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
PAGES DE DIMENSION HORS STANDARD
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