Report on the Phelps Dodge Project Entrepôt Idéal Inc
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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.