~' • di„r) llldhr'~p t ),:1'1i~ (.,•111 .I~~i • .Îii1 I .I'1 1A1V ' fl•I (Nl'.+) i~.f h t; 1 I IV11t+ 1 t•, ;i it•i: `_+

APPENDIX II

RAPPORT GEOPHYSIQUE

LEVES ELECTROMAGNETIQUE ET MAGNETIQUES

PROPRIETE DE EXPLORATIONS NORANDA LTEE.

PROJET PHELPS DODGE GROUP NO. 1

CANTON LA GAUCHETIERE

Province de Quebec.

1.nergie et des Ressources Gouverk n au Qu6bec Gocuu°~V~ a'tion Technique 2 1 MAI 1980 DATE: 36071 No. G.M.:

St';' i.('iiii3}"l'- 1 W 9 . ,.,,,-.-..~ ,., .., , .~,;nu,~ : ~

Un levé électromagnétique à cadres hori- zontaux ainsi t;lJe des levés vi gnét i ques furent effec- tues sur une propriété appartenant à la compagnie Exploration Norar;cia Ltte.

Le but de ces levés consistait à délimiter sur le terrain des zones conductrices pouvant être pro- duites par des horizons de sulfures; ainsi que de nous permettre de mieux connaître la structure géologique.

PROPRIETE, LOCALISATION ET ACCES

La propriété que nous avons levée est située dans le canton La Gauchetire, région de Mattagami et elle comprend les claims suivants:

Licence Claims Licence Claims Licence Claims

336010 1 - 2 331843 1- 5 335588 1- 3 336042 3 - 5 331844 1 - 3 3: :~'.`?2 1 - 3 336013 3 - 5 -~J3{~, ~,~~ ~,3 1 - 5 .,.,;~..~_ n~~3_~ 1 - 5 336046 1 - 3 3318/.6 1 335994 1 - 5. 336047 4 .1 33:ï109 2- 5 335995 1- 5 336043 1 - 2 3:i i7i~3 2- 4 335996 1 - 4 336049 1 - 2 335790 1 - J.it1~iO~ ll 1 - 5 336050 1 - 2 335751 1 336063 1- 5 .,.,; .,., ,. . 336108 1 - 2 ~.-,.),)? 2- 5 J.~, ~,ù7 1- 5 336110 1 - 3 3:35986 133, , 3- 5 336111 3 - 5 336 1:i7 J 3.31.6ü9 5

u ~n ,>li)C r 677.

.l L'accs cette propriété'de la ville Mattagami est facile en emp runtant un système routier qui se rend directement sur la propriété.

- 1 TRAVAUX EFFECTUES

Aux cois d'août et de septembre 1979, un total de 44.0 milles de 1 ignes fut levé par la méthode électromagnétique à cadre.: horizontaux. Durant la même période, nous avons levé 12.2 milles avec un magnétom6tre 1 du type scintrex ( composante verticale ) et 12.2 milles avec un magnétomètre du type Geometric G-816 ( composante totale ).

Le réseau que nous avons levé comprenait des lignes distantes l'une de l'autre de 400 pieds. Lors du levé électromagnétique, les lectures étaient prises â intervalle de 100 pieds et en présence de variations elles étaient rapprochées â 50 pieds. L'instrument fut calibré sur un esker dans la région de Mattagami. Lors du levé ,e. magnétique, les lectures étaient prises normalement à intervalle de 50 pieds. Toutes ces lectures ont été rattachées l'une ü l'autre en établissant des stations de base sur la ligne de base et en se référant à un ancien levé magnétique pour ramener les lectures â un méa;e niveau que ce dernier levé.

r ri. . Mr Pt~~~,R rn~ 5 ~.n.. ur~.S S„nr~ 1 ..1.~~ '"C r•a:~r~'T ,i ~.,~,1:_.~ l: EG~JI0 7 t~YST ~QJ~S1 ~: Ei lr'LOYcES .....~

La méthode électromagnétique à cadres hori- zontaux per:.iee t e Ul i G'r l i,ùi' les zones conductrices quii peuvent étrc, :;~a i s pas ni'i:eu ireent, des masses de miné- raux conducteurs. Les principaux minéraux ayant la -3-

i propriété de conduire l'électricité sont la pyrite, la pyrrhotine, la crlaicopyrite, le nickel ( Gais pas la sphaiérite ) et le graphite. Dans certaines régions, les morts-terrains sont conducteurs et une bonne expé- rience est requise pour reconnaître la cause des diffé- rentes anomalies obtenues. Parfois il est impossible d'interpréter si il y a oui ou non présence d'un peu de sulfures disséminés ou si l'anomalie est uniquement produite par des discontinuités des morts-terrains conducteurs. Lorsque nous interprétons la cause d'une anomalie électromagnétique à cadres horizontaux, les profondeurs interprétées sont généralement plus grandes que celles réelles. Ceci est amplifié en présence de grande séparation.

Lorsque nous. interprétons une anomalie élec- tromagnétique produite par une zone conductrice verticale localisée sous une couche de morts-terrains conducteurs: il faut absolument tenir compte de la conductivité de cette dernière.

La concentration de minéraux de susceptibilité plus ou moins magnétique fait varier le champ magnétique terrestre. La mise en plan des Iectures prises systémati- quement sur la propriété permet de déceler des zones plus ou moins magnétiques ou a des formations géologiques ayant une susceptibilité magnétique différente.

Les minéraux de forte susceptibilitj: tique sont la magnétite et la pyr-r'hotine, lesquelles sont généraleu cnt niais pas nécessairement associées il 1 des minéraux économiques. C'est dire que l'association d'une anomalie i ic gnéti que avec unie anomalie é I e_ctro;il', né- tique peut are importantete nuis pas ni;cessairement l'cq;;i se. -4-

r T. v~i i.7 i I.!Ni~ iZrTi%i lVII

Comme préambule, nous devons avertir les leet,. ues que les levés électromagnétiques effec- tues iudi ,uot1t clairement que les morts-terrains sont conducteurs sur cette propriété. De plus, leur épais- seur varie et ceci produit des régions anomaliques caractéristiques de bordure de morts-terrains conducteurs.

Tout en sachant que la majorité des variations électromagnétiques sont produites par des effets de morts-terrains conducteurs, nous avons fait ressortir le maximum d'information des levés en délimitant toutes les anomalies ( 23 anomalies ) sur la carte électroma- gnétique eFfectué avec la basse fréquence.

Sur la base des présents levés électroma- gnétiques, nous pouvons affirmer qu'il y a qu'une seule anomalie réellement évidente et produite par un conducteur situé dans la i'oche. Il s'agit de l'anomalie No. 1 laquelle ;)eut é:t.re décrite comme suit:

Ailow i i e No. I

L'anomalie No. 1 est décelée sur les lignes 0 et 4F. vecs 16 si.ütion 0+00. Dé,;endant si nous inter- pr,",„as ij partir des résultats des levés faits avec la basse i r(.iuttnCe ou ü la haute fréquence, nous (ib(.i'Iliins i'e'. 'ect l vei.i'nt une cOnd llc i:i vl tl:-pii i sseur de l'oi'dri? no .;;1 b Ilii(?': e't. Une pi'oti?nCii?ur de I50 et 60 pIL'li`r. Cette l;kjrrlt.l' des r(!sUlL[it.s est i)r'Ûi>,l)Ienio11t duo le ('i•,i ci.eüi' est court et (iU' l l est t.Nt7 s peu ;'oi;i"., t lie la 1 Htie U ou il l'est de la 1(lliie '+i., .1.;'t 11yHtiie',e reste valable 61ü0.s1 on til`nt cri.,».i' des --H..:.-terrain,; cUn(lucti'lir s. Cette an(i ie a ale,;a ;,; ; t, i'e.,,,:'t di` trou'; rie sul;d«.;o et il y ~:Iur,i i t .( `,~'t;V~l' ~;;.. ~.ii i ~ i,i .• i~ L(ifit~;ui(iui~`~. Il donc 1~or..e;üent ri';.lo,u;nliiC~;' C. ll'liLer de`,usuivre cetticlrr[on.horizon. 1

• J Lt.es astres anomalies décelées ont beaucoup plus l a Carae: ti'r i .~,ue d' e'tre produites par des effets de morts-terrains conducteurs que par des masses de miné- raux conducteurs localisées dans la roche.

Le fait ;lue la méthode électromagnétique ne permet pas de faire ressortir d'autre vrai conducteur évident ( à part l'anomalie No. 1 ) nous incite à croire qu'il n'y a effectiveiiient pas de grande masse de sulfure massive pr:!s- de la surface. Par contre, il demeure que la pr,,sct;ce de masses de sulfures disséminées est encore possiule. Des anomalies électromagnétiques telles que les anomalies \os. 2, 3, 9, 11, 14, 16, 17, 22 et la partie ouest de l'anomalie No. 6 sur les lignes 12E et 16E permettent de croire à la possibilité de sulfures disséminés, soit parce qu'il y. a une certaine coincidence avec des hauts magnctiques, soit qu'ils-sont sur le pro- longement géométrique de l'indice minéralisé connu, ou que tout simplement leur forme et variation avec les différentes fréquences utilisées laisse entrevoir cette possibilité. Un levé de polarisation provoquée pourrait probablement permettre de définir leur nature en autant que l'on utilise une configuration pénétrante. Avant de suggérer une séparation plus qu' un autre, il faudrait étudier les Anciens CVéS de polarisation effectués sur cette pr.yriété.

1 (i.L'' il;: ~ re' approche qui pourrait ('tre faite t l C,orijJ r l; i L':it uGa 10V0 dC? détail P. N. serait de tenter ('ii;>l i r la s t,•i;L' ,tre géologique i•~ l'aide d'un levé mtigi,,: t i e,ue1 re i.a il i l. L(:s e; ;'e ts conducteurs des morts- 1 terrain:. Ir' in; lI1•`;,,:-c'alelrt plus, et nous n'aurions q;;e les Vür'intï6;;s d't'ii015•`„'.ti" iie Cellx-ci. Il est donc ri.,r'ï.`:::1'nt r('C(;,:,;,,nt;(tr (.iC i%e);;t'U i vre la couverture de la propriété 1 avec Itn ea utll[sarrï, un mirgnétoL,tr(' e; J i)rl.': (;5.•i;r nl;c i, ,; , i'.. i?r,:î.1 S i1 1 Oal:;l;;a avec des 1t'CtUi'es {)r i ,.~,.~ 'tous,, 1 ~!., :;., ;) ~.,.(,.,. ~, +.- [?e_-~ plus,c , i 1 est.~ for4•.i ~•~~ .,,(.ti,. i H r(_coln-~ I.;a;,1.,'r c.,p.,,1'o,' l,?5 , i•;I1CI5 ,l 100 pieds dans la r,"; iUrl p„r i,:', ;.;I.;:s i';;... :, .:,;,; de la l~i(,ne dor,-,t,;a- .. . Ci„ i:.•'t);: .,;~,. :;l;;C ',., ,;,.;(;i;S ' ,ûS., i`a}liS croyons que ceci ~( 1, 21 i;; til'.....;., 6;i:; dos 'Ail-idlaqeS an 1.,.'r•'l ('urs Fiorù~l' i:tra , Gl' (i'!; lt;li" l..( ..Lr,:,;,.:;)'e c;,.'ûlùljie~ue etclVelSrtU('.l rei;.l:tît de

G

S1iiVre l'horizon minéralise. Toutes faibles anomalies e i vi; i.l't1magne t iq,,es ou de polarisation provoquée le long de cette structure devraient alors étre étudier plus en détail.

Tenant compte que nous sommes dans une région géologiquement très favorable et qu'il y a déjà présence d'uil indice minéralisé, il est donc souhaitable de véri- fier si certaines variations électromagnétiques obtenues peuvent éê L.re produites par une minéralisation disséminée peu conductrice. Dans le but d'étudier cette hypoLilse, et de déceler le prolongement possible de ► 'anomalie No. 1 nous avons interprété les anciens et nouveaux levés magné- tiques. Cette interprétation s'est faite en se servant des résultats dessinés en profils. L'étude des maximums a permis do délimiter les différentes formations géologi- ques plus ou moins magnétiques. Malheureusement, deux problèmes se posent:

— L'ancien levé magnétique comporte des lectures qu'a tous les 100 pieds. C'est dire que certains faibles maximums sont douteux, car ils ne sont vérifiés que par une seule lecture.

— Les lignes sont espacées de 400 pieds l'une de l'autre. Dans les nét;ieus de formations géologiques à plisse- ments accentués, on peut facilement se tromper Oil tentant de relier les maximmums.

Nous croyons que tenant compte des présents ré5ill l, ,i `. obtenus en irrter'prc'tilrlt los di f; c'rerits levés LGi wSaoLc's verticales et par'fois totales ) il y a tout lieu di: travailler cet aspect plus en pr'OI t,n- „ .. c.~'ur. i'iou!; Vül1s rc.'1Cr0r15 a1a carte magnétiqueimagnétique montrantd i',; i i i,,nù.:t'li l.5 des axes Ghi(jirt.'LIqUt.S pour vous en COii- vailli;l't; ( voir la carte a la fin de cl_'l'apport ). nR•n I ~~• \~_.n.1••\• .•.1 T T i ~,,~~LL,S ï „I,S ;~T ~\I.~.I.II ,.,,1...•~11 .O~S

Le levé électromagnétique nous a permis de faire ressortir qu'une seule anomalie évidente. Toutes les autros anomalies semblent être produites par des efinets dos morts-terrains conducteurs. Il demeure que certaines de ces dernières ont une faible chance d'être produites par des masses de sulfures disséminés ►,eau conducteurs.

Elles pourraient être éventuellement étudier par la méthode de polarisation provoquée, si ceci n'a pas déjà été fait antérieurement.

De sorte à connastre la structure et le prolongement possible de l'horizon minéralisé, nous suggérons de couvrir la propriété avec un levé magné- tique précis et détaillé ( 1 gamma, lectures au 50 pieds sur un de lignes espacées au 200 pieds ). D'après une premi re tentat;; Ve d'interprétation des levés rra ;né., i (lues, il ressor'L des structures géolo- giques Ies ui.'Î I es soi'ti î l:ii j) I Iss es ou faillées, nous sommes assuré que l'on pourrait améliorer cette image avis un levé ;u J l ;;l(lc 4.ta i I i L.

Respectueusement soumi s

Par ,l.ÎelmJ;it Lc.vti ; e (In..). .1

i/...... t~ .~i.^. PU ,,.\ LES TRAVAUX S,11T;,T.~1t,~LS 1

je soussigné, Clermont Lavoie, declare que:

Un levé iilectr-omagnétique ( 44.0 milles ) ainsi que des levés nat,n ticues, l'un en mesurant la cv;;lposall Lt' ver i cal e ( 12.2 milles ) , l'autre en mesurant la composante totale ( 12.2 milles ) furent effectués par une de nos équipes durant les mois d'août et de septembre 1979.

La propriété couverte en partie par ces levés comprend les claims suivants:

Licence Claims Licence Claims Licence Claims

331843 1- 5 335988 1- 3 336010 1- 2 331844 1- 3 335992 1- 3 336042 3- 5 331848 1- 5 335993 1- 5 336043 3- 5 331849 1 335994 1- 5 336046 1- 3 335109 2- 5 336995 1- 5 336047 4 335778 2- 4 335996 1- 4 336048 1- 2 335790 1- 5 363000 1- 5 3360 49 1- 2 335/91 1 336006 1- 5 336050 1- 2 335r)02 2- 5 33G007 1- 5 336108 1- 2 335986 1 336008 3- 5 336110 1- 3 335967 5 336009 5 336 111 3- 5

B.N. sloc "A" 677 . E.M.H..r.i. tnstruGeni. A 7Cx Parametric, MiXl n II. Fréquences dc 444 et 1,777 HL. Cable: 600 pieds. ct?nsl i:rVl tt.': 1 lr ) 'instrument: SCiilLi'ex ;',i-2 ci sursaturation, Sr;tî.`,lt.Vli:é ; ~ ~. . . t . . ~ de 20 ij,li .fJ is~ V~tttJ. tt jtt'tt Ct. 5 iï)Ir nuC I t' r(. GO ty.,i''' 0t:vmi'ti'îC 0-81 6. :,l_'l;s i i.iV itt. de 1(J,

0ii t.' C11 LOi;r., . jours) (,i1los Si;;;nrd 2115 r;;o ÇA„ j 1. .i~ ,1)1~1`..) .~,~1•1~~ il)l't, l l~ l~ I\.i1. 4,.7. 1 l~'/~tll'. ,. ~ . - t. P .Q. jours) Yvon '.)a !1uir't' id iiVi. (,:LC.

J

Par ) ... ioyr'ra. ur5-consrNs: Val (1'Or. 11a'I nna (.lu h;a a a. ra, ai : .awat(• F S V.rlrl(Ir .a.r•ae !.,'; ,h,ui rnur,rh• ( ilhld~, ('.L•1 r l , CM,' lia Ici (di b, i'

CCRTIFICAT

T. Jc, Cî(''tnit)ilt: Lavoie, dculeunczn.t d 109, nuc C.Ci.Che, V(LC (f ' O't , Qujbec a gnadué avec un dcgnc en nj(if.cr.î.ie eu 1965 c2 .C'Eco.Ce Potrlteehit,igue. obtenu en 1968, un deivn: de t11a,Uht 5e en çZ("o;Jtll.s-i.- gtte. a .C'(:,.0i'e 1'au.tc.cl,rccgue et obtenu un doctoncLt 1'it.U. en j<<';;tu,:s,i.gece en 1972 d .C'Uciiveltis.c.té ;deGi.2e.

2. Je au i s ineln(l'e. de .C'Ortdree des Trtg c~.r2 ,<.ecv;.Z du Québec., de V Tils tLtut CcunacLien dus Al.Li1e.)s et It,•::ta.i,Lvcg.ie, de. ,C'A.s.sociatLoit de5 Pnospectewus du Québec et de ta Société d' CxpZonatLon Géophyh.igue.

3. Je rte dc.ticrvs pas, a ne pn.évo.c.t pas neeevo.L't un iiitvtût dans c2a,ün.6 appatLtenan.i d Exp.Conation..s Nona;tda L.tc.e. , ou un .irztcXa dams d' a.t,t.tltes c.ea.ina gu'.LZs peuve.nt avo.ih..

4. Le.s necc'l'1111iT;1(l(ii Co;t.s e.t ,CicteApneta.t(oivs de.c'Lc.te.s dait S cC'. .sont bx(.se'.ea en pCULt,{..e zut, une. 'r ~. ~ e.\iJ('%Gi.('.ilee .(;t'.Iliigue ('t pko~ess-i.oiti~ee.1..e dans ce d.istA.Lct (l; .;'I; 1'n.ov.iiLc.c de. Québec. Une pantie de. Ce.t'- t;. l'-.Y;h % ie,;ee a et:" acgcu,5e en -tant que Cite t2 eovagitc.e Sogueyn.

a VaZ d'On, •Ce 29 sept e1nbne 1979.

/7) C.. i Pitt ; - CCWo•Ce., .—

lor;' ,Wolu...conwils: d Or: OuMiec:

10'1 11H • h1.1111 d )1101t,.. C.111 ,P :1. 41 tJitt In I1VII IH 10 Oil...9 1,4/ 4 vi 1

APPENDIX III

EXPLORATIONS NORANDA LTEE

LEVE DE POLARISATION PROVOQUEE

GISEMENT DE "PHELPS DODGE"

CANTON DE LA GAUCHETIERE

Mini et des Ressources GotiverN,s , . DOCL14:i iachniue

DATE: 2 I MAI MO

No. G.M.: maillisMaalleamalcMENIDOW.I.T.P.R4VG=EnvVr.,36°71

7' Scptcmhrc 19/9 '. , Edwin Gatichcr, IN1ROUuCTION

A la demande de Monsieur Denis Francoeur de Noranda, un levé expéri- mental de polarisation provoqu6e a été effectué sur le, gisement de Phelps Dodge dans La Gauchetière. Le but du relevé était de mesurer les anoma- lies provoquées par le gîte de sulfures massifs et les comparer aux mesu- res du gîte, le tout afin de mieux structurer la campagne d'exploration loin autour du gisement.

I. PROPRIETE, LOCALISATION ET ACCES

Le gîte est situé à urge vingtaine de kilomètres à l'ouest de Matta- gami. On y accède par une route gravellée jusqu'à 1 000 pieds du gise- ment. Ce gîte est situé sur la concession minière B.M. bloc "A" 677.

2. LEVE DE POLARISATION PROVOQUEE

La polarisation provoquée est utilisée en général pour localiser directement les zones de sulfures et de graphite. Ce relevé permet de déterminer la résistivité apparente et la chargeabilité sous les profils.

La mise en plan de la résistivité permet de déceler directement les

zones conductrices; toutefois, cette valeur est fortement influencée par les variations de conductivité et d'épaisseur du mort-terrain. La char-• geabilité permet de sélectionner les zones de sulfures, massives ou dis- séminées, et cette quantité n'est par directement influencée par le mort- terrain. Dans les régions où le mort-terrain conducteur est très épais, la chargeabilite mesurée au-dessus d'une anomalie causée par des sulfures massifs peut être aussi faible que 5 millisecondes, alors que la chargea- bilité au-des ;us d'affi urements de roches non--minéralisécs peut être aus si élevée que 10 .l 20 nii 1 I i•,econdc•s. Il est toutefois possible de recon- naï tre lc s an ,,,al irs c--m. ce', par les sulfures (ou graphites) sou!, le mort

lorrain en étudiant coi,c:t,rrt , ..t nt les cartes de chargeahi 1 i ti et de tivité. 2.

3. 11;11b'/1UX Li-! !:cTU!"_S

Le travail sur le terrain a consisté en deux jours de mesure, le

levé étant interrompu le deuxii'mc jour à lh PM par la pluie. Trois lignes furent mesurées, soit les lignes 0, 4E et 4W. Le gisement est situé sous la ligne 0 3 la ligne de base et comme il est très court, il ne s'étend pas jusqu'aux deux autres lignes.

Tout le levé a été fait avec une configuration dipôle-dipôle du transmetteur et du receveur. Sur la ligne 0, nous avons utilisé d'abord un dipôle a = 100 pieds entre les électrodes et ce avec des séparations n =1 à n = 4 ou 5, puis a = 200'aux séparations n = 1, 2 et 3. Sur les autres lignes, nous avons fait le levé avec un dipôle a = 300' entre les électrodes et aux séparations n = 1, 2 et occasionnellement 3. Les con- figurations sont expliquées dans la légende des pians.

4. PRESENTATION DES RESULTATS

Les résultats sont présentés sur trois pseudo sections ci-jointes (308, 309 et 310). Les résistivités sont dessinées au-dessus de la li- gne, et les chargeabilités en-dessous. Nous avons dessiné les trois li- gnes à la méme échelle pour mieux permettre les comparaisons visuelles.

5. DISCUSSION DES RESULTATS

Nous discuterons des résultats ligne par ligne.

Ligne 0

La ligne traverse le ni>enient en plein dans son centre. Les résis-

tivit.el; ',ont. tri-, ho ws sur la première séparation. Elles

varient autrair de ;?O ohi -is tres, `oit entre 50 ohiir;-mè tres et IlO ohms-

IIs.'trus. lll.ji'entent aux separation`;. plus grande>, mais 3. J

restent très basses, erg bas de 500 ohms-mt'!tres.

Le gisement est marqu6 par une faible baisse de résistivité, près de la station 0. Cependant, l'anomalie a peu de relief et comme c'est presque toujours le cas au Canada, elle n'est pas diagnostique.

Aux deux premières séparations, la chargeabilité mesurée avec un

dipole de 100' sur la ligne varie entre 0 et 2 miliisccondes, excepté sur le gisement où elle monte J 4, 5 et même 6 millisecondes. A cet en- droit, on observe une anomalie tel que donnée par la théorie pour un corps de sulfures recouvert de mort-terrain conducteur. L'anomalie est faible mais parfaitement définie et on peut la reconnaître sans ambigui- té. Les lectures aux intervalles plus grands que 2 ne sont pas aussi

fiables.

Nous avons refait quelques lectures avec undipôle de 200 pieds avec des séparations de n = 2 et 3. Ces quelques lectures, inscrites entre parenthèses, concordent aux mesures effectuées avec un dipôle de 100 pied!

Les deux journées, et cri particulier la deuxième, étaient caractéri- sées par des orages électriques, aussi certaines lectures de chargcabiliti aux plus grandes séparations sont marquées d'un point d'interrogation.

" Lignes 4E et 4W

Ces lignes ont été faite,; avec un dipôle de 300' et aux séparations 1 é 3. Nous avons observé une anomalie de chargeabilité pour n = 1 sur la ligne 4W. Aux plus grande séparations, le bruit de fond (g,"'ologique et instrumental) augmente et (MW:, rio pouvons plus dec.e l e r l'anomalie.

CONCLUS I Oft

Ces c•'.'.;ais ont (It' outré .i notre ;at.is ae:tion que:

1) U11 rt'lt`vt• de t N )larl'•,"1i 1oII IOi) ou :l)O' ) ti It tl; hl+)fnhurs ctxtseNs: Val d'Or: Qu+`,G.'c: lti'+ NI.. (:ht lit ;'1.',1 , ! uit1111 fnütllf' 1,'„011t tr ' i. ,. y i,.0 1, , (:.rl G1V il :L.HIRUrIul+' Uut t,,t. t ,.in ..''f' ..'NH ici (B1911','!) 1,114 1rI (,111i) !dill 14425

APPENDIX IV

RAPPORT GEOP;iYSIQUE

LEVES ELECTROMIIGNETIQUE ET MAGNETIQUE

PROPRIETE DE EXPLORATIOtiS NORANDA LTEE.

PR OvET PHELPS DODGE ( No. 2)

CANTONS: U.,veller et Dc;Gazures.

tii'ovl'tct? de Qut:ùec.

Ministèrn !'Energie et des Ressources GouverrRb.imurlr du Québec Docuriiniation Technique 2 1 198D MAI _ DATE: 6Q71 No. G.M.:

Sc p i.t'il,+) t'l.' ! `l l .

„.~.. ,.,._.. ~ ,~~ii~T ..)~.i,U~

Dos levés électromagnétiques A cadres iiJrizo,it6ux et magnétiques furent effectués sur deux ;ïr'opriC!tés appartenant d la compagnie Exp1 or;, L ion Nora nd<< Ltée.

Le but de ces levés consistait à délimiter sur le terrain des zones conductrices ss. produites par des horizons minéralisés.

PROPRIETE, LOCALISATION ET ACCES

Les propriétés que nous avons levées en partie sont situées dans les cantons Cavelier et Demazure's, région de Mattagami , P.Q. et comprennent les ClaU S suivants:

,_. tirol~ ~i~'. de C lai1 m:i Licence Claims

~

Can,:en Cavelier 334568 5 336137 1 - 4 336147 4 - 5 3361e3 1 - 5

336033 1 - 3 336034 1 - 3 336035 1 - 3

L'accès aux propriétés n'est possible en été qu'en hélicopt!rc. Nous avons voyagé les équipes géophysiques soir et matin de la ville de Mattagami.

TRAVAUX EFFECTUES

• Au mois de Septembre 1979, un total a de 10.72 milles de ligne fut levé par la méthode électromagnétique à cadres horizontaux et 11.8 milles par la méthode magnétique. Lors du levé élec- tromagnétique, l'instrument employé était un Apex Maxmin I I , opérant des fréquences de 444 et 1,777 avec un cable de 600 pieds. Lors du levé magnétique, nous utilisions un magnétométre du type Scintrex MF-2 mesurant la composante verticale du champ magnétique.

Sur les deux réseaux de lignes à intervalle de 400 pieds, les lectures électrom;;agné- tiques étaient prisent normalement au 100 pieds avec des lectures plus rap;il'ochées en présence d 1 anoal i e; tandis que les lectures magnétiques furent prisent normaleü ent it intervalle de t0 pieds.

Le C.;axi,iin II fut Calibré sur un terrain neutre avant et apt•s les levOs. Le i..aut., ;:o;,,~ tre ~ ut calibré sur le terriiin (` . ;:,late; los ll:c;.ure:; le long des lignes ont été i~i.1 V~I~!:i~i l'une d l'autre en éta- , blissantbliJsant ues SLtal.iùils deU~de basele lo11;-; de la 11 J~ih de . base. rll' ^ 1• C"r) + t~i \' "''' l' l~~f:\ DI1~)~T rri•J r , .4~.1,.. . ~ ~)lril 1. _J r'...~i~lJ.-. .) . r ., I , lr, •,d, ~~l_Vr J `r~_. S

La ii.l! tiio(IC l'1 11C Lroa giil' L i('lil' û cadres r liï+i' iZGii:a:,ti:< permet do délimiter les zones conductrices Ciül pl!.iVl.'ni. t!ti'l!, Liais pas nécessairement, ut:s masses de ifiint.'rau\ conducteurs. Los priilcipauX liiin~'rai;X ayant la propriété de conduire i'éll?CtriCitl' sont la pyi'ite, la p;yi'rhü)J`,liltl, la ChlllCopyrite, le niCr:1'l ( mais pas la sj+tti. il.'ri te ) Lt= le graphite. Dans certaines réions, le mort-terrain est; conducteur et ulil? bonne expérience est requise pour reconnaître la cause des différentes anomalies obtenues. Lorsque nous interprétons la cause d'une ûnolüal i t.? électromagnétique d cadres horizontaux, les profondeurs interprétées sont généralement plus grandes que celles réelles. Ceci est amplifié en pré- sence de grande séparation.

Lorsque nous interprétons une anomalie électromagnétique produite par une zone conductrice verticale 1 oca1 i :.l e sous une couche de morts-terrains f• conducteurs, il .11 a a. s0l iü3nt tenir compte Ce la COii- ,. r duc t i v 'i i,L Oc! cette dcrn i re.

La C(7ilCt:litrat;l./n de minéraux de süsct_'p- , l i i) i i 1 tt' plus ou moins magnétique fait varier l k.' cnai.ip ülaOii.:;,iqi;l) l.l_1i'r'(ii't'.. La mise on pian t;es lectures prise,; s,lr`:i;lat',..Ll'it1•:smùlit :i11!" la pi'opriéial pl_'rü.eL Ci('_ Cïel.l'1i:i' (•t':i 11i1;.`.: Utl moins iiitÀlji!titil.l? s ou i1 Ci.'s f C)r'mal: i (} . . ti.'ir 1 a i e\il.'s iayafil, une illSLltp t.l Ui 1 i t.t' i..ulJilh- Cl i i i l.'i'l.'ill,l!.

Î+l'. i,..ill'i'l.u`\ l.h Corte ~..i.'..(,.!`,i1, iUi1 i l,l..' ii.11•~i.11~....';l._' ;.1.'i~1• 1t. ..~•.•i l'.~'J•~I l.i' 01. id rr j.ii i{ . J..•l: .1 1".i t1 1it' ~ .. :l'l. .,. .- .• ai..~..1 i' ~llt!`l . lil:. i. Ci , r t 1 1 U!.~:lll. 1 ._i.~. .•ii ,i .. .. ...ir•~. . IL' i.... ) ill~1.I- l:lil! ~ uv1 a lilil) ..ial - i1: ,'.l'....+' i., 1•' j.'.~it. 1î ;1'l: 11.1~i11i'L..i1t1: li~l'l î:a i~:.i1i û:SCRi,Y, ;0;; ET :N;i: RrRETltiTION

Les lovés électromagnétiques ont pertuis de déceler plusieurs neri zons conductrices. que nous avons localisés principalement sur la carte électromagnétique ( fréquence de 444Hz ) .

A l'exeption de l'anomalie No. 1 qui -a une valeur de 3 m...... et décelée sur le réseau de ligne clans le canton Cavelier, toutes les anomalies seraient produites par des zones conductrices ayant une conductivité-épaisseur inférieure à 1 mho. Le levé électromagnétique â haute fréquence 1,777 Hz est difFicile à interpréter due à de fortes variations des lectures. Nous vous référons donc aux résultats de la basse fréquence sur lesquels, nous avons forcé l'interprétation et localisé tous les axes possibles d'anomalies.

L'anomalie No. 1 serait produite par un conducteur dans la roche lequel est magnétique ( 4,000 gammas ) . C,; le délimite principalement sur les lignes 4L et vers la station 3N. L'interpré- tation forcée des résultats de la basse fréquence laisse entrevoir une extension possible vers l'ouest; ruais il n'y a aucune coineidence magnétique dans cette région. Un trou do s,,,;qe devrait y être implanté si ce n'est pas dei ja t.

Ligne: Station: 5 CON 2,':)V Plongée: 50° Longueur: 460 pieds.

- J

1 Les axes des anomalies Nos. 2 à 4 suivent plus ou moins les contours magnétiques; i;iais j semblent ::out de l:: fille parallèles 3 l'axe de 1'cnomalie Na. 1. :l y e donc des chances qu'elles soient produites p.,r de faibles ttueurs de minéralisation disséminé 1 dans la roche. Ces anomalies étant dans une région de morts-terrain„ conducteurs, elles pourraient tout aussi bien erre produites par des discontinuités des morts- terrains coac;lc moeurs.

Les mêmes arguments s'appliqueraient pour les anomalies 8 à 12 décelées dans le canton Demazures. Avant de recommander des travaux de sondages il serait préférable de vérifier la cause de ces ano- malies en y effectuant un levé de polarisation provo- quée.

1 C(1!;DLDS.O". ET R!"COMANDATTONS

...J Les levés électromagnétiques nous ont , ,_ perItti s di? localiser une anomalie qui mériterait d ~ ~re SoI1G0e si ce n'est pas deja fait. Les autres anoli;alies ~ 2 il 12 p,,nvl.4 <,ussi bien are produites par de faiùle ~ (jllt~4il,l' t,i'. t.,li;_t'~,liS~,~iUll diSsïtl(:'i' G:, la roche ou. pat' cieS i, e',c:o;ltinlil Lc.s des morts-terrains conducteurs. ~ Nous reeo:,;,iai;,.Gns fortement si la ç;éolOgie- est favorable cït L i,o ro(1 , d'y effectuer ulî levé de polarisation }7rovoÇuC2e per;;'i:i,rait probablement de dcfinir ,ia cause de cos anomalies.

,~ r'~ j' Par ~ 4tvt'i„~ifiï l tilva;li ~ (l.û. a

,• ~.,- - • ~, ~ C ,T -+ ~ I~~l... ti..;1, .lr,, 1 VVR LES i ~\/°\`~Î~,~~( ST/„ V,,\, r\LS

Je soussigné, Clermont Lavoie, déclare que:

Un levé électromagnétique ( 10.72 milles ) ainsi qu'un levé magnétique ( 11.8 milles ) furent effectués par une de nos équipes durant le mois de septembre 1979.

Les propriétés couvertes par ces levés comprennent les claims suivants:

Canton Licence Claims

Cavelier 334568 5 336137 1 - 4 336147 4 - 5 336148 1 - 5

Demazures 336033 1 - 3 336034 1 - 3 336035 1 - 3 ♦ • M~

i E.M.N.L Instru;;;e;1;:: Apex Parametric, Maxmin II Fréquences: 444 et 1,777 Hz. Mies: 600 pieds. Se,lsitivité: 1% . 1 j ~;i`i1,i •1~h~1:,;i;. ScintrhX MF-2 d slil'sûtliration Sensrtivltl:: 20 .k,aü,MZ;S-

0 r,1,•r'u- ,. tl'Ur'S: G:11,., Sir;;ur+d 2175 l+;;r: l',il6odt.!ll.1iho, Apt.309 l,uc_lrec. ~• r1 r, ,+. 1 ! • ("~ i l)r.4 411~r• i\• 11. No. 1 7 Ei~ hnr.)l~j+(„ Il ,1 ` (i • ~ ,~ ~ • . . '~ ^ t~u~ll~f I Î r+l' 1 J 1 - 'r

2 f1l /~ ! ` Par ~: i ~ .i'ii,.r~t L

C(-r;rrFlCAr

7. Je, Ci .'•ahio;l t t.ïVo (:., dt'llh'11.'IaLt a 109, hUe C~CCile, V:Lt'. d'~~; , Q:ljbec a. gr,at'cc avec un degné r.Sc.A., e;1 pt:o<:o q.ie L:;: 7965 a .C'Eco.Ce Po.CI!tec7lrLLque. J'ai. , a , , ~ ! •, ,. ~ l , i ~n „ , C b-4t,:CL L iI 7 ~;JJ, t:;: <«..j..l. GL IJ:a.C.tLise en .f ~C,fJ,i1s.L- que a C'i:e.o,:e 7'o t'tl,:citnLque et obtenu ua ciocLora.t

fil.Û. ea JeophJsiGU.t'. en 7972 d-C.'Ui.(.ve%Js-(:te gcG•iLC..

4. ~• 2. Je s(Li.S Ilie}i.:).':e de VOAd1Ll. des TngCi;.CetUts du 2cLwec, n~- ♦, 1• I• 99 de. ~. !}is t-t.aLt.~-: ~. C~,ll(Lc, Canadien t,e.}1 de-s +t~üie'S et ~1~2a,i7.c ~.ci.r,.;;•Ce, de .C'As,soe,i.caio;i des ('-mspccteL✓tz du QuL:bee et de .Ca. Sociaé d' cxp.Co iLa.tio}1 &;op7t fis.tque.

3: Je ne d6tLe►is pins, et ne pne:vo.it pas necevo.La un .LrLt&êt dans ces aai.m.s appah.tenawt d Exp.CojLa-t.Lon.b Nona}ida L.té.e. , ou un .L}Lt ~uce,t dans d' auth.es cLailns • C(u'd,t5 peuvent avo.C1L.

/ 4. Les heeC+; ,i'Lt LOiJ•s et t1 Lt.'Jtf?tiCt.C011s ethLtes iict}LS ce ':cif?pJ%Lt sont basees e;1 7:)CULiCe dUh. une expJ:i-Ceil.'o ti..L.:i.:ili:le e•1. p:4ess•ColUl..C-h.e dans ce dL.s.t :.i.c•i. P':.i?V.i;a'..e de QiLCUCC. Uae pCiii.tCe de

cette L:mj,~ ( i,:CC i;C L',t,i acquise. en tant que Che . . VLIIj 1:'s•C%~'.:: iL .l.ü, CO~ y...i~C~J Si/C(iLelll.

Signe i ViLt'. (:' ok., 1„ 77 -Septe:lib,%e 1979,

P1,.!,,: . ' • ~--- ,~ ; ~. ~ ~.:,«•,:~C L.,v~'.;., i';.,J.

Gouvernement du Québec ,Ministère des Riche-.ses naturelles r Direction (pineraie da la recherche fioologique et mineral. LEDENDE DE LA

*~ P; ;~. ►fit' 4 . SYMBOLES LITHOLOGIQUIuveineïllent du Québec Dcuan€ tut o:) 'techniques°

DIXIE / 1 3~U J1 .. ROCHES VOLCANIQUES ARCHEENNES NtrG,oh f V 1 Roches volcaniques indéterminées [ M Roches métamorphiques indéterminées vi Roches volcaniques felsiques eu 1 m Schiste intermédiaires V2 Rhyolite Roches hybrides t V3 Trachyte Bruche ignée V4 Dacite Migmatite Roches volcaniques in'ermédiaires OU mafiques M6 Gneiss d'injection Andésite M7 Gneiss Basalte _ BKI Amphibolite Roches pyroclastiques indéterminées M9 Granulite V4 Tuf MO, Mylonite Quartzite VIO Agglomérat .~1 M12 Marbre

V13 Roches volcaniques ultramafiques

ROCHES INTRUSIVES

ROCHES SEDIMENTAIRES ARCHEENNES 1 Roches intrusives felsiques indéter- minées S Roches sédimentaires indéterminées IS Syénite SI Conglomérat Granite [ S2 I Arkose IA Monzonite uuartzifinre (Adamellite) 1M ~ $3 Grauwacke j Monzonite Argilite, shale, ardoise, phyllade 1D Granodiorite S5 Quartzite 1P Pegmatite Formation de for 1B Albitito I S7 Calcaire et autres roches de carbonate X j Aplite 12 ~ Cr a nophyre FORMATIONS DE FER ARCHEENNES ER Rhyolite et felsite intrusive 2 Roches intrusives intermédiaires in- [ Fl j Formation de fer indéterminée déterminées F2 Formation de fer sulfurée 2T Diorite quartzifère (Tonalite) [ F3 1 Formation de fer oxydée Diorite F4 Formation de fer carbonatée 21 Lamprophyre intermédiaire 3 Roches intrusive:, mafiques indétermi- nées Gabbro ROCHES SEDIMENTAIRES PROTEROZOIQUES 3N Norite Anorthosite 3R f P Roches sédimentaires indéterminées 3l Lamprophyre mafique ou indéterminé Pi Conglomérat 3D Diabase * Arkose Roches intrusives ultramafiques Grauwacke 4P Péridotite P4 Quartzite et grès 4H Hornblt-ndite P5 Argilite, shale, ardoise et phyllade .45 Serpentinite L P4J Formation de fer [ 4D I Duni te f P2 -1 Dolomie et autres roches r carbonates [ 4Y I Pyroséri(te 1 P8 Tillite Lui Lamprophyre ultramafique

ROCHES SEDIMENTAIRES PALEOZOIQt1ES * Dans certains cas, utilisé comme suit:

Calcaire 3D1: diabase de première génération 302: diabase de seconde génération DQMPILATI+Gi`!I GÉCSCIENTIFIQUE

SUFFIXES POUR STRUCTURES PETROCEAPHIQUES ET SUFFIXES POUR LES SUBSTANCES D'INTERET ECONOMIQUE TEXTURES CARACTERISTIQUES

L M porphyre (plus de 50% de phénacristaux) bréchiforme MINERAUX ET ROCHES p porphyrique (10% d 50% de phénocristaux) ® brèche tectonique Am amiante * variolitique, aphérulitique ® brèche intrusive Ap apatite brèche pyroclastique cousainée ® Asp arsénopyrite Q amygdalaire ® brèche explosive Ay anthophyllite Ba barytine * è apinifex 11 brèche de coulée Bi biotite * rubanée ® hyaloclastique Be béryl 4 cisaillée Bo bornite Bs bismuth turbiditea Cor corindon Cp chalcopyrite Cn chalcosine SUFFIXES POUR LES MINERAUX DES ROCHES Ch chert, jaspe b biotite j carbonate a ataurotide Cr chromite c chlorite k séricite-paragonite t trémolite-actinote Ct cordiérite d disthène m muscovite u amphibole (indéterminé) Cv covelline e épidote n néphéline v *e veine de F1 fluorine f feldspath (indéterminé) o feldspath potassique w tourmaline Ff formation de fer g grenat p plagioclase x sillimanite Fp feldspath h hornblende q quartz y pyroxène Gn galêne 1 talc r chloritoYde z zéolite Cp graphite Hem hématite ** Utilisé avec un autre suffixe de minéraux des roches.. Il ilménite Ex.:: vq: veine de quartz Ilm ilménite Mt magnétite Ma marcasite

SUFFIXES POUR LES METAUX NATIFS Mc malachite Md minéraux décoratifs Sb antimoine Cu cuivre Ni nickel Mi mica Ag argent Sn étain Au or Mo molybdénite As arsenic Fe fer Pt platine 01 olivine Ba baryum Li lithium Pb plomb Pc pierre de construction Be béryllium Mg magnésium Ti titane Pi pyrophyllite Bi bismuth Mn manganèse W tungstène Pm pierre ornementale Cr chrome Hg mercure U uranium Pn pentlandite Co cobalt Mo molybdène Zn zinc Po pyrrhotine Py pyrite Ra minéraux radioactifs SUFFIXES POUR COMPOSITION, ORIGINE ET ALTERATION Su sulfures (indéterminés) COMPOSITION ALTERATION Sd sirérose Sh scheelite a felsique r amphibolitisée p carbonatisée Si silice Sp sphaléritc 0 mafique • aillclfiée X serpentinisée Sm spodumZne r ultramafique albitisée r altération potassique ▪ Tc talc • pyritisée r altération indéterminée Ta tantalite ORIGINE e épidotiaée Va vanadinite

e sédimentaire 8 porphyritlsée

r volcanique + chlorltlsée

M intrusive A séricitisée

SYMBOLES STRUCTURAUX NOTES On a pu utiliser 0 pour symboliser stratification affleurement isolé AFFLEUREMENT horizontale, sommet déterminé. aire d'affleurements Le symbole des contours géologiques présumés a été utilisé dans certains cas comme isograde de méta- CONTOUR GEOLOGIQU£ connu morphisme. probable ou présumé Parfois, Î est utilisé pour symboliser un sondage d'après levés incliné avec projection horizontale; profondeur géophvslaues inconnue. STRAIIFICATIO::: •y 1) Sommet T y 9l f horizontale, inclinée, verti- cale, renversée, pendage non déterminé SYMBOLES DE SONDAGE détermtné Sondage incliné avec projection horizontale: 2) Sommet -f- / / / horizontale, inclinée, verti- i I••a non déterminé cale, pendage non déterminé. profondeur connue, profondeur inconnue.

SCNISTOSITE OU CLIVAGE: Sondage incliné ave^ projection horizontale horizontal , incliné, vertical, 1) (plan S1) -r— / de la lithologie recoupée. La profondeur ver- pendage non déterminé ticale du mort-terrain y est indiquée (en mè- 2) (plan S2) horizontal, incliné, vertical, v7 pendage non déterminé tres) a gauche et le numéro d'identification

du sondage au-dessus ou a droite. Ce numéro horizontale, inclinée, verticale GNEISSOSITE 1 / / 5l d'identification correspond exactement a celui

CONTACT DE donné dans les dossiers de travaux statutaires Les pointes indiquent 1m RA ISC. DE DE ~ . /~, sens croissant du méta- consultés et ne figure sur la carte de compi- METAMORPNISME Y~ morphisme et l'isograde ~* marque l'apparition d'un (des) minéral(aux) lation que lorsque lea journaux de sondage dont le(les) nom(s) sera(ont) indiqué(s) du côté de l'agrandissement du métamorphisme; ou sont disponibles. encore l'isograde marque la disparition d'un (des) minéral(aux) dont le(s) nom(s) sera(ont) Sondage vertical: la première couche litholo- indiqué(s) du côté où ce(s) minéral(aux) est (sont) présent(s). gique rencontrée y est indiquée a droite et le

++1- — _-, ~ (obtenu par photo- numéro d'identification du sondage au-dessus LINEAMENT interprétation) 7C horizontale, inclinée, verd- du symbole si un journal de sondage existe dans LINEATIONS / ir /~ 0 f cale, plenar.e non détermi ée lea dossiers consultés. PLI Sondage pour alimentation en eau: la première plan axial déterminé, présumé 1) antiforme couche lithologique rencontrée y est indiquée plan axial déterminé, présumé 2) antiforme déversé a droite et le numéro d'identification du son- plan axial déterminé, présumé 3) synforme dage au-dessus du symbole ai un journal de son- plan axial déterminé, présumé 4) synforme déversé dage existe dans les dossiers consultés. Dextre, senestre; utilisé 5) pli d'entrainement avec ou sans plongée et pendage SYMBOLES CS INSTALLATIONS MINIERES 6) axe de plissement Puits de mine (avec chevalement); avec plongée 0 0• vertical, incliné; ❑ FAILLE, ZONE DE CISAILLEMENT 0 Puits abandonnés Puits d'exploration (sans chevalement); ❑ ii~i~iiiiii iii connue Q 'vertical, incline; .4,-4, d'après levés géophysiques - -'' iiii •c -' présumée X * Gravière ou sablière;'en exoloitation. abandonnée inclinée Mine â ciel ouvert iiiiiiiiii! ioi avec sens de déplacement; CD a a Tranchée l ce e isp@emen indique le côte affaissa Galerie d'exploration â flanc de coteau (adit); en usage, E E faille de charriage; abandonnée Diu les °ointes sont sur ~ --LZ:1 Galerie de production â flanc de coteau; le côté relevé ► •n usage, abandonnée

.., ri> ►a.a~ .i faille de charriage présumée hantlers souterrains, profondeur en métres R"R DIACLASES L • Bâtiments

ni horizontale, inclinée, verticale. Nolde de mineras

système multiple (7r)";7,2 Parc a déchet SYMBOLES D'ANOMALIES CEOCHIMIQUES ET SYMBOLES SYMBOLES DES ANOMALIES GEOPHYSIQUES

D'ANOMALIES MINERALOCIQUES DES ALLUVIONS

LEVES DE RESISTIVITE SR: sédiment de ruisseau axe de hautes valeurs .a.-- -RM-Ar— SL: sédiment de fond de lac axe de basses valeurs * A SI-6— SO: sol LEVES DE POLARISATION PROVOQUEE EZ: eaux souterraines axe de hautes valeurs 11-----110- -6— ES: eaux de surface LEVES DE POTENTIEL SPONTANE A--A PS -e — VO: végétaux LEVES ELECTROMAGNETIQUES R: roches 1) Aériens ----suc-i-- conducteur ML: minéraux lourds (battée) TRR: TURAIR FA: forage alluvionnaire RPE: Radiophase, E-phase Les zones de fortes teneurs géochimiques sont délimitées par une EMC: Systèmes conventionels ligne de contour renfermant l'identification du genre de levé et AFG: AFMAG interrompue par le symbole des éléments d'intérèt. EMM: Systèmes multifréquences (excluant l'INPUT) r-{-1 i EMe : Largeur d'anomalie rapportée; le pointillé t t indique la direction du levé.

Système INPUT

® , échantillonnage isolé 47 2 canaux (avec produit conductivité - épaisseur, mhos) • : échantillonnage de bloc erratique • 3 canaux

4- 4 canaux Sondage alluvionnaire, avec profondeur en mètres 12a.a 4- 5 canaux (A Rauche). On remarquera que les sondaEes allu- 6 canaux vionnaires sont reportés sur la'couche 3. 1J anomalie magnétique colncidente

anomalie magnétique juxtaposée

2) Au sol 0--4 T RM -0— SYMBOLES GEOMORPHOLOGIQUES

Stries glaciaires EMH: Systèmes è cadres horizontaux Sens du mouvement connu (avec produit conductivité - épaisseur, mhos) k et inconnu Moraine frontale EMV: Systèmes A cadres verticaux

Sens d'écoulement connu TRM: Systèmes TURAM Esker „o` b. et inconnu VLF: Systèmes A très basse fréquence Limite de transgres- sion marine ou de J Connue, présumée LEVES MACNETIQUES (axes de hautes valeurs) submergence lacustre 1) Aériens —a AIE ■

2) Au sol —■-SOI -a LEVES CRAVIMF.TRIQUES

a) Haut gravimétrique HG SYMBOLES DES INTERSECTIONS ET ZONES MINERALISEES E) Bas gravimétrique 8 Identification de la substance, teneur et LEVES RADIOMETRIQUES OU DE SPECTRUMETRTE DES RAYONS CAtvtA -/ -1 5,1lp/I Au/ l,lm U: Uranium longueur de la minéralisation indiquée par U I,11X Cu/0,5m Th: Thorium le sondage. Th Zone minéralisée: U/Th: Rapport uranium/thorium U/Th

Tot: Total lot Nom de la zone (s'il y en a un), identifi- Zone de Sorter K: Potassium K 57 000 t - 11, 56 g /1 Au cation de le substance et réserves connues.

~► Veine ou amas minéralisé

• mai 79 ~ • NAM ND DRILL CORE LOG LATITUDE B.L. 0+00 PROPERTY Phelps Dodge 42 DEPARTURE 6+00 E Tests Magnetic Corrected Depth Dip Bearing Bearing CLAIM NO. 335148 cl-3 ELEVATION Surface 200' 60° HOLE NO. 79-1 400' 52° CORE SIZE A2 BEARING N45E 600' 51° ode test STARTED 29 seotembre 1979 700' 540 DIP AT COLLAR -600 FINISHED 5 octobre 1979 TOTAL DEPTH OF HOLE 716' FOOTAGE - ASSAYS C`J?4, L` ~G TH. SArMOPLE FROM TO MEnistbrocdeditnergie et des Ressources FROM ; TO Gouvernement du Québec ~ - --- ~ . - .. . Documentation Technique 0 72 Mort terrain 2 t MAI )ÿ$ü SiO K 0 Na20 Mg0 ran pp(t) • DATE 2 2 . ~ ma, at& 36071 ~ t . ~

72 142 Rhyo1 i tP rhloritPiyçp (IV) -1- 13903 79.6 0.5 0.1 3.4 0.2 4.0 72 142

Roche g'ris-vert, grains aphânitiques I ~

chl <10%. veinules de calcite mm d'épais. Plus en

plus chloriteux à 139' 15% chlorite.

i 142 152 Rhvolite chloriteuse (V20) -2- 14001 65.1 0.2 1.1 6.5 3.2 7.6 142 { 152 . 1 ~ Roche légèrement verte, chloritisation uniforme

Roche plus tendre, veinules de calcite <2 cm, i !

grains aphaniticdues. ,

152 161 Rhyolite porphyrique (V 0) -3- 14002 61.6 0.1 2.7 2.8 3.9 4.2 152 161 j 9.0 2 . Rnche fPlsique. â grains aphanitiaues .

CO`rRAcTOR Benoit Drilling LOGGED BY Mp•rr. Rni evert

S;, 2 de `; DIAiJIOND DRILL CORE LOG sp; '1o. PROPERTY Phelps Dodge !'2 7G-?

__ c:_ SAMPLE ~ -= Fy r :,V = DESCRIPTION '_ y ~ _ N0. • f ~O P^.0 .,, -~ _ t , I 1 ! • - Chloritisation ‘10%. ohénocristaux de fPlspa llç Si0 K20 Zia))ag-0 C'a0 Fe (t) 1 2

~ 1 2 m^~ de 20 à 30~ - • — ( 1

. '

162 f 168 Rhyolite chloriteuse (V ÿd) • ' i _,_,_ , ; 2

! i . • '

; { 168 178 Rhyolite porphyrique (V2 Q) (idem 152-161) -4- 14003 ~0. 7 0_.2 3_4 - 3 1 5 4 1 a s ' lb2 ' v 8 _- _ ~ } ~ 190: chloritisé à 60% ! i 226: riche en gtz , ` ! - i ~ 1 178 , 278 Rhyolite chloriteuse (v2,0) (idem 72-1.4.1) -S- 13904 55_9 0 1 0_1 3 n fy. 7 ` 4.6 ! 210 236 ______

yeux qtz

3de 6 DIAMOND DRILL CORE LOG PROPERTY Phe10 Dodge 42 • 79-1

....-_ __ _-- .:. ::: T- DESCRIPTION • i. \0.NO. I Ï I ..... =_-" !O ! ! Ca0 'Fe(t) ~ F-^. J SiO - ` K 0Man I Na 0 • 2 2 G f i I ( 71 _3 ~ 1.6 1 4 4 ~ 9a2 309 292 ! 309 ` z3hsrnl i fig.~ nnn-41xfi'g rbc (o r2~? -8- ~4005 ~ S Q 4. 1 : ; . ~ , ~ I I~ : • . ~ ' 309 ' 328 Rhyolite très chloriteuse. (VZ 0 (d): rorLe vert-fan.rP. ~ . tendre • • ! 1 • i 328 ' 331 Rhyolite (V~ _9_ 140Qti S(1_R [)A 0 1 ' 10.8 (0.1 I 7.3 ` ~09 1 '78 ~ 1 ~ ! ! ' Rorhe blanc-gric _trâe r3u pP graine aT,1,ailtilu6c . j

331 344 Rhyolite très chloriteuse verte-noire, très tendre -10- 14nnt Sl A 1.9 n9 5k_.4 0.1 1i 6.7 1 331 344 1 (v 200) rh1rrifiisé, encirua.oc prércntco Par endroit i M Î _. , 344 ~ 377 Rhyolite chloriteuse, (V ), grains aphar,itiQyes -11-14nn8 S1 7 1_0 0.1 ' 9.7 1.9 16_7 I3214 377 3 2 ( • i 363-371 chloritisé â 70% .

t ' n _1 1F 9 !377 '3R1 . 377 + 381 Rhyolite rh1nritg.itcg.-fiairgt,o,., (v4,0, il -12- 1 009 29.5 0.1, 1-5------10e6 f 1 i ' contact net 600 /A.C. . , ; 1 E roche noire, très t-ndre _d aspnrt rh.l.nrit-t»ce , ~ contact npt inf Arlo /A_C • I . '

Ss' .. •=:.4 DIAMOND DRILL CORE LOG PROPERTY Phelps dodge 42 .. 79-1

_^ ::=....1%1 ..--- .. ~' _ c SAMPLE D_SCRIPTION N0. • { AU OZ AG OZ °io Cu %ZN `~ ti1 : == ~~ :0 i ôPB r '~ i + i ; • Si0_ K 0 Na 0 MgO CaO Fe(t) i 381 i 390 - Rhyolite~ chloriteuse, massive SV~) roche vertp. •

51.8 0.1 2.5 7.8 ! 4,7 7i2 381 9? tPndrQ. felai 1llP_ rhlnrltj,ç,+-ir+.~ uniforme 409,-13- 14010

• veinules de calcite ( 2mm . . ~ • 390 404 Rhyolite chloriteuse pprphyriquP tiAPm/79 (V20) • ( t ~ i

roche dure chloritisé <20$ Î . ' , phorphyre de felspaths <1 mm 20 â 30% contact net 4Q°/A,C. .

. 1 1 I ~ i

. ~ ~ Î • __._____ 404 i 442 Rhvolite chlQritpusP placc77/P (VZF') . , ~ . 1 i 1~ rnrhP sr•icai114a ' ' 408-428: I 2.0 4.9 !5 43 2'. -14-, 7 4f11 1 50. 7 0,-6 0 ~i in n_ 1 41Q 1Qfhe Byer .p 131.c rh1 nrl.t~ 4t G1:' poet. ta•le~YetiX .. . ,. • 431: V4 chloriteuse massive : -! i Î . ! 442 449 442: Rhvolite ch1s r;tPusP Pt r1' aGPPr-t tat,,o,,.. 1 %Cu $Zn % Ni % Pb oz/t 1 ' 0.06 0.22 0.04 0.01 ~0.0~. ~442 '447 ~ : { I (idem 408-428) V ~l~I,i 1~gIIs ; ~ 2 i i ; 1 t r A rni t -I • ~ ` mi nPYA l i cati nn A9 Cu lphuroc 30% py P prl Ar an I . M , I ( I. ~ ` ~ • : ~ 1 j ' , I _..._.._ . . i .-- - -_.. • - ~

N. 5 de 6 DIAMOND DRILL CORE LOG PROPERTY Phelps Dodae #2 79-1 i ---~ ...,-___._--- '= ^S= SAMPLE DESCRIPTION M0. . G, -_ -- - _„ 1 AU OZ AG OZ %CU SiaZV ~ 946N:K~ %PB r~~ ~• : • ~ - _ .~ ., — _

7.9 7.5 6_ 1 ( 44Q 472 449 472 - Phyolite Ch1 nr i tPu.SP (V20) -.15- 14Q,12 4$ _ 3 n F. . 1 ~ 450-45R VL fInr-h ite»cQ (ia ,, • ; 458 V2 chloriteuse massive vPinnlPs ralr,t-c, . i .~ • . • 472 ' 483 Rhyolite chloritisé â 30% (1.1 20). v~inPs C3 5 ralrita ~ , . ~ f 4

; ~ c 1 mm tr py , veux atz <'2% <0_5 mm !•

. . ; + • 483 495 ~ F~7'ol~tP~ fa7?~]p-,t rhlnr i t'içéQ (/72;01 ~ { 2.1 3. 8 ! 9.7 ` 7 _ 5 1472 CQS '; _ roche fracturée <1 mm. f~~$Lres rPmj-,l i a~ ~'una -16- 14013 51.A n d ( i subst3ncA b1 a,,rha j-rPs r3+1rP (rtz eu fe4dPpath) l `` •! i - • ~ , pz/t % Cu % Zn % Ni % Pb I. • j ~03 n n9 0_01 4a4 ' 5.04 495 •I 499 + Dacite ou AndPsitP (v -V 1_ fa;r1e^0nt chl xi~icéc 13908 0.06 0.08 i i 4 b ;! 1 , •o . _I , s 1 .i 1 1 499 , 504 1 Mineralisation p17(5% 1 ~ (except 499-504 chert (Horizon "Marker Tuffite77"1 si0 K~ lia n Ifl CaO 'Fe(t) V2 z l ~• j . -17- 13~307 SR ~ n S 2.0 ! 2.9 9_ R 15.8 495 51 s ~ 500~ devient i1„a riilnr;fr • 1 ; i I Î ~ . i 504 : 530 aciteD ou Andesi tP (74 - v6(x) • I I • • ~

DIAMOND DRILL CORE LOG PROPERTY Phelps Dodge 42 ?-1 '_ __ _'_

- DESCRIPTION NO. • - I : , =_." i Fe(t) `~".. '•^• Sin nta~ •SC9 at()+ _ 2 " .. 3~ ' 549 Diorite . (2D) ~ ~ r . . , Contact assez net 25o/A.C. . ' I ' . ~ 549-551: grains fins I . _ : I .

551 ? 555 ~ Diorite (2D) '

; ~ . I I ~ ' I ; I ~ _ , ~ ~~~ - ~53 ► 561 1 Dac~tQ SohPrul i *i r~tle (va*,pt) -18- 14014 53.1 0.6 2.8 h 5 I R A ►'. 5 .0 555 I I 1 sphérules iusc~u'à 25$ <1 mm I I

~ ~ . ! j . j s 561 570 Dacite (V40) lég~emes~t [~h l nri t i câa mzcs i vQ , ; I 1 : 570 ~ 573 Dacite (V4*91)- g..- ~ '

• i ~ i i I ; 573 ; 592 Andesite (V60) massive chloritisée ~ . . I 0_7 I ~ ti 1 7 1507 '616 _- ' 592 598 Andesite (V6) - roche massive frain}ap gr arl,Anif -i ~ .1 9 13909 61_6 n 1 2.3 ~ 1- i i 598' 679 AnAa ci ta r.hleriticôo (V60) • roche vert-rtoi r Gri Gai i 1 P '

1 lé~èrea:,ent , assez dure l . I i ' 629 653 Diorite (2D) " 0 13910 53.9 Andesite légèrement chloritisée (V6~) - 4-- 1.4 I 8 0.7 ? 4 10 7 'rQ l :653 700 . FIN DU FORAGE 13911 54.2 ' 2.6 I~. 1 0. 4 7~ f~1~ ~~~ -^^;t , _ __.. DIAMOND ®RILL CORE LOG S~ce2 N(% LATITUDE 0400 B. L. PROPERTY Phelps Dodae No. 2 LERART'IP.E 8450 E Tests Magnetic Corrected CLAIM NO. 336148 c1-3- Depth Dip Bearing Bearing ELEVATION S+irf arP 200' -49° HOLE NO. 79-2 o 400' -49 o CORE SIZE AQ BEARING *,45° E 565' -45 STARTED 12 octobre 1979 DIP AT COLLAR -5n° FINISHED 17 octobre 1979 TOTAL DEPTH OF HOLE

FACTAGE ASSAYS CC : DESCRIPTION SAMPLE FROM NO TO AV OZ AG OZ CU ~~ ZN % NI FROM TC _

0 ,, 70 `dort terrain (Tubage laissé dans trou) ci 0 x 0 Ya 0 Mao C40 Fe(t) 2 2 2

70 166 Rhyn1 i ta 00)

Boch gYisP 14g. rlf V4.1,-te. pp" 1.191 nri ti ci 1 391 2 52.6 13.1 0.1 5.6 70 95 4444 __

, massive, grain aphanitiaues. dure 103: trace cp sur 1 po 106: veine de ca)citp <1 rm d'ApAid snh-p ra11d1p 11817 58.4 4 15.3 0.5 5.1 95 119 _ à la carotte

111 â 114 roche légèrement plus tendre, et Plus en 13914 59.8 15.0 0.3 5.6 119 142

plus chloriteuse

140 trace py idiomorphe ds veinules qtz.

13915 51.1 18.6 1.0 5.7 142 167 2=

contact net 65° /A.C.

166 186 Rhyolite (V2) 13916 44.7 0.1 19 4 1.6 5 n 167 ; 186

roche verte. noir _Dar endroit. massive. dP dnrPtP

CONTRACTOR Benoit Drilling LOGGED BY Marc Boisvert DIAMOND DRILL CORE LOG 2 PROPERTY Phelos cQdce -~

SAMPLE i - -^ _-~ =::V ..-_ DESCRIPTION ~0 . l ~-,- `.~ -" 'C Si02 K20 ~ NagO a"a0 c";;9 £P (Y)

assez crar.de.•arains a^haniticuQ fevillPtG c1P rhlnr;ta i i • ~ ! roche plus chloriteuse que precédenunent, répartition

homogéne de la chlorite ! ~ — - j i • _..._ , l 13917 53.5 ---- 12.9 i 1.6 6,6 ` 18ti : ',1 1 1.I.'_ 211 ' =•^.yn l i tA [v ~1 m a cqi •rc (QPri ,•i 1 -a,) • !

; i Passage graduelle, roche légèrement verdâtre, très ' I I ~ I ± - ! dure, fraîche, grains aphanitiques. 1 1 f f ! 4.5 ~ 206 ~ 214 1~~31R 55 5 1 A ~~ 5 _ E ,` 6.1 ; _.._... ff kI ~o ! 214 239 214 Î 220 Contact net /A.C. nykP fP1Ci[I11P 9 13919 77.7 0.4 0.1 5.1 n 3 ; 4 6

1 I • ' Texture plus (~YC1 ac l Qr P , [•r]ntiant rarhnna+a r7o f,,,,,- ►

~ 1 1 _ _ _ • _• ... . ' _ ...... --...... _.._.

I- 220 } 280 ~ ' i Dacite (V4) séricite et plus en plus chloritPux i 4.2 1 3.5 •~ 4.5 1 262 287 ~ 272-277 zone, roche noir. plus f:hlorlf P1lRP, ,p1„G tPYVarP 13922 59.3 1 . 1 4.5 ; I ; ; contact 40o1A.C. 11u Oz g b Caô Z,l % . i . 1 : { 285-288 py dissiminé < 5$ 13920 0.002 0.06 0.09 0,02 1 910t5 2R0 ` , d • I Note: zone mineralisée plus chloriteuse ' ) 1 M

288 300 ~ Dacite (V4) fraiche ~ r. _ ' t ' ~

,;=.3 de 5 DIAMOND DRILL CORE LOG pRopsry Phelps Dodge #2

?,:. 79-2

22=E..1%:-- SAMPLE 07.SCRIPTION NO. . : :::•., —, SiO K 0 : Na2 0- - I MgO CuO 1Fe(t) F.;.Ce.t : -- .. 2 2 . ; . i -. . ' I I: 300 324 - 1 Dacite porphyrique 13923 64.5 0.3 4 A ./ 7 5.1 •4.1 3on 124 . . grains aphanitiques, dure, fraîche, phénocristaux de 1 : . • . felspaths,<20%,< 4 mm. ' I 1 • 1 • .! 1 . 329-344 minéralisation py< 5% • , ; • 1 I 1 1 1 i 324 361 Andesite (V6) légèrement chloriteuse, trace de 119_24 57 5 n 1 1.9 -16_2 r 1 7 -7,.:3 336 361 ' -- 1 , minéralisation, passage à V6 porphyrique, là 2 pi par I 1 • .

• enroitd 342, py I I . I 1 i I 344-347 ny dissiminA 2fl t Au oz Ag oz % Cu ! % Zn I 1 1 A 361 • 376 ; 2cne_ sul-Ingres_ ArA, 4x; 7ns r._...,,, , 4,41a 140 119_21 p ilt).2 Q. 1.2 6 h. 1 I - 1 - 1 1 361 366 ..-..' 1 364 (mag 50% py 40% (cp 10%) sur /pi 1/cloq _ n_i•R _.,0 1-1 IAA ...... _. .,.. 1 371 13926 1) .001 0 1R In çi 1,04 .1 ' 0-el 1 33C i I !37 373 376 436 1 Andesite (VG) légremont 1-111_ 13927 L004 10.30 L,29 In (-) In nn a - I 1, Roche verte. eiva ins whAritleraQ 1:3928 't.003 10.06 L22 I 2 16 . l IPA. 1.-00 - 1 , 420-436 sulohures 30% PV, trace sp, 13929 L005 10.11 L.28 10.14 in ni • . 1 . 1 ! 4 6 ... • 1i (non magnéticue) 13930 131.002 10.17 L.12. 10.14 I 431 3 1 . 1 " É '. .i . 13931 0.003 L.17 !0.11 2.26 ! 2._.?7

DIAMOND DRILL CORE LOG pRor' Phelps dodge 42 •,,,::::.= 7,:•,.79-2

1 SAMPLE OESCR;PT10:s1 1 SiO K20__ . Na20 I MgO I CuO L Fe(t) 1 F7.2%*. 7: I': :•., 7:". 1 2

i ! :, I -1 1 i 445 : 490 436 . 455 • Roche scisaili4 1393.2 0.002 0.17 10 24 • n 1R I . i 1 , 1 4 1' IiI ! : fracments dans use Date friahlp dp Amp r-nmpnii-q,, . :. : • 1 1 I I 1 • ! 1 I 11 455 470 ! Andesite (V6) léaérement cfil. ' 13923 56 9 1.7 !0.9 4.9 d_p r. r, 1 412_ • 4122 I 1 I 1 1 1 ! 460-461_re çc.içai11i=0 ; . 1 I I 1 : 1 .•

470 : 480 , V4 Dorphyricue 139-15 52 5 0.8 3.1 1 1 . '7 6 6 • AUoz AgOZ CU% 1 Zn % 1 i i I porphyre de felspatlis environ de 20-30%,( 2 mm 13934 .002 0.17 0.14 1 0.80 I 1 1 LI 2 1 ; ; I 1 ; i 1 13935 .001 0.17 0.09 10.08 icqn i i 1 ; i I 481 -1 486 Sullphlr-pg ry 913k, rlari ui.,. ro,I.n feaa4„quo SiO 1 x,n TqP n ! M,-,0 ' C610- ' FO(t) 2 1 2 2 ; ; possibilité de sphalérite _.11917 4 7 6 7 , _a ! 4 8 1-4.2 I -,..., ..... i • 1 • I ; I

1 ; . i 1 492 • 500 !1 Andesite (V6) fraiche I • ; , - !

., I , 1 . . 1 1 ,1 530 1 504 1 Dvke. diorite • 1 . .. • . : 1 1 . 1 Roche âr grains arnssip s. frpTe-hp , 1 . i I . hoatonnets plagioclages<1 mm • , 1 . ' i , I 4 1 . i "1 1 i . • i • J

5 Ce..

DIAMOND DRILL CORE LOG PROPERTY Phelps dodge 42 r.:,.79 -2

SAMPLE OESCRtPTtoV NO. SiO 2 K20 a20 IMg0 1CuO Fe(t) i==., •. ~ -~ t 13938 58.6 0.4 7.0 1 525 562 562 d pn 7 oci ta (1,7 Fi) 1 515 (aspect chArtPux?)

veinules de pate blanchâtre, possiblement fejelutirr„P t 1

552 565 ArldQs1tQ OM.) - avPr- 1ijri11Les of c4l61s4.64cc crrtre

les amvadules

565 ! Fin du trou.

ILibre de Responsaliilité Personnelle) C. P. 1270 Matagami, Québec JOY 2A0 ~ ~-i 172 ~~L~;

APPENDIX VI

RAPPORT D'ANALYSE DES ELEMENTS

MAJEURS DU FORAGE 79-1

Phelps Dodge #2

Canton Cavelier

Projet M-130

Min~.stère et des Ressources Gouvernement du Q.Ab3v Documentation Technique 3 MAI 1980 DATE '

No. G.M.: 36071

Par Marc Boisvert, géologue février 1980 PHELPS DODGE #2

D.D.H. 79-1

Introduction

Suite aux résultats géochimiques obtenus pour le forage Phelps dodge 79-2, il serait avantageux de voir, si les caractéristiques géochimiques ressorties du forage 79-2 sont également présentes pour le forage 79-1.

Localisation et accès

Le forage Phelps dodge 79-1 est situé sur le claim no. 336148 c1-3- dans le rang VII du canton Cavelier de la région Matagami, Québec.

L'accès est possible par la rivière Allard en partant du pont New Hosco ou par hélicoptère.

Etude des résultats

SiO % poids Vs longueur du forage fig. (1) 2 Le pourcentage poids de Si02, 72 â 472 pieds, soit les échan- tillons 1 â 15 indique une rhyolite qui devient graduellement une roche de faible teneur en silice, passage de 79% â 30%. De 472 â 716 on a une andesite dont la teneur est plus constante.

L'examen de la carotte montre bien une rhyolite en début de forage qui devient graduellement une roche de plus en plus chloriteuse. A la fin du forage la roche apparait comme une andesite fraîche.

Na20 % poids Vs longueur du forage (fig. 2)

Les échantillons 5 à 12 montrent un lessivage presque total pour le Na O. Les échantillons 17 à 21 donnent des valeurs normales de 2 Na20 pour une andésite, et 2 et 3 pour une rhyolite.

...2 ...2

Mg0 % poids Vs longueur du forage (fig. 3)

Les échantillons 9 â 15 montrent un enrichissement en MgO, cette zone est associée aux roches décrites comme étants riche en chlorite.

SiO Fe0(t) - Mg0 * (fig. 4) 2 - Le passage de la zone A â la zone D des échantillons 1 â 16 montre bien la diminution graduelle en silice. Les échantillons 9 â 15 â l'exception de l'échantillon 12 sont situés dans la zone C, zone des roches lessivées en sodium et potassium. Les échantillons 17 â 21 sont des dacites et andésites qui n'ont pas les caractéristiques d'altération des rhyolites.

Graphique AFM fig. 5

Les roches sont tholeiitiques â l'exception du dyke porphyrique.

Conclusion

Cette étude de la géochimie des roches apporte trois observations importantes.

1. Les résultats géochimiques délimitent une zone d'altération, zone où il y a lessivage en Si02 et Na20 et enrichissement en MgO.

2. La présence d'une rhyolite altérée, rhyolite pauvre en silice associée â la zone d'altération. Cette idée vient de l'absence de contact visible a l'oeil et de la diminution graduelle de la teneur en silice.

3. Tous les échantillons sont tholéiitiques contrairement au forage 79-2 qui possède des échantillons tholéiitiques et calco-alcalin.

* D'après R.G. Roberts et E. Reardon, Journal Canadien des Sciences de la Terre, Volume 15, numéro 1, janvier 1978. SiO K20 Na20 Mg0 Ca0 Fe(t) De A # Echantillons 2

1 13903 79.6 0.5 0.1 3.4 0.2 4.0 . 72 142

2 14001 65.1 0.2 1.1 6.5 3.2 7.6 142 152

3 14002 61.6 0.1 2.7 2.8 3.9 4.2 152 161

4 14003 60.7 0.2 3.4 3.3 5.5 4.5 168 178

5 13904 55.9 0.1 0.1 3.0 0.2 4.6 210 236

6 14004 75.4 0.1 0.2 4.7 0.4 4.3 236 261

7 13905 75.5 0.2 2.2 3.1 7.1 6.8 278 292

8 14005 71.3 0.6 0.8 4.4 1.6 4.4 292 309

9 14006 50.8 0.6 0.1 10.8 0.1 7.3 309 328

10 14007 53.6 1.9 0.2 8.4 0.1 6.7 331 344

11 14008 51.7 1.0 0.1 9.7 1.9 6.7 334 377

12 14009 29.5 0.1 0.1 16.2 1.5 10.6 377 38;

13 14010 51.8 0.1 2.5 7.8 4.7 7.2 381 39C(

14 14011 50.7 0.6 0.9 10.0 2.0 4.9 410 435

15 14012 48.3 0.6 2.8 7.9 7.5 6.1 449 47;. 16 14013 51.4 0.4 2.1 3.8 9.7 7.5 472 49E

17 13907 58.2 0.5 2.0 2.9 9.8 5.8 495 51C,‘

18 14014 53.1 0.6 2.8 6.5 8.5 5.0 555 58C

19 13909 61.6 0.1 2.3 0.7 3.6 7.2 592 61E

20 13910 53.9 1.4 6.8 0.7 2.4 10.7 666 69]

21 13911 54.2 2.6 7.1 0.4 2.3 8.0 692 70Q

* 499 â 504 pieds.non analysé % poids Si°2

Phelps dodge group 7^ DOH 79-1

Fig. 1

6

, 60

55

45

AO

600 700 800 P`.eds de~or-zt ~ M % poids

Phelps dodge group 42

DDH 79-1

Fig. 2

,Cts,'/+,S,c /o,,r) 70 4

3

1

100 200 300 400 500 600 700 800 900 nieds az forage % poids Phelps dodge group #2 Mg0 nMH 79-1

Fig. .3

20

15

10

3 2

100 200 300 400 500 600 700 800 Pieds de `orage C TRIANGULAR CO-ORDINATE Si02 Q Q KaE KEUFFEL & ESSER CO. M+DE n+ USA. 46 4490

~ ♦d er ♦ ♦.♦7P ♦ ArATAIM pp~~Lw es! Phelps Dodge group #2 VJi]~ ti ♦ ► ♦~I~♦ ~~I Fig. 4 .~~. ~~ „ ~ DDH 79-1 ♦..8~~♦~•~ :~ W I~~ ♦..•. ♦ ♦~l~ U9.♦.♦vr► p•0000 Al► int ► ♦V ~AV~~~~ ♦. ~p♦.p♦ ~ ~~ ♦, „4. ♦~~

Roche non altérée A. A Roche lessivée en Sodium vinfitfr ID) Roche riche en chlorite: Lessivée en silice Ttit Talc-actinote A1203 complètement disparu s -}F -71;,) . . r. Y 7 L

1 . ~

d

6

• i \.. ti, f'r ~j AST • '

.•. . . ~ - MAO ,._. ;. . , . ~-.-. <. y _ . . • / • AWAY& AIT ,...,;

Mg0 fe0(t) arATWAINTATAY Af VAVATIT c FE?0(t) TRIANGULAR CO-ORDINATE W~ KEUFFEL & ESSER CO. MADE I. USA + 46 4490

Fig. 5

Phelps dodge #2 DDH 79-1 ♦~ airifAivirAv® .winn1♦wITe ~' . . , ♦~♦ ~►w~ll®.w ~ i~.~1~ Wail/ Irviile .& 'Baragar 1971 . ♦ AiréraLion modérée Kuno 1954 AVAV %WA MI& Affik

.~ ; < ~ • Andesites /;é non-altérées •

5- `•~1.~ • ~ ~':'•' ~ ' A.-. \~ h \; ~ J wer V..;'•r 3 /7 •.`. • /=-ti:f \ '-•~~ '~ ~/ '.. arQ ... ~ ~~. j ti if ~ • . .. Très fortement Porphires Acides - f..y.\ `% . altérée (dykes?) , ï;.r t ';': ` t~. . , i AA AVAVAVA Y r , V AVAY:vAVMA ~~~.;~~; ~ AvAvv;~► rAmsres ~~-.~~ TVAVAVAVAAorA.„ AwAvapr r _ ♦, ♦ ♦ ♦ ♦ ♦ ♦ ♦ ~r.~~ w ~vo.•r o w♦ ~ P♦.♦ !♦ I♦•._...a♦• t K?0 ~~/ ..~•~ ~ ~;a r~ ~ ~AYA t %~~ , , VAIWIY~~~~~ .~ ~~n , ~~- ~-~pX~ ~~ _ ~~ VA ~,,,'.IIV uUVI ra rNii,1dl Ria L.)m)tee (Libre

•

Rapport d'analyse des éléments majeurs du forage 79-2

Phelps Dodge #2

Canton Cavelier

Projet M-130

Par Marc Boisvert, géologue Le 30 novembre 1979

Ministère de l'Énergie et des Ressources Gouvernement du Québec Documentation Technique 2 1 MAI MO

No. G.M.: 360'71 Phelps Dodge #2

D.D.H. 79-2

Introduction

Des travaux antérieurs laissent supposer qu'il y a contact entre les roches volcaniques du groupe Wabassee et du groupe Watson Lake. A l'aide de l'analyse des éléments majeurs nous voulons vérifier s'il y a une différence entre les deux groupes du point vue géochimique, ce qui pourrait aider â reconnaître ce contact dans le futur.

Localisation et accès

Le forage Phelps Dodge 79-2 est situé sur le claim numéro 336148 c1-3- dans le rang VII du canton Cavelier de la région Matagami, Québec..

L'accès est possible par la rivière Allard en partant du pont New Hosco ou par hélicoptère.

Etude des résultats

SiO %poids Vs longueur du forage (fig.l) 2 Le pourcentage poids de Si02 indique qu'on a généralement une roche de composition andésitique, à l'exception de l'échantillon 13919 qui donne un pourcentage de 78%. L'examen des carottes montre que cette échantillon provient d'un dyke felsique.

Na 0% poids Vs longueur du forage (fig.2) 2 De 70 pieds à 206 pieds on a un lessivage complet du Na 0, soit les échantillons 13912 à 13917 inclus. De 206 â 565 pieds la roche n'a pas été lessivé en sodium.

...2 ...2

Mg0 % poids Vs longueur du forage (fig. 3)

De.70 pieds â 206 pieds la roche est riche en MgO, soit les échantillons 13912 à 13917 inclus.

Ca0 % poids Vs longueur du forage (fig. 4)

Le Ca0 se comporte de la même façon que le Na20.

Graphique A-F-M (fig. 5)

Les échantillons 13912 à 13917 inclus se retrouvent en bordure de la limite Fe0(t) - Mg0 soit dans la zone tholéiitique, tous les autres sont dans la zone calc-alkaline.

SiO - Feo(t) - Mg0 (fig. 6) * 2 Les échantillons 13912 à 13917 sont situés dans la zone C zone oû il y a lessivage complét du sodium et du potassium. L'échantillon 13916 fait exception pour se situer dans la zone D, zone riche en chlorite. Les échantillons 13918, 19, 22, 23, 24, 33, 36, 37 et 38 sont des dacites et andésites fraîches situées dans la zone A-B, zone correspondant â des roches plus fraîches. L'examen des échantillons montre que les roches du début de forage sont plus altérées que celles de la fin du forage. Pour l'échantillon 13916 on observe des feuillets de chlorite.

Conclusion

Les études géologiques antérieurs laissent supposer la présence des roches volcaniques du groupe Wabassee et du groupe Watson Lake, travaux effectués par Phelps Dodge et Orchan.

* D'après R.G. Roberts et E. Reardon, Journal Canadien des Sciences de la Terre, Volume 15, numéro 1, janvier 1978.

...3 ...3

Les résultats géochimiques montrent un changement net à la profondeur de 206 pieds. Changement que l'on peut observer pour le Na20, MgO, CaO, A-F-M et sur le graphe SiO - FeO(t) - Mg0. Soit un lessivage en Na 20 et CaO, un 2 enrichissement en Mg0, une distinction précise entre une suite tholeiitique et une suite calc-alkaline et une diff- erence au niveau du stage d'altération. Dans le cas présent on pourrait associer ce changement au passage du groupe Watson au groupe Wabassee. Il est â noter que cette étude montre seulement qu'il y a une différence géochimique entre les deux groupes pour ce forage.

Par le fait même il est recommendé de poursuivre les analyses géochimiques partout où il y a possibilité d'un contact entre les deux groupes, afin de déterminer des caractéristiques possibles â chacun des deux groupes.

1/1 Marc BoiS'vert, Géologue EXPLORATIONS NORANDA LIMITEE

(1.324) Echantillon SiO Mg0 Fe(t) Na20 Ca0 Na20+K20 Fe0(t) 2 Distance

13912 59.6 13.1 5.6 ------0.1 --- 7.4 70 95 13 58.4 15.3 5.1 ------0.5 --- 6.7 95 119 14 59.8 15.0 5.6 ------0.3 --- 7.4 119 142 15 51.1 18.6 5.7 ------1.0 --- 7.5 142 167 16 44.7 19.4 5.0 0.1 --- 1.6 0.1 6.6 167 186 17. 53.5 12.9 6.6 ------1.6 --- 8.7 186 206 r- C lD O O 1 55.5 5.6 4.5 2.7 1.9 6.1 4.6 206 214 '-i '- C ~D - i N 77.7 5.1 4.6 0.1 0.4 0.3 0.5 214 239 N N ri [~ 59.3 4.2 5.4 4.5 1.1 3.5 5.6 V 262 287 N ~C

64.5 2.7 4.1 4.6 0.3 5.1 4.9 1 61 300 324 N 57.6 6.2 7.3 1.9 0.3 3.7 2.2 h 336 361 M M h 0 J •

56.9 4.9 6.6 0.9 1.7 4.8 2.6 412 422 M n r

62.5 3.7 2.8 3.1 0.8 6.6 3.9 ) u 470 480 h CO M O 1

54.7 4.8 3.8 2.6 0.7 9.2 3.3 O 505 525 V' 1

58.6 4.1 3.7 3.4 0.4 7.0 3.8 525 562

Repartition AFM Si0 -Fe0-Mg0 Z Fe0 M Na_0tK Sides Fe0 Mao r- i

L s)

42 36 64 -- 12 74 9.2 1 r1 cr i 13 30 69 --- 13 73 8 ri c o

14 33 67 --- 14 73 9 N V'

15 29 71 --- 15 66 10 r- O {

16 25 74 0.4 16 63 27 N ri 01 17 40 60 --- 17 71 17 1 I LC M V ) V 18 37 28 18 83 8 h

19 52 4.3 19 87 6 r-I M O h 22 25 42 22 84 6 N rI V 23 41 38 23 89 4 M r-1 V O

24 54 12 24 78 8 M r! N

33 54 16 33 81 7 U' M M

36 33 34 36 89 5 ) O 37 38 M 25 37 85 7 M N h

38 38 30 38 87 6 % poids Phelps Dodge # DDH 70-2 6i0 • ) 2

FIG. 1

76

70

60

WWI

Co

••••••••=MI.1 1.,

55

60

000 700 - Pieds de fare 100 2°0 3(in 400 500 .. P}.['.ij:ïS ~F T}r1fl

FIG.

i

4

3

._ .. _ _ 40Q Q00 $00, er32 de fbra7e

Phelps Dodp,e i2 DD" .79-2

FIG. 3

30

20_

••••••••

••••••••••

C)

1

100 200 3(i0 500 • . forge• %poids Phelps Dodg, 2 DDH 79-

CaO

FIG. 4

19

8

2

~! ! 1CD 200 300 400 500 600 700 800 Pieds de foraÿ TRIANGULAR CO-ORDINATE C FeO(t) ~ 11+ KEUFFEL & ESSER CO. MADE ih USA 46 4490 ~

ti

.' . ~\\ ~W. • Fig. 5 . ~~~~Î♦.~ Al.~.♦.♦ ♦ Phelps Dodge #2 . .U~~ p9~. DDH 79-2 ~~~,~~~I ~~~. .♦ i~er®mr.► A'W♦♦ ♦, ~~.~-~4 ~~ 1?IVA~ ,~~ ~~~. ~. ~~ ~ \ J~~ ~~~~ ♦~♦ ~ ~ .' Ô. ~,~ ~~. AVI ~~♦ ~~ ~-f ` = •IA Irvine Baragar 1971 ~;~~ ~ AVAITATT ,••' . ITASTO r ' yNAVA VA♦ -~ ~ _ ' . . ~ a Allt 'MAW ,_.~._. - ~ *lark -4._ t ~ , A t a ♦ ~ ~. G~ , ~ ~ ~AO r- , ~~si • ~ ~~.~♦ ~~ _ ~ Atit,Ti -~ , •~3t.,ti ~~ ; . - AA. !> -,-,.--C _~-;., ~ = ~ z~r~_ - ~,~V r ♦ ~~ A~~~/ ~~ ~' ;w_ ~~~ ~~~~w~~~~► « _~~~-~~';' - /y ,. 3 , ~ ~~j ~ ô ',STAN AAW*e~-~- -730

liF VAV ~f ♦ ♦ Air+A ~~~_ ► 2f1 `o~~ Î ~'., T , ~ y ~ + * ~ MMAVr :... H .. ..: . . ~20 . .

A L ~15 AA ~ \AA AVOA" .. I~• WAVAVAVA ~~T. ♦f'r A • ia♦► A~ ~.♦ ~w► ✓ V ; -•-`~', „~, r ~'~ -\A \ ~~/w'•./ ' viol"'-~r el C It~iy~ TRIANGULAR CO-ORDINATE f~ KEUFFEL & ESSER CO. MADE IN USA 0 0 ~► 46 4490

~ ~ AA AVItiVAVA AVAMgr AVAV0AV P AVAn ~a •-~~aA Phelps Dodge #2 AVAPAv vA ~~~A ~ Fig. 6 DDH 79-2 :110 t~ . ~ ~ IC ~ ~ .~ ~~~ • ~~k. .~.~►.~► ~ ..~►o~~.fw~M~~w ~~1►~iMd~U~ II AV A~w ~~~ ~~i~~~iii~ ii~ ~ . ~ a~ ►~®w ► . ~a • • • A) Roche non alterée _ ~ ,~ ______VV 1/A A -B) Roche lessivée en Sodium irA ~ITAVAIYA C-D)Roche riche en chlorite: Lessivée en ~ ~ _ Silice /,r E) Talc-actinote. A1203 ii r. ~~j ' , ; a complètement disparu

sf

AV::.:. A

• .'1 .!.. . . .{: . :r . .~. \' . / y~. •\ .. . . . a /~. . . \-.~ • ` . _.. `,~ . ~\ .` •'t ` . '~. 10 • !~. . . ~y / . . . \ /. . . ~ ~ . A .. . . . . % AA:• `\ •+ ~ ;~ ✓_ a2:;+K20 \/ VT,ïv -'~: ` ✓~ V ~ Erg0 C APPENDIX VII

PHELPS DODGE CORPORATION OF CANADA, LIMITED.

GEOLOGICAL RECONNAISSANCE OF THE SAMSON RIVER AREA PROJECT #121

Ministère d^ ra'c"r;e ct.des Ressources Gouvérnemcnt'du Documentation Technique

DATE: 9 1 MAI 198D , No. G.M.: 36071

P. J. CLA "E — AUGUST 22, 1973

• INDEX

Introduction Page 1 Geology Page 1 Structure Page 3 "G" Grid Page 4 Photographs .Page 6 & 7 Regional Mapping Page 8 Rock Types Page 9 Photographs Page 12 & 13 Rock Descriptions Page 14 Structure Page 15 New Claims Page 17 Conclusions & Recommendations Page. 18

x

APPENDIX I Page (i) to (v) Notes on other companies' drill core examined during the geological recce. of ,Project #121 area.

APPENDIX II Page (vi) to (viii) . Photographs..

APPENDIX III In Pocket Maps.

x

ABSTRACT

The geology of the "G" sulfide zone in La Gauchetiere Township is described and the geological setting of these ,sulfides is compared with other deposits in the Matagami area. At "G" massive pyritic sulfides containing signi- ficant quantities of zinc, copper and silver occur at the contact between altered Watson Lake type acid volcanics and massive hard Wabassee type dacite. Dacitic feldspar porphyry and diorite or dioritic greenstone above the massive dacite are correlated with the "pea agglomerate" and phases of the Bell River intrusive of the Matagami camp. The geology of "G" grid mirrors the setting for Matagami. sulfides so closely that there is little doubt that.it marks the re-emergence of the Watson Lake group which. plunged below the erosion surface near New Hosco Mines.

Reconnaissance outcrop and drill core data from the area around the Company's large Samson River property is inter- preted together with geophysical and topographic trends in an attempt to predict the location of the mineral- bearing Watson Lake - Wabassee contact below the heavy clay cover. It is suggested that the Watson Lake volcanics may have been raised to surface on a NNW-trending fault . so that their upper contact would lie inside the main V-shaped magnetic trend covered by the Phelps Dodge staking. This interpretation will be tested by drilling of our . A.E.M. anomalies.

amp 'e - - X INTZODüCTIOti In late March, 1973, 'drill hole 121-12 testing airborne con- ductor "G" cut a significant intersection of base metal- bearing sûlfides about 15 miles west of New Hosco Mines. Over 900 claims were staked by Phelps Dodge to protect the inferred trend of the mineralization, and a Questor A.E.M. survey was flown over these claims. The present report summarizes geological information gained in the subsequent drilling of "G" conductor and geological reconnaissance of the survey area. The drill program was carried out between May 15 and June 25, and the geological recce. between July 5 and August 2. Helicopters were used for camp support and field transportation for the geological recce. and contract ground surveys of the A.E.M. anomalies. By the end of the preliminary drill program 16 drill holes totalling 9,412 feet had outlined a body of massive sulfide up to 50 feet wide, about 400 feet long near surface, and extending to at least 900 feet below surface. Stringer sulfides underlie the massive zone and narrow satellite lenses occur in shears beside it. Rock types seen in the core can be recognized at New Hosco and Mattagami Lake Mines and match descriptions given in QDNR Geol. Rept. 137 on the Matagami Area. In fact the geology seen in Grid "G" is so close to the typical Matagami Camp pattern there can be little doubt that this zone marks the reappearance of the mineralized Watson Lake - Wabassee contact which had plunged below the present erosion surface near New Hosco Mines. Because the drilled zone is better known than the surrounding area, the report will begin there and work-out into the surrounding country. Efforts to trace the Watson Lake - Wabassee contact away from Grid "G" are hindered by a lack of outcrop and suspected structural complexity. Information from the next phase of A.E.M. follow-up drilling aided by more detailed work on key outcrops, could help to define this critical contact.

GEOLOGY "G" Zone The "G" sulfide zone is a body of pyritic' sulfide with asso- ciated magnetite, chalcopyrite, and sphalerite, lying above strongly chloritized fragmental volcanic rocks, and below a discontinuous cherty layer under a sequence of hard dacite, •dacitic (or dioritic) feldspar porphyry, dioritic greenstone and massive diorite. These rock units can be correlated with

'w ~

the Watson Lake, Wabassee, and 3011 River complex rocks near Matagami. she-relation between these units is illustrated by Section 2E and the -250' plan of drilling. Rock Descriptions The diorite.and dioritic greenstone are massive medium grained and fine grained igneous rocks composed of about 55% altered feldspars, 10% quartz and 30% green amphibole and traces of chalcopyrite. They appear to be comagmatic and differ .mainly in grain size and in the occurrence of considerable epidote plus quartz carbonate stringers and siliceous-epidote flow breccia in the greenstone phase. Similar rocks in the core at New Hosco Mines are described as part of the Bell River Complex. An unusual clotty feldspar porphyry occurs between the dioritic rocks and underlying hard volcanics. Its matrix resembles the associated dacitic tuff (?) and the top (N side) of the porphyry bands are commonly gradational through an increase- in size and proportion of the feldspar clots. The gradation begins with a few feldspar spots occurring in a grey dacitic matrix, but at the centre of a typical band the clots reach 1/2" to 3/4" in size and form up to 60% of the porphyry. These are accompanied by granophyric clots and 1/8" clots of black chlorite similar to the soapy footwall chlorite. Ex- tremely epidotized feldspars mark the base of the porphyry bands. The same rock was recognized in drill core at New Hosco Mines, where it is known as "pea agglomerate" or "lapilli- tuff", and closely resembles the "polka dot gabbro" of Mattagami Lake Mines (M. Latulippe collection). Although the rock is distinctive, it has not been seen elsewhere in the area. Its association with these two ore bodies, as well as the "G" sulfide zone, and the occurrence of footwall type chlorite clots in the porphyry at "G" suggests a close re- lationship between the porphyry and the ore forming process. Its mode of origin is not clear, for even thqugh the contacts look gradational with the tuffs, they seem to cross-cut the volcanic formations in the deeper, western part of the zone, although faulting can be expected here. Perhaps the unit includes both intrusive and extrusive phases of the same por- phyritic magma. The dacitic feldspar porphyry is interlayered with finer grained massive dacite and is underlain by 50' - 100' of mixed fragmental volcanic rocks. This unit is commonly represented by very hard dark grey Wabassee Type dacite (or rhyodacite) tuff but also includes layers of tuff breccia and schistose chloritic andesite. A thin cherty layer con- ,taining pyrite lenticles and lamellae occurs• within the dacite tuff a few tens of feet above the massive sulfides. This dierty tuff is thinner but analogous to the KT horizon of the Matagami Camp. The interval'between the sulfide and the cherty layer is filled with either medium grained massive d,0„0..:

dacitic tuff or by a few feet of chloritic schist. The sulfides form a 50 foot thick lense of generally fine grained massive pyrite containing very fine disseminations of sphalerite and c;.alcopyrite throughout, with better sphalerite concentrations' near the top (N side) of the lense and better chalcopyrite cut at depth on - lines lE and V 2E. Magnetite is scattered through the sulfide and con- centrated (near the bottom of the zone) on lines 0 and 2W, and a nodular pyrite-chlorite schist commonly marks the base of the sulfide. A band of massive "carbonated dacite" occurs near the centre of the massive sulfide lens, and pyrite-chalcopyrite stringers occur through a soapy chlorite schist for several tens of feet below the massive sulfides. Barren chloritized volcanic rocks extend to the limit of the drilling. This chloritic alteration zone also incorporates a unit of very uniform "massive carbonated dacite" which resembles a carbonated tuff but is too uniform to be a true volcanic rock and is believed to be the result of. complete replacement by carbonate-chlorite during the development of the chlorite schist. Remnants of fragmental volcanic rocks can be seen in some of the soapy chlorite, and short sections of silicified acid lapillistone were cut at the bottom of some holes. Similar silicified Watson Lake type rhyodacite is exposed about 3/4 miles SW of the "G" zone. The geological setting of the "G" sulfides repeats the setting of the New Tosco and other Matagami camp deposits, and demonstrates the reappearance of the Watson Lake volcanics which were last recognized some 15 miles to the east. Careful work is warranted in tracing the prolific Watson Lake - Wabassee contact through the overburden in the area around grid ".G".

STRUCTURE The structure of the "G" zone is illustrated by Section 2E of the Geological Plan at -250', and the contours of the main sulfide zone. In general the sulfides form an elongated lens striking parallel to the base line (110'Az), dipping about 65.N, and plunging almost straight down the dip. Small folds in the core suggest that the plunge shown by Section 2E appears .to be simpler than nature and represents an average . between steep easterly plunges and more shallow NW plunging. ,i . . cross-folds.. ,..~eT, east end off ,.n..t• lens swings from about ~~0 to about 90' in strike below 500' 'depth, with the hinge of this swing at about 2E on the grid. At 1W the feldspar por- phyry and Wabassee rhyodacite trend in a NW direction. This change in strike is most apparent on the 500' plan (which is not reproduced here) and corresponds to a general NW•trend shown by the magnetics. Therefore, although the early drilling has shown the "G" zone as a uniform appearing lens, both ends of the drilled area contain swings in the structure to suggest that the lens may be structurally more complex than it appears. Longitudinal (ESE) faults can be traced agross the drilled ât@â: Ord of thdsê lie§ hêâr the tbp of thê hazel Wd'beL eè dacite layer above the main sulfide lens and is responsible for localizing narrow lenses of base metal sulfides., Similar shearing occurs in the chloritic footwall and again carries discontinuous sulfide lenses. The sulfide-bearing shears are most apparent on Section 2W where the main sulfide lens was not found. Slickensides in the core are unreliable but would suggest a probable right-hand movement with a plunge of 50' - 70'E. It is possible that the differing trends of feldspar porphyry and Wabassee rhyodacite in the western part of the grid, and their absence in the east is due to their being cut off on an ESE striking fault through the extremely altered section of the porphyry. Faulting may also have. caused the rapid termination of the sulfide lens, although no strong shear was noted at the ends of the zone. .Continued ,drilling - may supply answers to these alternatives.

"G" GRID Watson Lake and Wabassee type volcanics are exposed within •1/2 and 1 mile of the "G" sulfide zone. The best examples of Watson Lake type volcanics were found 200' to 800' beyond the south end of L-16W, where they form white weathering out- •crops of spherulitic altered rhyodacite containing inclusions of fine grained rusty weathering chloritic schist. Although strong northeasterly schistosity cuts the inclusions they are commonly elongated in a northwesterly direction. The most altered rhyodacite is composed of a mass of 1 m.m. quartz 'spherulites rimmed with softer creamy "feldspar", held in a mat of interstitial chlorite and cut by fine. stringers of quartz. Intensely altered samples develop an almost piso- litic or"bauxitic" texture on the weathered surface. In less altered varieties, a green chloritic matrix contains clots of quartz and feldspar and some fine quartz eyes, with minor. amounts of pyrite and chalcopyrite in the outcrops south of the grid. As. field terms, andesite (1), dacite (2) and rhyodacite (3) were used to distinguish between (1) brown weathering and (2) buff weathering dark green volcanic rocks and (3) lighter apparently acid volcanics, so that the "andesite" and "dacite" will.containsome dark chloritized acid volcanics identifiable'. by their quartz eyes. Quartz eye rocks of 'this type crop out between 24W and 52W south of 12S. Two m.m. spheruïites of quartz around chlorite and pyrite cores have formed in the Watson Lake type volcanics on line 52W.. A band of distinct white weathering "mud flow tuff" crops out near them at 12S-52W. This tuff contains angular plates of cherty (?) rhyodacitic ash in a dark green tuffaceous dacite matrix. It must indicate an interval of volcano-sedimentary deposition that could mark the Watson Lake - Wabassee inter- face. Dioritic greenstone to the north of•this tuff, and chloritized lava to the south of it, repeat the pattern of the "G" sulfide zone and support the need for a drill hole into the lower resistivity zone located by the I.P. survey under 52W-11S. Wabassee type dacitic pillow lavas crop out between 600' and 1000' north of grid lines 8E and 28E. These lavas are typically compact grey-green dacites with small (l' - 2') roundish' pillows. Feldspar clots or amygdales occur in some bands. Flow contacts and some pillows trend ENE, but the pillows are .generally too symmetrical to allow reliable top determinations.

The.eastern outcrops contain a body of fine grained/medium •grained, massive green-grey, brown-weathering, rhyodacite striking SSE across the inferred trend of the pillow lavas. This rock is thought to be a satellite dyke intruded into the pillows at the time of volcanism. R::,CIONisL MAnP .\ G

General Regional mapping is hindered by the thick clay layer which blankets most of the area, restricting exposure to hills of resistant rocks which poke through it, or to drill core from previous exploration efforts. Where 'bedrock cannot be seen, regional interpretation is based on trends shown by the air- borne geophysical survey, and topographic features visible through the flat clays. Watson Lake type volcanics have not been recognized away from "G" grid because these generally altered rocks do not form prominent exposures and because previous drilling appears to have been in the wrong places (with the exception of a possible occurrence of Watson Lake volcanics found in H-5 near the Allard River). It is also possible that Watson Lake type rocks form discontinuous piles concentrated near volcanic vents and that rocks deposited at the same time away from the vents would be fresher and more tuffaceous or even basic in composition. If so, the Watson Lake - Wabassee type contact would be restricted to the more altered and mineralized' vent areas and the time-line on which this contact lies could run through a Wabassee type sequence. Regional Correlation An interpretation of the regional geology (Fig.#rl), shows the relation between the Samson River and Matagami areas. At Matagami, the Watson Lake and Wabassee rocks have been folded around a west-plunging anticline into which the Bell River gabbroic complex has intruded. Tops are generally outward from the nose. A second volcanic interface, higher in the Wabassee series, carries small sulfide zones on the Daniel Mining property. Higher still, sediments appear in quantity in the sequence. These sediment bands are shown to run through Matagami Lake and the southeast corner of Galinee Twp., and to strike generally westward into our work area. The northern sediment-bearing band would appear to connect with our northern series of'magnetic and E.M. anomalies covered by grids 1,2,3, etc. Questor's aeromagnetic map shows this unit running in a general WSW direction from the old D'Aragon Mines property (Grid 1) to a point between the Subercase River and Rat Lake where it swings west as far as the Samson River. If this is correct, the Mt.Ste.Helener~.s.~..~. acidvolcanicsi~.lie to the 2^Onorthof ~ the main sediment-bearing band. Noranda and St. Mary's Explora- tions' core from the band south of the Ste. Helene hills show carbonated schistoe.rhyodacite (or tuff) interlayered with graphitic pyrite schist and some greywacke. The regularity of the magnetic trend suggests a normal sequence which should top to the north, although some of our few determinations show tops south. The southern metasediment band is shown beginning to the south of the Watson Lake - Wabassee contact near the south end of Galinee Twp. and is projected WNW from there through central Cavelier Twp. and the northern parts of Desmazures and Aloigny Twps., possibly to join the northern band near the west edge of Ste. Helene Twp. Linear' conductors along the south boundary of our Questor survey strip are probably asso- ciated'with this sedimentary material, while the shorter con- ductors lying between grids 22 and 15 are•more likely to lie in an older volcanic assemblage. Some of the bedrock in this part of the area is available in core drilled by Alcourt, Chirac) and Allard River (Provinces X), which is detailed in the Appendix. Chimo's targets appear to be graphitic pyrite-bearing slate, or tuff bands, or magnetic anomalies in basic volcanics or gabbro. Alcourt's holes test magnetic zones (magnetite or pyrrhotite) in basic volcanic rocks. Some acid Wabassee type (?) and intermediate volcanics occur in both groups of core but the rocks are predominantly basic volcanic, gabbroic, or metasedimentary. The Allard. River drilling cuts a mixed acid and basic volcanic assemblage including (in DDH-5) some spherulitic chloritized rhyodacite similar to the material in the footwall of the "G" zone. The possibility of Watson Lake type volcanics in this area will be tested by our drilling of conductors 16 o.,22. Thus the two sediment-bearing bands appear to form a frame inside of which are found older Wabassee type volcanics, an inlier of Watson Lake and the "G" massive sulfide deposit. The structural details within this frame seem more complex than the above simplified picture suggests. Certainly the Watson Lake rocks could not reappear at surface without either a reversal in plunge caused by cross folding or possibly by movement on a fault. Details on the structure of this central section are given in a later part Of this report.

ROCK TYPES With most of the area covered by glacial clay, rock exposures are concentrated in two main groups of hills - the Ste. Helene Hills, and the Macivor Hills with which are included the iso- lated hills east of Grid "G" and the exposures south of Maclvor Lake. The Ste. Helene Hills

The Ste. Helene Hills which straddle Ruisseau de la Chute between Lac au Rat and the Subercase River, are underlain by hard rhyolite and rhyolite-breccia, interlayered with dacitic tuff and pillow lavas with siltstone, greywacke and cherty beds exposed near the falls and accompanying graphitic conductors in Noranda's KJ series holes to the south. Brittle fracturing rhyolite breccia crops out near th9 north Qncl of our rhyol tes ire Ç;Axker and fresher appeainçl than typical Watson Lake type rhi lites, and the common alteration appears to be silicic rather than chloritic. About 1000' south of the falls extreme mylonitic brecciation • caused by vertical N30.E movement has developed a rhyolite breccia abutting against a band of cherty tuff. Virtually undisturbed fine bedded siltstone a few tens of. feet away indicates tops to the southwest as do nearby pillows on,the government map. The rhyolite breccia is interpreted as a .blowout feature in an area of active volcanism.

Extremely silicified spherulitic and variolitic rhyolite is cut by Noranda's drill hole MS-G, in which dark spherulitic lavas are mixed with brecciated sinter deposits. Variolites up to 3/4" across resemble J.I.Sharpe's illustration (IIa p15) from near New Hosco Mines and the spherulitic lava matches his description of the unit above the massive Wabassee dacite at New Hosco (p 56). Thus the rocks in MS-6 closely resemble the Wabassee rocks near the Orchan and New Hosco Mines. Although A.E.M. conductor 028, 1/2 mile west of MS-6, does not give a gold response to either EM-17 or. VLEM surveys, care should b9 exercised before abandoning the A.E.N. indi- cation. The mixed rhyolite and pillow lava assemblage swings from E to NE at Ruisseau de la Chute to follow a straight N60- E trend through the rhyodacite breccia outcrop at Lac LaGauchetiere. Coarse gabbro intrudes the volcanic rocks in the hills north of the falls. The gabbro is quite fresh looking intrusive, which contains acid volcanic inclusions and narrow magnetite stringers. Magnetite accompanying this gabbro is apparent on the aeromagnetic map and formed most of the targets for Noranda's "Erivan" drilling. Maclvor Hills ''r- The rocks in the. hills about 2 miles east of Grid "G" range from andesitic flows and pillow lavas in the south to hard massive dacite and trachyte flows and dykes further north. The trachyte contains^s 1 ".m. laths of green plagioclase feld- spar in hard very fine green-grey or pink-grey matrix. Feld- spar spots and amyrdules are common in the dacite. Light grey coarse feldspar porphyry cuts the volcanics in the north side of the area. These rocks carry about 70% feldspar and .quartz crystals and minor hornblende plus intergranular chlorite. Some of this porphyry is definitely intrusive but some might be extrusive similar to the dacitic porphyry at "G". The hills 2 miles east of "G" contain the transition from pillowed dacite, such as occurs immediately north of "G", to the very hard dacite and trachyte which forms the higher hills to the east. The main Maclvor outcrop area contains two types of Wabassee volcanics - very hard fresh dark green dacites in the two high hills, and coarse mixed rhyodacite breccia on the slope down to Maclvor Lake. The relation between the two types is ' exposed in Alf's Hill and the south Maclvor hill located respectively 2.5 miles NW and 3 miles NNW of the SE corner of LaGauchetiere Twp. At these places the coarse rhyodacite •breccia presently overlies hard dacitic tuff and flow breccias and appears to fold around to the north between the main ..dacite hills and Maclvor Lake. A band of cherty tuff marks ' ...:. :,. 'the contact. between the two units and helps define the course of a synformal fold between Alf's Hill and the south Maclvor hill. The core of this fold is filled with diorite or dioritic greenstone similar to the hanging wall diorite at •"G", and granitic bodies inject the volcanics to the northeast and southwest. Two northeast-striking fresh diabase-gabbro - •dykes cut all the other rock types in the eastern part of the area. The recognition of chalcopyrite and sphalerite in the breccia along with quartz chlorite spherulite and stringer alteration in the. tuff led to the staking of 26 claims in the area.just east of our A.E.M. coverage (see separate memo of July 27, 1973).

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Coarse Wabassee type ,.hyodacite breccia taken 3, mile W of XacIvor.-Lake. u 14

ROCK DESCRIPTIONS Coarse Breccia The rhyodacite breccia is typically composed of 1/2" - 3" fragments of acid volcanic rock in a pale green rhyodacitic matrix. The matrix, which is slightly softer than the fragments, contains occasional quartz-eyes. Light green tuff bands intérlayered with the breccia contain up to 25% spherical quartz and epidote eyes (amygdules?), and similar rocks are shot through with many quartz-chlorite eyes and stringers carry minor pepperings of pyrite and chalcopyrite in the area between Alf's Hill and the hill 1.2 miles to the NW. Hard Dacitic Rocks Occurring to the south and east and geometrically underlying the coarse breccias, the Wabassee type dacite and trachytic rocks form the backbone of the MacIvor Hills.- These are generally fine grained green to grey rocks ranging from fine bedded dacitic tuff :(in contact with the cherty band) to dark green (flow?) breccia composed of uniform 2 m.m. - 5 m.m. angular dacite fragments in a slightly darker matrix, or to silica spotted grey dacite-rhyodacite or to grey trachyte full of 2-m.m. laths of plagiclase. Narrow layers of brittle black quartz-eye rhyolite form ledges on the slope north of Maclvor Hill. The hard dacite breccias may be subaerial equivalents of the Wabassee pillow lavas. The extreme hardness of the • rocks has been credited to their unusual freshness (M.Latulippe). The cherty band separating the two volcanic units at Aif's Hill is a green dacitic tuff carrying 1/4" - 2" disjointed • beds and lenses of grey chert. Some thicker chert beds occur on south Maclvor Hill. At both places the beds dip at less than 40' supporting the idea that they lie in a nose among generally steeper dipping units. Diorite & Gabbro The diorite south of MacIvor hills appears to be the same massive diorite as was cut in the drilling at "G". It is an even textured green intrusive, composed of about 65% green altered plagioclase, 30% actinolite or hornblende, and minor quartz. In contrast, the younger diabase gabbro dykes have a rough brown weathered surface, are composed of fresh white plagioclase feldspar, black pyroxene, and are magnetic enough to attract a compass. In Cavelier Twp., the gabbro dyke becomes a coarse hornblende diorite containing about 60% fresh plagioclase, quartz and 25% green hornblende. Coarser altered: phases contain minor pyrite and .chalcopyrite and 4♦ jkl! AJ

magnetite with epidotized and chloritized feldspar and mafic minerals. Granitic Rocks Two bodies of distinctive granitic rocks intrude the volcanic rocks to the southwest and northeast of the gabbro. The north- eastern "granite" is a hybrid monzonite containing 1/2" blotches of epidote or actinolite in pale pink sugary feldspar and quartz, and is thought to incorpozate some digested volcanic material from the voicaniC sequence.. The southwest neck of grey cquart2 granite is composed of about 40% quartz to 50% white feldspar dacite, and feldsar phenocryst rhyolite, and carries minor ~1 chalcopyrite and pyrrhotite in a shear zone. This_body_ which — , appears to be _a late._stage_. quar.tz.--.zich _volcanic neck,_ is . similar 'in composition to volcanic quartz. porphyryof the Watson Lake series.

STRUCTURE Regional geological' compilation (Fig. 4l) shows' the relationship between the Samson River and Matagami Areas. At Matagami the mineralized Wabassee - Watson Lake contact is folded around a west plunging anticline the nose of which disappears below surface near New Hosco Mine. Because of the poor exposure, direct structural observations are rare and interpretation must rely on geophysics or guess- work, •based on topographic linears visible through the clay overburden.. The structural setting of the area can be seen as a central area of older volcanic rock sandwiched between arms of mixed basic volcanic and sedimentary material. Watson Lake type volcanics occur at the "G" grid and possibly in core found near the Allard River. A late fault, approximately on line between these two places, produces a coincident topographic and magnetic linear which offsets one diabase-gabbro dyke near the Desmazures - Cavelier Twp. border, and cuts off the other dyke near the Desmazures - LaGauchetiere border. The fault could_be_the controlling structure on which the buried Watson Lake volcanics were lifted back to surface.. If so, the trace of the Watson Lake contact should swing south to close with the fault as it is shown doing along the topographic or magnetic trend along the Subercase River. To the east the contact would also probably swing south rather than join with the cherty tuff bed as proposed in my memo of July 27, 1973. This bed likely marks a higher contact in the Wabassee group. A Clue to structural style and direction is usually found in small folds in an area of this size, but here most •exposures of Wabassee type volcanics are either too competent or too little stressed to f. -., small folds. One fold under the c hert bed in south Xaclvor :fill plunges 20' to WNW on an axial plane dipping 60' to NNW. Rock unit contrasts and foliation direction trace out a series of folds about NW axes in the Macivor Hills. Here "Bell River" diorite injects rhyodacito breccia in a synformal nose separating two antiforms in which granitic plugs have injected the hard Wabassee dacites. The terms synform and antiform are used because some poor top determinations suggest that the sequence may be overturned. A fold nose can be seen in arcuate trends (in basic volcanics and sediments?) about 1/2 mile SE of Grid 15 and the northerly trend from its nose continues in that grid. This fold would appear to parallel the general NW trend of the Wabassee folds. The Watson Lake rocks near "G" grid are much more deformed than the Wabassee rocks. Although bedding directions are rare in these altered volcanic breccias they generally show a strong schistosity and recognisable shear folds. The prominent shear direction (and axial plane direction) is ENE with plunges generally between 60' and 90' to the NE, although one southwesterly plunge was noted. The ENE shearing seems to be imposed on an earlier northwesterly trend which can be seen in elongated chloritic inclusions in the altered volcanics south of the grid as well as the disjointed magnetic pattern over most of the grid (R.W.W. May/73). A NNW trend is apparent in the broad aeromagnetic high centered around "G" and in the elongation of the swamp between "G" grid and Lac au Rat. To Summarize

The Watson Lake volcanics reappear at surface in LaGauchetiere •Twp., possibly raised by a WNW trending fault which would be parallel to the shearing in "G" zone. The controlling con- tact is extrapolated along magnetic and topographic trends to swing south at the Subercase River to join the fault near the LaGauchetiere - Desmazures boundary. If this inter- pretation is correct the contact carrying the "G" zone would be analogous to the north limb of the Bell River anticline but this contact would lie inside rather than along the magnetic trends shown in a small scale map of March 12, 1973. Wabassee rocks show occasional northwest trending folds parallel to the Bell River fold axes, but the Watson Lake rocks are- sheared and folded on ENE planes. Flat dips are also common. Both cross structures and flat dips will need to be considered in planning future geophysics. In general .there is too little good data to develop a clear picture of the structure yet and care should be taken extrapolating from it until the recce. drilling has improved our knowledge, of the area. i.e., it is quite possible that'the interpreted closure west of "G" grid is incorrect so that the Watson •Lake voleanics extend further in that direction.

NEW CLAIti'.S During the geological and geophysical recce. work, 49 additional claims were staked to protect favourable geology or conductors which were not covered by the original group. 1ourtccn 9f th~=5g olaim5 ND 4567, 1 - 5; #3345681 1 - 5; #334569, 1 - 4), in 6 small groups, Were staked by A.J.Waiker; to cover the extensions of A.E.M. conductors into open ground. The recording of claims 03 and #4 - 334568 (east of grid #22) were not accepted because these claims lie in an area to be flooded. This grid contains some of the "Allard River" drill - holes with which Watson Lake type volcanics were tentatively identified. Drilling will be needed on Grids 21 and 22. if this is encouraging, some provision for ownership of the flooded area should be negotiated with the government. Nine claims were staked by Phelps Dodge to cover the con- ductors under Grid 030 (#336117, 1 - 4; #336118, 1 - 5), and 26 claims (#335190, 1 - 5; #335189, 1 5; #335188, 1 - 5; #335187, 1 - 5; #336177, 5; #331944, 1 - 5), were staked over an area of mineralization and favourable geology surrounding a small group of Selco claims 5 miles east of our "G" sulfide zone. Subsequent geophysics of the 9 claims-. group does not seem to warrant additional work. The 26 claims cover an area described in a memo of July 27, 1973. „7.-, Although later compilation suggests that the section probably lies within the Wabassee group, the necessity of additional work on .this untested mineralized contact zone remains. CONCLUSIONS & Economic mineral deposits of the Matagami area occur along the contact between the Wabassee and Watson Lake volcanics. After dipping below the erosion surface near Matagami the mineralized contact resurfaces on our "G" grid 15 miles west of New Hosco Mines. Work will be directed to locating additional sulfides and tracing the contact, first by drilling the Grid "G" Y.P. and outside A.E.M. anomalies, and then by another A.E.M. survey to fill the gap between our Questor survey and the Matagami area, where other pockets of Watson Lake volcanics may occur. The following anomalies lie close to the interpreted location of the contact and so should receive high priority in the current drilling:- (a)Low resistivity I.P. anomalies at 11S-52W, 4N-44E. (b)A.E.M. grids Nos. 9, 12A, 12B, 13, 16, 18, 19, 20, 21, 22. Of the other conductors 4fl.0 sits alone in• the central volcanic area along the general strike of the "G" zone but west of the interpreted fold of the Watson Lake contact. Drilling is re- quired and if successful, would disprove the closure of the structure at the Subercase River. This is an important hole. Grid 28 covers an area of very silicified rhyolite which is considered favourable geologically. Because of the importance of the area and the poor exposure, the other conductors should also be tested, but at this stage the most hope lies with those listed above. Early drilling along the southeast trend would determine whether Watson Lake type volcanics are.widespread in this area and how much haste is needed in mounting an A.E.M. survey to the east. To aid survey planning some recce. geology should be done in Daniel and Cavelier Twps. if time and personnel are available. The Alf's Hill claim group will be covered by the planned A.E.M. survey. Planning and interpretation of the survey should con- sider the strike changes and low dips shown by this area and probably repeated in overburdened areas. At a later stage "G" grid should be extended at least 4 miles west, and 6 miles east, and 2 miles north and south of 0+00. Survey of this grid by magnetometer and recce. resistivity I.P. (or whatever E.M. system proves practical in the area) could locate sulfides missed by the airborne survey and supply ground data needed to define the contact.

P. J. Clarke': PJC:as A P P E N D I X . •.

Notes on other Companies' drill core examined during the _geological recce. of Project 0121. i e ~ ,

a\ V t\! 1N D: t

Noranda core is stored in a log camp in the bulge on the Subercase River 1 mile south of Lac Long. Their drill collars are identified with metal markers to give an ex- cellent record of their work in the area. The core was checked against the generalized log given in PR 564, while looking for similarities between our Grid "G" rocks and the stored core. No glaring discrepencies were found . but the following points warrant mention;-

1. The drilling appears to have been directed at magnetic anomalies (Brivan Series) related to basic intrusives, strong graphite zones accompanying metasediment bands (KJ series), or in very hard siliceous volcanics (MS series). Some of the holes cut no apparent anomaly.

2. Vertical holes KJ-1, KJ-2, KJ-3 cut pyritic graphite slate in metasedimentary tuff. Core angles of about 40' indi- cate low dip angles (N?). The tuffite noted in KJ-5 is a cherty sediment layer between hard dacite, containing spherical quartz spots, and graphitic breccia. Coarse andesite was cut below the graphite. Hole KJ-8 cut well sanded polymictic grit containing angular fragments of volcanics and chert. 3. Hole BI-1 - drilled into a magnetic anomaly 4 miles SW of the mouth of.the Subercase River, cut feldspar porphyry cut in grid "G" and associated with "serpentinized_ peridotite" something like our chloritic soapstone unit. The -rocks differ from the ones at "G" in that the porphyry phenocrysts 'are true feldspar crystals, not altered clusters like the ones at "G" and that the serpentinized periodotite is magnetic. The rocks may be of different origins, but the similarity is strong enough to warrant some further research in that area. 4. -The MS series rocks are of particular interest for their high degree of silicic alteration, and the peculiar texture it develops. The core is commonly charged with pin head specks of dark chlorite rimmed with light silica, occa- sionally with sulfide cores. Hole MS-6 contains sections of siliceous slump breccia resembling a siliceous sinter in spherulitic altered rnyolite and quartz-eye rhyolite breccia. These rocks must have formed close to a volcanic vent, during late stage hydrothermal activity, and might have provided the silica deposited in the sedimentary chert horizons nearby. Geologically, the rocks are favourable for mineralization and care should be taken to explain any conductor in the area. The rock resembles the Wabassec rocks of the M aclvor Hills generally .in being extremely hard, and in carrying some chlorite silica spotting. Trachyte dykes cutting the volcanics of MS-5 are also more characteristic of the Wabassee volcanics. 5. Holes S-1, S-2 cut basic greenstone with a very few feldspar spots. No "polka dot gabbro" was seen in these holes.

ALCOURT & CHIMO

Core from the Alcourt Mined Ltd. and Chimo Gold Mines Ltd. drilling is stored at their respective camp sites on the two small ponds near Mile 12 and Mile 15 on the centre line of Desmazures Twp. Alcourt's core is stored in a rack so that the hole numbers and footages can still be deciphered, but the Chimo core is either spilled or lying on the ground in rotting boxes. Our visit was made to gain a general impre- ssion of the rock types drilled; no relogging was attempted.

Chimo Chimo's drilling appears to be following an E.M. survey and a magnetic survey, testing either strongly graphitic and nodular pyrite bearing slates and tuff, or magnetic anomalies in•basic volcanic and gabbroic rocks. Massive tuff "auto- breccia" healed by graphitic seams identical'to the rock cut by our drill holes on grid D-2, show the extent of this unit. The gabbro is mainly a fresh looking younger gabbro from the strong' NE-trending dyke, with associated finer green diorite,, similar in appearence although probably different from the "dioritic greenstone" cut in our drilling of grid "G". Some had dark acid volcanics or quartz-eye rhyolite occurs, but there is no direct equivilant to formations seen in LaGauchetiere Twp. or near New Hosco,and the type Wabassee and Watson Lake areas. Alcourt

The targets for Alcourt's drilling are probably magnetic . anomalies as most of the holes cut either some pyrrhotite or magnetite. No strong conductors were noted. The holes cut mainly green andesite as noted in the logs (PR-564), with ,some interlayered acid-intermediate volcanic rocks. The "flow breccia" noted in DDH-2 is a schistose carbonated rhyodacite tuff breccia. The "trachyte" appears to be a tuffaceous carbonate-bearing dacit`,(or rhyodacite?)schist. Coarse gabbro was cut at the bottom of DD;:-6 ( 422 QDNR PR-564) . Alcourt's drilling tests more volcanic and less sedimentary 'material than Chimo's,. although this difference may be more apparent than real because of the different type of targets being drilled.

• ALLY: lD RI= (? OV i. u ,5 X) Drilling on Grids 21 and 22 Six drill holes were located as shown on the area map. Core is stacked hole by hole near the Allard River but the boxes have weathered so that footages and 'hole numbers are not clear. Because QDNR PR-564 does not cover this drilling, the following details are noted here:- H-1 _(?) •.(ti 400') AR Samples #9 Fresh coarse grained gabbro (dyke). • #10 Altered (hybrid?) very coarse grained . actirolite and epi-feldspar diorite or gabbro (magnetic). #11 'Pink stained felds. porphyry dyke or ..'di.1.?':~.~r' ~• -~~•. crystal tuff. •#12 'Dacite. •H-2 (?) H-? (425') Core nearest river on S side of road predominantly rhyodacite flows and .tuff. AR Samples #17 Brecciated cherty rhyolite. #16 Hard grey rhyodacite lapilli tuff. #18 Feldspar spotted dacite (something similar to dacite porphyry). #19 Magnetic andesite - leucoxene specks (similar to dioritic greenStone). #20. Dacite porphyry - 1 to 2 m.m. felds. phenocrysts (crystal tuff) in dacite matrix. 'H-3 (600'Y AR Samples #7' Very coarse grained quartz diorite contains dissem. pyrite and large blue quartz eyes. #6 Chloritic andesite. #5 Chloritic andesite with siliceous band and sulfide. #8 Coarse grained andesite or gabbro. H-4 (' 600') AR Samples #1 Coarse andesite (with some magnetite .and minor sulfides) . 2 Fractured rhyodacite lapillistone. u3 • Coarse grained andesite flow and •daci..ic folds. porphyry crystal tuff. 44 Cnloritic greenstone.

H-5 (ti 550') A5. Samples 413 Carbonate-sericite schist 300', (schistose Rd-R) . 114 ' Massive Rd-R, chlorite streaks interstitial to blue spherulitic quartz or rhyolite specks. Similar to the footwall material at "G". 4l5 Chloritic andesite. (Dacite and dioritic greenstone also occur in the hole but •were not sampled) Allard River drilling cut a series of basic intrusive and volcanic rocks with some acid flows containing some rocks similar to the ones cut on Grid "G". The rhyodacitic schist and spherulitic-chloritic rhyodacite in hole 45 are of particular interest. No conductors were noted in the core so our conductors on Grids 21 and 22 apparently remain un- tested. Drill tests of these conductors are required. D' ARAGON MINES Drilling on Grid 41 D'Aragon's drilling cut wide intersections,of massive white • barren pyrite in sericitic schist and occasional sugary quartz- carbonate gangue. The sulfide was not assayed at the time of the original drilling but two samples verified the lack of values in it. Although it is difficult to hold much enthusiasm for tested conductors caused by barren pyrite, the following points are worth considering:- 1. Zones of barren pyrite often occur off the edge of base metal sulfide deposits. 2.' The coarse massive pyrite has been moved into its present position, and during the movement may have separated from more interesting base metal sulfides. 3. Some of the drilling was down dip and could have missed a parallel zone. • 4. The volcanic environment in which the sulfides occur is not unfavourable. D'Aragon's drill se-ups have been located in relation to our grid and on the accompanying photo overlay. Note that these locations do not match with the collar co-ordinates shown on D'Aragon's maps and that the location on photo Q71118-56 matches .the D'Aragon map. No extra time was spent to determine the cause of this discrepancy, so if our E.M. survey shows any interesting conductors which may have escaped:drill testing a ground check will be needed before spotting a hole.

ST. MARY'S EXPLORATIONS Collapsed core rack on E shore of Subercase River 2-1/2 miles N of the SE corner of Ste. Helene Twp.. contains core from 3 holes (01, #2, 03) with markings just barely discernible. DDH-1 and 2 begin in fine grained massive green andesite passing into carbonated rhyodacite tuff then very graphitic schist. Twenty- five feet of the sulfide bearing tuff were split in one of the holes, five feet of 'a graphitic pyrite sc"wist•were split in the other. DDH-3 AX ending in E core cuts banded andesite and carbonated rhyodacite which contains some disseminated pyrite and minor chalcopyrite in quartz stringers.

SELCO CORE Three holes HF-1, HE-2 and HL-2 are stored in a core shack on the E shore of the Samson River about 3-1/2 miles N of the Ste. Helene Twp. line. HF-1 cuts graphitic bands with disseminated to semi-massive pyrrhotite in carbonated rhyodacite breccia and tuff breccia containing some distinct quartz eyes. HE-2 (three boxes missing) cuts black- graphitic slate mixed with dacite breccia and some dark volcanic rock, and cut by felsic dykes and a fresh gabbro dyke. HL-2 is from Bapst Twp., outside the area of interest. Selco's log suggests that this hole (HL-2) cuts a major fault. The hole begins in schistose rhyodacite lapilli-tuff (reworked?) composed of pin head fragments and occasional graphite and pyritq seams. The tuff passes into graphitic slate interbanded with rhyolite breccia and to dacite-andesite'in the last 100'.