Exploration in British Columbia 1990
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Province of l3ritish Columbia MINERAL RESOURCES DMSION Ministry of Energy, Mines and Geological Survey Branch Petroleum Resources Hon. J. Weisgerber, Minister EXPLORATION IN BRITISH COLUMBIA 1990 Part A - Overview of Exploration Activity Part B - GeologicalDescriptions of Properties British Columbia Cataloguing in Publicatlon Data Main ently undertitle: Exploration in British Columbia.- 1975- Annual. With Geology in British Columbia, ISSN 0823-1257; and, Mining in British Columbia,ISSN 0823-126, continues: Geology, exploration, and miningin British Columbia, ISSN WS-1027. 1979 published in 1983. Issuingbcdyvaries: 1975-1976, Ministvof Minesand Petroleum Resources; 1977.1965; Ministry of Encrgy, Mines and Petroleum Resources; 1986- ,Geological Survey Branch. VICTORIA ISSN 0823.2059 -Exploration in British Columbia. BRITISH COLUMBIA 1. Prospecting-British Columbia. Periodicals. 2. CANADA Geology, Economic - British Columbia. Periodicals. 1. British Columbia. Ministlyof Energy, Mines and JULY 1991 Petroleurn Resources. Ill. British Columbia. Geological Survey Branch. TN270.E96 622.1’W711 Rev. April 1987 Eskay Creek Exploration Camp 1990, looking northeast. iii FOREWORD 1990 has been a year of significant change for the mineral exploration and mining industry in British Columbiaas the exploration industryadjusted to thetermination of FlowThroughSharefinancingfor exploration. The GoldenBear mine officially reached commercial production in February, the Sullivan Pb-Zn mine reopened in November after a lengthy shutdown,and theSnip mine was closedto production at yearend. Leading developments for theyear included a new trend in metals exploration with a vigorousfocus on copper-gold-porphyry systems such as Mount Milligan, Mount Polley and GaloreCreek. In addition, continued encouraging results fromthe impressive EskayCreek area in the Golden Triangle made thisthe busiest explorationarea in the Province. Claim staking inthe province continued on an upwardtrend to exceed 96000 units bythe end of December, 1990. This is anincrease of 3 per cent over 1989and reflects, inlarge part, new activity in copper-gold-porphyry exploration. Exploration continued to emphasize precious metals butthere is a growinginterest in base metals, particularlycopper and zinc. The British Columbia Geological Survey Branch againhad an active yearof field surveying withprojects in regional mapping, mineral dcpositsand regional geochemistry.Our new focus inthe area of environmental and surficial geology is reflected in many of the papers in this issue of Exp/oru/ion in Bririslt Columbia. The end of the 1985-1990 Canadiaflritish Columbia Mineral Development Agrccment has brought to a completion manyof the mapping and deposits research programs carried out under this program. This very successful program designed to assist and stimulate explorationand development in B.C. is expected to be renewed in 1991. W.R. Smyth Chief Geologist V PART A OVERVIEW OF EXPLORATION ACTIVITIES TABLE OF CONTENTS Page Page BRITISH COLUMBIA EXPLORATION AND SouthernTrough Quesnel ...........45 DEVELOPMENT HIGHLIGHTS FOR 1990 ... 1 Barkerville-Cwiboo Mountains .......45 Introduction ..................... 1 Fraser Plateau .................45 Advanced Projects .................Areas 3 Other ..................45 Mines ........................ 3 Placer ........................ 46 Volcanogenic and Sediment-HostedMassive Coal ......................... 46 Sulphide Deposits ............... 3 Mine Development Review ............46 Epithermal Deposits ................7 Operating Mines ........................... 46 Porphyry Deposits ................. 7 Mesothermal Veins and Transitional Deposits . 9 SOUTH CENTRAL DISTRICT ...........47 Other Significant Deposits .............10 Introduction ..................... 47 Summary and aLook at 1991 ................. 10 Highlights ...................... 49 Mineral Exploration ................51 NORTHWESTERN DISTRICT ............23 Adams Lake Area ...............51 Introduction ..................... 23 Kamloops .Bonaparte Area ......... 53 Highlights ...................... Kamloops23 .Nicola Belt ............ 53 Trends ........................ 24 Princeton .'Mameen Area ..........54 Opportunities .................... 25 Hedley Area .................. 55 Mineral Exploration ................ 25 Okanagan Region ...............55 Tatshenshini River Area ............26 Vernon Mining Division .........55 Atlin ....................... 26 Qsoyoos and Greenwood Mining Cassiar ..................... 26 Divisions ...........55 BritishColumbia's "Golden Horseshoe" ...29 Revelstoke Area ................57 'Ihlsequah River .Tatsamenie Lake Area . 29 River Bridge Area ............... 57 Dease Lake. Mount 57 Edziza Area ......Minerals31 Industrial ................. Galore Creek Area .............. 32 Operating Mines .................. 58 Forrest Kerr Area ...............32 Introduction ..................58 Newmont Lake Area .............33 Iskut River Area ................ 33 KOOTENAY DISTRICT ................61 Eskay Creek Area ...............34 Introduction ..................... 61 Sulphurets Creek Area ............35 Trends and Opportunities ............. 61 Stewart Mining Camp .............35 Trends in the East Kootenays ...........61 Alice Arm Area ................36 Cranbrook-Yahk Area ............61 North Coast .................. 36 Rocky MountainTrenchandEast ......63 Todoggone River Area ............36 Creston Area ..................63 Babine Lake Area ............... 36 Opportunities in the East Kootenays .......63 Smithers .Houston Area ........... 37 Trends inthe West Kootenays ...........63 Whitesail Lake Area .............37 Nelson-Salmo-Rossland Area ........ 63 Coal ......................... 38Area Greenwood ...............63 Placer ........................ 38 Opportunities in the WestKootenays 63 ....... Development Projects ............... 33 Mineral Exploration ................64 Operating Mines ........................... 38 Greenwood Area ...............64 Nelson-Salmo-RosslandArea ........64 CENTRAL DISTRICT .................41 Rossland Group ..............64 Introduction ..................... 41 Vein .................... 64 Highlights ...................... 41 Skarn .................... 65 Trends and Opportunities .............41 Other .................... 65 Mineral Exploration ................41 Northern QuesnelTrough ...........43 vii Page Page Slocan Area ..................65 TABLES CrestonArea ................. 65 Table A-la. New Mines, Developmentand Cranbrook-Yahk65 Area ............ Advanced Exploration Projects ........ 6 RockyMountain Trench and East. ..... 66 Table A-lb. Exploration Highlights ........ 8 Coal ......................... 66 Table A-2. Mine Development Review Process . 11 Industrial Minerals ................ 66 Table A-3. Active Exploration Properties .... 13 Operating Mines .................. 67 Table A-4. Development Stage Projects Northwestern District Northwestern ............ 29 SOUTHWESTERN DISTRICT ........... 66 Table A-5. Advanced Exploration Projects, Introduction ..................... 69 District Northwestern ............ 31 Mineral Exploration ................ 69 Table A-6. Active Mines inthe Northwest Vancouver Island 69 Island Vancouver ...............39 District, 1990 ................. Southwestern Mainland 71 MainlandSouthwestern ........... Table A-7. Operating Mines in Central Queen Charlotte Islands ...........43 72 District, 1990 ................. Coal ......................... 72 Table A-8. Summary of Exploration & Industrial Minerals ................ 73 Development Expenditures ......... 47 Placer. ....................... 73 Table A-9.South Central District Exploration Producing Mines ........................... .73 &Development Expenditures at M ines 47 Operating Mines ............... PROSPECTORSASSISTANCEPROGRAM ... 75 Table A-10. MineProduction and Reserves Introduction .................... 75 1989-1990, South Central District ...... 59 Financial.. Assistance ................ 75 Table A-11. Operating Mines in Kootenay Tra~ning.................................. .77 District, 1990 ................. 68 viii PART B - GEOLOGICAL DESCRIPTIONS OF SELECTED PROPERTIES B-1 George J. Simandl, Kirk D. Hancwk, Suzanne Paradis and Jana Simandl: Quick Field Method for Identification of Magnesite-Bear- ing Rocksin Mount BrussilofArea, Southeast- ern British Columbia (8W/12,13) ......... 81 B -2 A. Legun: Millie Mack(82K) ..............87 B -3 Greg Stewart and Rolf Schmitt: Mineral Po- tential Evaluation of the Billygoat Creek Pro- posed Addition to Garibaldi Provincial Park New Westminster Mining Division (9W/ZE) ............................. .93 B-4 SJ. Sibbick and J.L. Gravel: Talus-fines Geo- chemistry of the Pellaire Mesothermal Gold Vein Prospect (920/4E) ................ ,101 B-5 Stephen J. Day and Tim Giles: An Investiga- tion of the Gold Content of Placer Tailings in the Likely-Wells Area (93H/4; 93B/12,13, 16;93G/l) ............................ ,109 B-6 J.L. Gravel and S J. Sibbick: Geochemical Dis- persion in Complex Glacial Driftthe at Mount Milligan, Copper-Gold Porphyry Deposit (93N/lE, 930/4W ..................... .117 B-7 D.E. Kerr and ET. Bobrowsky: Quaternary Ge- ology and Drift Exploration at Mount Milligan (93N/lE,930/4W) and Johnny Moun- tain (104B/6E,7W, low, 11E), British Columbia ............................ ,135 B-8 Barry Ryan: Geology and Potential Coal and Coalbed-Methane Resources of the Seatoo Coal Basin (93/M3,7) ................. .153 B-9 CJ. Greig: Reconnaissance Lithogeochemistry,