General Information
Secondary Commodities: cobalt, copper, gold, silver
Aliases: G
Deposit Type(s): Iron Oxide Breccias & Veins (Wernecke Breccias)
Location(s): 64°56'29" N - -133°22'23" W
NTS Mapsheet(s): 106C14
Location Comments: 1 Kilometres
Hand Samples Available: No
Last Reviewed:
Capsule
Work History
Staked as Mac cl 1-8 (Y69059) and Otto cl 1-8 (Y69068) in Mar/73 by Menika Mining Ltd, which added the Mad cl 1-8 (Y88678) in May/74, conducted an airborne mag-EM survey and drilled one hole (57.9 m) later in the year.
Restaked as Cam cl (YA1940) in Apr/76 by Magni Development Ltd and optioned to New Minex Resources Ltd, which drilled 2 x-ray holes (58.5 m) later in the year on the Cam 3 claim.
Capsule Geology
The region is underlain by a metamorphosed and altered sequence of Early Proterozoic Wernecke Supergroup clastic and carbonate rocks (Fairchild Lake Group, Quartet Group and Gillespie Lake Group, from oldest to youngest) that are intruded by Early to Middle Proterozoic mafic sills and dykes, and cut by Middle Proterozoic Wernecke Breccia. To the east, Wernecke Supergroup rocks are unconformably overlain by Middle Proterozoic Pinguicula Group rocks. According to Thorkelson (2000), Wernecke Breccia development is best modeled as a set of hydrothermal and/or phreatic breccias; brecciation being caused by explosive expanson of volatile-rich fluids. Hunt (2005) attributed Wernecke Breccia formation to periodic over-pressuring of dominantly basinal fluids, which lead to repeated brecciation of host strata and mineral precipitation.
Minor amounts of vein float have been found, from which selected specimens assay up to 4% copper, 4% cobalt, 2.7 g/t gold and 10.3 g/t silver. The claims are underlain by Fairchild Lake Group limy argillite cut by a few mafic dykes. The drill holes tested geophysical anomalies and were unmineralized.
A second occurrence (Laznicka's No. 24) 2 km to the southwest where chalcopyrite and cobaltite occur in veinlets cutting bleached Fairchild Lake Group argillite near a Wernecke Breccia contact.
References
ETCETERA MANAGEMENT LTD, Apr/77. Assessment Report *#091302 by L. Sookochoff.
GEORGE CROSS NEWSLETTER, 17 Aug/76.
GORDEY, S.P. AND MAKEPEACE, A.J., 2003. Yukon Digital Geology, version 2.0, S.P. Gordey and A.J. Makepeace (comp); Geological Survey of Canada, Open File 1749 and Yukon Geological Survey, Open File 2003-9 (D).
LAZNICKA, P., 1977, Geology and mineralization in the Dolores Creek area, Bonnet Plume Range, Yukon. Geological Survey of Canada, Paper 77-1A, p. 435.
MENIKA MINING LTD, May/75. Assessment Report *#061245 by D.G. Mark.
MINERAL INDUSTRY REPORT 1974, p. 63.
THORKELSON, D.J. AND WALLACE, C.A., 2000. Geology and mineral occurrences of the Slats Creek, Fairchild Lake and "Dolores Creek" areas, Wernecke Mountains, Yukon (106D/16, 106C/13, 106C/14). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Bulletin 10, 73 p.
Staked as Mac cl 1-8 (Y69059) and Otto cl 1-8 (Y69068) in Mar/73 by Menika Mining Ltd, which added the Mad cl 1-8 (Y88678) in May/74, conducted an airborne mag-EM survey and drilled one hole (57.9 m) later in the year.
Restaked as Cam cl (YA1940) in Apr/76 by Magni Development Ltd and optioned to New Minex Resources Ltd, which drilled 2 x-ray holes (58.5 m) later in the year on the Cam 3 claim.
Capsule Geology
The region is underlain by a metamorphosed and altered sequence of Early Proterozoic Wernecke Supergroup clastic and carbonate rocks (Fairchild Lake Group, Quartet Group and Gillespie Lake Group, from oldest to youngest) that are intruded by Early to Middle Proterozoic mafic sills and dykes, and cut by Middle Proterozoic Wernecke Breccia. To the east, Wernecke Supergroup rocks are unconformably overlain by Middle Proterozoic Pinguicula Group rocks. According to Thorkelson (2000), Wernecke Breccia development is best modeled as a set of hydrothermal and/or phreatic breccias; brecciation being caused by explosive expanson of volatile-rich fluids. Hunt (2005) attributed Wernecke Breccia formation to periodic over-pressuring of dominantly basinal fluids, which lead to repeated brecciation of host strata and mineral precipitation.
Minor amounts of vein float have been found, from which selected specimens assay up to 4% copper, 4% cobalt, 2.7 g/t gold and 10.3 g/t silver. The claims are underlain by Fairchild Lake Group limy argillite cut by a few mafic dykes. The drill holes tested geophysical anomalies and were unmineralized.
A second occurrence (Laznicka's No. 24) 2 km to the southwest where chalcopyrite and cobaltite occur in veinlets cutting bleached Fairchild Lake Group argillite near a Wernecke Breccia contact.
References
ETCETERA MANAGEMENT LTD, Apr/77. Assessment Report *#091302 by L. Sookochoff.
GEORGE CROSS NEWSLETTER, 17 Aug/76.
GORDEY, S.P. AND MAKEPEACE, A.J., 2003. Yukon Digital Geology, version 2.0, S.P. Gordey and A.J. Makepeace (comp); Geological Survey of Canada, Open File 1749 and Yukon Geological Survey, Open File 2003-9 (D).
LAZNICKA, P., 1977, Geology and mineralization in the Dolores Creek area, Bonnet Plume Range, Yukon. Geological Survey of Canada, Paper 77-1A, p. 435.
MENIKA MINING LTD, May/75. Assessment Report *#061245 by D.G. Mark.
MINERAL INDUSTRY REPORT 1974, p. 63.
THORKELSON, D.J. AND WALLACE, C.A., 2000. Geology and mineral occurrences of the Slats Creek, Fairchild Lake and "Dolores Creek" areas, Wernecke Mountains, Yukon (106D/16, 106C/13, 106C/14). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Bulletin 10, 73 p.
Work History
| Date | Work Type | Comment |
|---|---|---|
| 12/31/1976 | Drilling | Two holes, 59 m. X-Ray holes on Cam 3 claims. |
| 12/31/1974 | Drilling | One hole, 58 m. |
| 12/13/1974 | Airborne Geophysics | Also magnetic survey. |
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 095634 | 2007 | YUP February Internal Technical Report, Season 2007 Describing Mapping, Prospecting and Diamond Drilling at the Lumina Property | Gamma-Ray Spectrometry - Airborne Geophysics, Diamond - Drilling, Drill Core - Geochemistry, Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Scintillometer - Ground Geophysics, Prospecting - Other | 15 | 4367.20 |
| 095646 | 2007 | 2007 Geological, Geochemical and Geophysical Report on the Werneckes Project | Diamond - Drilling, Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Magnetics - Ground Geophysics, Scintillometer - Ground Geophysics, Prospecting - Other, Backhoe - Trenching, Hand - Trenching, Handblast - Trenching | 28 | 6537.96 |
| 094953 | 2006 | Assessment Report Describing Airborne Geophysics, Mapping, Prospecting and Diamond Drilling | Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics, Diamond - Drilling, Drill Core - Geochemistry, Bedrock Mapping - Geology, Prospecting - Other | 22 | 2602.89 |
| 094956 | 2006 | 2006 Geological, Geochemical and Geophysical Report on the Werneckes Project | Reverse Circulation - Airborne Geophysics, Rock - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology, Scintillometer - Ground Geophysics, Prospecting - Other | ||
| 091302 | 1976 | [Drill Logs for 2 Holes on the Cam Claims] | Diamond - Drilling | 2 | 58.52 |
| 061565 | 1976 | Report on Diamond Drilling Program Pterd, Knit, Ptoes Claims | Diamond - Drilling | 5 | 470.61 |