General Information
Secondary Commodities: lead, zinc, silver
Deposit Type(s): Vein Polymetallic Ag-Pb-Zn+/-Au
Location(s): 64.848330 N, -133.689720 W
NTS Mapsheet(s): 106C13
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Lad and Ed cl (Y33374) in Jun/70 by G. Dobson. Restaked as Lad cl (Y57421) in March/72 by Cypress Resources Ltd, which added more Lad cl (Y68564) later in the year and carried out magnetometer and EM surveys, grid soil sampling, hand trenching, and drilled two holes (163.7 m) in 1972-73.
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.
Pyrite, galena and sphalerite occur in an east-trending shear zone 76 m wide which dips 70° north. It cuts thin-bedded Gillespie Group dolostone that strikes northwest and dips 35° northeast. An overburden-covered limestone-argillite contact follows the east side of the property.
Within the shear zone, chip samples at 4.6 to 7.6 m intervals ranged from 0.04 to 0.09% Pb, 0.03 to 1.11% Zn and 4.1 to 7.5 g/t Ag. The 1973 work was directed towards the overburden-covered east extension of the shear zone.
References
CYPRESS RESOURCES LTD, Apr/72. Prospectus Report by R.S. Adamson.
CYPRESS RESOURCES LTD, Nov/72. Prospectus Report by R.S. Adamson.
CYPRESS RESOURCES LTD, Aug/73. Vancouver Stock Exchange Open File Report by P.P. Nielsen and G.C. Gutrath.
GEORGE CROSS NEWSLETTER, 15 Sep/72.
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).
THORKELSON, D.J. AND WALLACE, C.A., 1994. Geological Setting of mineral occurrences in Fairchild Lake map area, (106C/13), Wernecke Mountains, Yukon. In: Yukon Exploration and Geology, 1993, Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 79-92.
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 Lad and Ed cl (Y33374) in Jun/70 by G. Dobson. Restaked as Lad cl (Y57421) in March/72 by Cypress Resources Ltd, which added more Lad cl (Y68564) later in the year and carried out magnetometer and EM surveys, grid soil sampling, hand trenching, and drilled two holes (163.7 m) in 1972-73.
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.
Pyrite, galena and sphalerite occur in an east-trending shear zone 76 m wide which dips 70° north. It cuts thin-bedded Gillespie Group dolostone that strikes northwest and dips 35° northeast. An overburden-covered limestone-argillite contact follows the east side of the property.
Within the shear zone, chip samples at 4.6 to 7.6 m intervals ranged from 0.04 to 0.09% Pb, 0.03 to 1.11% Zn and 4.1 to 7.5 g/t Ag. The 1973 work was directed towards the overburden-covered east extension of the shear zone.
References
CYPRESS RESOURCES LTD, Apr/72. Prospectus Report by R.S. Adamson.
CYPRESS RESOURCES LTD, Nov/72. Prospectus Report by R.S. Adamson.
CYPRESS RESOURCES LTD, Aug/73. Vancouver Stock Exchange Open File Report by P.P. Nielsen and G.C. Gutrath.
GEORGE CROSS NEWSLETTER, 15 Sep/72.
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).
THORKELSON, D.J. AND WALLACE, C.A., 1994. Geological Setting of mineral occurrences in Fairchild Lake map area, (106C/13), Wernecke Mountains, Yukon. In: Yukon Exploration and Geology, 1993, Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 79-92.
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.
Location Map
Last Updated: Jul 6, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1972 | Drilling: Diamond | Two holes, 163.6 m. |
| 1972 | Geochemistry: Soil | |
| 1972 | Ground Geophysics: Magnetics | Also EM survey. |
| 1972 | Other: Prospecting | |
| 1972 | Trenching: Hand |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - platformal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup: Wernecke
Group/Suite: Gillespie Lake
Formation:
Member:
Terrane: Laurentia
Period Max: Statherian
Age Max: 1800 MA
Period Min: Statherian
Age Min: 1600 MA
Rock Major: dolostone, siltstone, shale, sandstone
Rock Minor:
Reference: Thorkelson & Wallace (1998) - YGS GM 1998-10
Geological Unit (1M): lPG
Geological Unit (250K): lPG
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 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 |
| 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 |
