Geology and Mineralization Island Copper Property, Sault Ste. Marie
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Geology and Mineralization of the Island Copper Property, Sault Ste. Marie, Ontario A. Hamid Mumin, Ph.D., P.Eng And John Camier, B.Sc. (Specialist) February, 2002 GEOLOGY AND MINERALIZATION of the ISLAND LAKE PROPERTY, SAULT STE. MARIE, ONTARIO February, 2002 Prepared by A. Hamid Mumin, Ph.D., P. Eng. and John Camier, B.Sc. (Specialist) Department of Geology, Brandon University, Brandon, Manitoba, Canada, R7A 6A9 Table of Contents Title Page…………………………………………………….…………………………….i Table of Contents…………………………………………………………..…...…………ii List of Tables……………………………………………………………………………..iv List of Figures…………………………………………………………………………….iv Summary..…………………………………………………………………………………1 Introduction and Terms of Reference……………………………………………………..3 Disclaimer…………………………………………………………….…………………...3 Property Description and Location………………………….………….…………………4 Accessibility, Infrastructure, Local Resources, Climate and Physiography………………4 History and Previous Work on the Island Copper Property……...……………………….9 Geological Setting………………………………………………………………………..17 Geology and Mineralization of the Island Copper Property ..…………..………27 Deposit Types……………………………………………………………………..……..31 Mineralization……………………………………………………………………………33 Exploration of the Island Copper Property...…………………………………………….34 Geophysics……………………………………………………………………….35 Drilling on the Island Copper Property……..…………………………………………...36 Sampling Method and Approach………………………………………………………...38 Sample Preparation, Analyses and Security……………………………………………..38 Data Verification…………………………………………………………………………38 iii Mineral Resource and Reserve Estimates…..……………………………………………39 Other Relevant Data ……………………………………………………………………39 Interpretation and Conclusions…………………………………………………………..39 Recommendations……………………………………...………………………………...42 References………………………………………………………………………………..43 Certificates……………………………………………………………………………….45 Appendix 1: Petrographic Reports………….……………………………………………47 Appendix 2: Whole Rock Geochemistry...………………………………………………57 iv List of Tables Table 1: Claim Standing………………………………………………………………….7 Table 2: Summary of Exploration..…………………………………………………..….10 Table 3: Significant Drill Hole Assays...…………………………………………..…….11 Table 4: Summary of Historical Drilling…………………………………….…………..37 List of Figures Figure 1: Location Map………………………………………….……………….….……5 Figure 2: Property Claims and Patents.…………………………….………….………….6 Figure 3: Historical Drill Hole Locations….………………………………..……….…..12 Figure 4: Historical Drill Hole Locations.…………………………………….…………13 Figure 5: Historical Drill Hole Locations.…………………………………….…………14 Figure 6: Historical Drill Hole Locations.…………………………………………….…15 Figure 7: Geology of the Island Copper Property………………………………….……18 Figure 8: Residual Gravity…………………………………………………………….…19 Figure 9: IP - Fraser Filtered Chargeability…...……………………………...…………20 Figure 10: Residual Aeromagnetic Data - Regional…………………..…………………21 Figure 11: Aeromagnetic Data and Mineral Occurrences.………………………………22 Figure 12: Regional Geology….…………………………………………………………24 Figure 13: Trench at the Main Copper Showing – Photograph….………………………26 Figure 14: Geological Contact Between the Gros Cap Gneiss Breccia and Mineralized Albite Granite Breccia - Photographs…….……….………………………..30 Figure 15: Schematic Geological Model for Island Copper Mineralization…..…………41 v Summary This report on the Geology and Mineralization of the Island Copper Property was prepared at the request of the Directors of Golden Temple Mining Corporation (hereafter referred to as the Company). The report describes the geology and mineral potential of the property, and presents a summary of the relevant geological work that has been carried out to date. The Island Copper property is located approximately 19 kilometres northeast of Sault Ste. Marie, Ontario, north of the cottage community of Island Lake (Figure 1). The property is situated northwest of the junction between Highways 556 and 552, and straddles Highway 552. The Island Copper property is comprised of four Falconbridge claims, three YMCA patents and the Nystedt leasehold patents (Figure 2, Table 1). The property hosts significant copper mineralization in altered, hematite-rich albite granite breccias at and near the contact with Gros Cap granite and granodiorite gneiss. The mineralized breccias occur near the intersection of major structures, and are accompanied by alkali metasomatism (Na +/- K enrichments), and chlorite, amphibole and Fe-oxide alteration. The copper occurs as chalcopyrite associated with pyrite and Fe-oxides. At least 37 diamond drill holes were previously drilled on the southeastern portion of the property to a maximum vertical depth of ~ 137 meters. Copper values are reported for most of the drill holes, but cannot be independently verified due to improper storage of the core. Recent work includes detailed geology, surface sampling, and magnetic, gravity and chargeability geophysical surveys. Coincident chargeability and gravity anomalies remain largely untested. It is recommended that this property be further explored in the light of recent advances in the understanding of Fe-oxide copper-gold type deposits. The historical diamond drilling and surface data needs to be replotted and evaluated for: 1) any trends in copper grades, 2) variations in intensity and type of alteration mineralogy, 3) variations in the style and intensity of brecciation, and 4) the association of major and subordinate structures with brecciation, hydrothermal alteration and mineralization. These evaluations combined with a general and thorough overall property evaluation, including the current geology and 1 geophysics should be carried out prior to any decision regarding how much and where further diamond drilling is conducted. It is also recommended that the assay procedures be tested using several independent methods (including NAA) on splits of the same sample, in order to determine the best method to assay for copper and gold in this particular deposit. 2 Introduction and Terms of Reference This report on the Geology and Mineralization of the Island Copper Property was prepared at the request of the Directors of Golden Temple Mining Corporation (hereafter referred to as the Company), in order to fulfill certain regulatory reporting requirements following the signing of an Option and Joint Venture Agreement between Falconbridge Limited and Golden Temple Mining Corp. The report describes the geology and mineral potential of the property, and presents a summary of the relevant geological work that has been carried out to date. This report is an independent geological assessment of the property as of the date of writing. Both writers have previously investigated this property. A petrographic report was prepared by Camier and Mumin (1999) for Falconbridge, describing the petrography of selected samples from the Island Copper property (Appendix 1). Mr. Camier visited the property briefly in the summer of 1999, and carried out detailed mapping and sampling of the property for 6 weeks in July-August, 2000, and a further 2 weeks in July, 2001. Mr. Camier researched the historical work on this property in 2000 and 2001, and prepared two further reports with maps and diagrams for Falconbridge Limited, based on both historical and current geological information (Camier and Mclellan, 2000; Camier and Oosterman, 2001). The present evaluation is based largely on these reports, current and historical data, and the writers experience on the property. Both writers are knowledgeable about, and active in, the investigation of Proterozoic Fe-oxide Copper-Gold deposits in Canada. Disclaimer All statements regarding historical diamond drilling and associated assays cannot be independently verified, since the drill core has not been maintained in a useable condition. Also, historical surface assays have not been independently verified. However, drill logs with assay data are available for review. 3 Property Description and Location The Island Copper property is located approximately 19 kilometres northeast of Sault Ste. Marie, Ontario, north of the cottage community of Island Lake (Figure 1). The property is situated northwest of the junction between Highway's 556 and 552, and straddles Highway 552. The Island Copper property is comprised of four Falconbridge claims, three YMCA patents and the Nystedt leasehold patents (Figure 2, Table 1). All claims were in good standing at the time of writing as indicated in Table 1. The Falconbridge claims bound the patents held by the YMCA of Sault Ste. Marie on the north, west and southwest. The YMCA patents contain the main copper showings. Falconbridge currently has an option to earn a 100% interest in the YMCA patents as defined in the Falconbridge-YMCA option agreement (February 21, 2000). Falconbridge also has options on the Nystedt patents, which consist of two surface and mining leasehold patents owned by the Nystedt family of Sault Ste. Marie, Ontario. The Nystedt patents were optioned to Falconbridge Limited in August 2000. These claims are immediately south of the YMCA patents. Accessibility, Infrastructure, Local Resources, Climate and Physiography The Island Copper property is easily accessed by paved highway from Sault Ste. Marie (Figure 1). The property can be accessed by traveling north along the Trans-Canada Highway (#17) for ~ 15 kilometers to highway 556 at Heyden. Proceed northeast on 556 for ~ 5 kilometers to the junction of Highways 552 and 556, which is in the southeast corner of the property. The property straddles Highway 552 for approximately 3.5 kilometers NNW of the junction with Highway 556