General Information
Deposit Type(s): Unknown
Location(s): 61.589440 N, -131.170560 W
NTS Mapsheet(s): 105G11
Location Comments: 1 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked as Gun cl (Y7481) in May/66 following airborne mag and EM surveys by Atlas EL, which carried out geochem sampling and mapping later in the year. Restaked as Bev 1-32 cl (Y83483) in Oct/74 following airborne surveys by Hudson Bay M & S, which conducted ground mag and EM surveys and drilled one hole (137.8 m) in 1975.
Capsule Geology
Geological mapping (Murphy et al., 2001) shows the region is dominantly underlain by a layered sequence of Devonian to Early Mississippian metavolcanic and metasedimentary rocks of the Yukon-Tanana Terrane (YTT). The YTT is a volcanic-plutonic pericratonic arc assemblage that was strongly deformed and metamorphosed by Late Triassic time. Volcanic-hosted massive sulphide deposits exist at different stratigraphic positions within the YTT.
The occurrence is mapped (Murphy et al., 2001) as being underlain by the Upper Devonian Fire Lakes metavolcanic unit. Geological Survey of Canada maps indicate a 400 gamma aeromagnetic anomaly in a low, overburden- covered area. Atlas found schist float with many small intrusive dikes, but no mineralization.
References
ATLAS EXPLORATION COMPANY LTD, 1966. Assessment Report *#017580 by J.S. Brock.
ATLAS EXPLORATION COMPANY LTD, 1967. Assessment Report *#017746 by J.S. Brock.
BOND, J.D., MURPHY, D.C., COLPRON, M., GORDEY, S.P., PLOUFFE, A., ROOTS, C.F., LIPOVSKY, P.S., STRONGHILL, G., AND ABBOTT, J.G., 2002. Digital compilation of bedrock geology and till geochemistry, northern Finlayson Lake map area, Southeastern Yukon (105G), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File Report, 2002-7(D) and Geological Survey of Canada Open File 4243.
MURPHY, D.C. and PIERCEY, S.J., 1999. Geological map of parts of Finlayson Lake (105G/7, 8 and parts of 1, 2, and 9) and Frances Lake (parts of 105H/5 and 12) map areas, southeastern Yukon (1:100 000-scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 1999-4.
MURPHY, D.C. AND PIERCEY, S.J., 2000. Syn-mineralization faults and their re-activation, Finlayson Lake massive sulphide district, Yukon-Tanana Terrane, southeastern Yukon. In: Yukon Exploration and Geology 1999, D.S. Emond and L.H. Weston (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 55-66.
MURPHY, D.C., COLPRON, M., GORDEY, S.P., ROOTS, C.F., ABBOTT, G., AND LIPOVSKY, P.S., 2001. Preliminary bedrock geological map of northern Finlayson Lake area (NTS 105 G) Yukon Territory (1:100 000 scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 2001-33.
MURPHY, D.C., COLPRON, M., ROOTS, C.F., GORDEY, S.P. AND ABBOTT, J.G., 2002. Finlayson Lake Targeted Geoscience Initiative (southeastern Yukon) , Part 1: Bedrock geology. In: Yukon Exploration and Geology 2001, D.S. Emond, L.H. Weston and L.L. Lewis (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 189-207.
Staked as Gun cl (Y7481) in May/66 following airborne mag and EM surveys by Atlas EL, which carried out geochem sampling and mapping later in the year. Restaked as Bev 1-32 cl (Y83483) in Oct/74 following airborne surveys by Hudson Bay M & S, which conducted ground mag and EM surveys and drilled one hole (137.8 m) in 1975.
Capsule Geology
Geological mapping (Murphy et al., 2001) shows the region is dominantly underlain by a layered sequence of Devonian to Early Mississippian metavolcanic and metasedimentary rocks of the Yukon-Tanana Terrane (YTT). The YTT is a volcanic-plutonic pericratonic arc assemblage that was strongly deformed and metamorphosed by Late Triassic time. Volcanic-hosted massive sulphide deposits exist at different stratigraphic positions within the YTT.
The occurrence is mapped (Murphy et al., 2001) as being underlain by the Upper Devonian Fire Lakes metavolcanic unit. Geological Survey of Canada maps indicate a 400 gamma aeromagnetic anomaly in a low, overburden- covered area. Atlas found schist float with many small intrusive dikes, but no mineralization.
References
ATLAS EXPLORATION COMPANY LTD, 1966. Assessment Report *#017580 by J.S. Brock.
ATLAS EXPLORATION COMPANY LTD, 1967. Assessment Report *#017746 by J.S. Brock.
BOND, J.D., MURPHY, D.C., COLPRON, M., GORDEY, S.P., PLOUFFE, A., ROOTS, C.F., LIPOVSKY, P.S., STRONGHILL, G., AND ABBOTT, J.G., 2002. Digital compilation of bedrock geology and till geochemistry, northern Finlayson Lake map area, Southeastern Yukon (105G), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File Report, 2002-7(D) and Geological Survey of Canada Open File 4243.
MURPHY, D.C. and PIERCEY, S.J., 1999. Geological map of parts of Finlayson Lake (105G/7, 8 and parts of 1, 2, and 9) and Frances Lake (parts of 105H/5 and 12) map areas, southeastern Yukon (1:100 000-scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 1999-4.
MURPHY, D.C. AND PIERCEY, S.J., 2000. Syn-mineralization faults and their re-activation, Finlayson Lake massive sulphide district, Yukon-Tanana Terrane, southeastern Yukon. In: Yukon Exploration and Geology 1999, D.S. Emond and L.H. Weston (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 55-66.
MURPHY, D.C., COLPRON, M., GORDEY, S.P., ROOTS, C.F., ABBOTT, G., AND LIPOVSKY, P.S., 2001. Preliminary bedrock geological map of northern Finlayson Lake area (NTS 105 G) Yukon Territory (1:100 000 scale). Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, Open File 2001-33.
MURPHY, D.C., COLPRON, M., ROOTS, C.F., GORDEY, S.P. AND ABBOTT, J.G., 2002. Finlayson Lake Targeted Geoscience Initiative (southeastern Yukon) , Part 1: Bedrock geology. In: Yukon Exploration and Geology 2001, D.S. Emond, L.H. Weston and L.L. Lewis (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 189-207.
Location Map
Last Updated: Aug 28, 2018
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1975 | Drilling: Diamond | One hole, 137.77 m. |
| 1975 | Ground Geophysics: Magnetics | Also EM survey. |
| 1974 | Airborne Geophysics: Electromagnetic | Also magnetic survey. |
| 1966 | Airborne Geophysics: Electromagnetic | Also magnetic survey. |
| 1966 | Geochemistry: Soil | |
| 1966 | Geology: Bedrock Mapping |
Regional Geology - Terrane
Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian
Regional Geology - Bedrock
Supergroup:
Group/Suite: Grass Lakes
Formation: Fire Lake
Member:
Terrane: Yukon-Tanana
Period Max: Devonian
Age Max: 365 MA
Period Min: Devonian
Age Min: 357 MA
Rock Major: greenstone
Rock Minor:
Reference: Murphy et al. (2001) - YGS OF 2001-33
Geological Unit (1M): DMF
Geological Unit (250K): DMF1
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 060148 | 1972 | Geology and Geochemistry, Hoo Occurrence | Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology | ||
| 017746 | 1966 | Geochemical Soil Sampling Surveys Gun Mineral Claim Group | Soil - Geochemistry, Line Cutting - Other | ||
| 017580 | 1966 | Magnetic and Electromagnetic Geophysical Surveys, Gun Mineral Claim Group | Electromagnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Line Cutting - Other |
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| ARMC014099 | GX grid - Field copy - Geochemical results - R-74 - Grass Lakes | Miscellaneous Company Documents | |
| ARMC014094 | Airborne compilation - Grass Lakes area - Gun claims | Geophysical Map | |
| ARMC014098 | Ground EM - Grid GZ - Gun mineral claims - Grass Lakes area | Geophysical Map | |
| ARMC014095 | Ground mag contour - Grid GZ - Gun group - Grass Lakes area | Geophysical Map | |
| ARMC014093 | Geochemical soil survey data sheets - Grass Lakes - Gun claims | Miscellaneous Company Documents | |
| ARMC014092 | Analytical work sheets - Geochemical - Report No. R52-66 - Gun claims | Miscellaneous Company Documents | |
| ARMC014100 | Analytical work sheets - Geochemical - Report No. R74 - Grassy Lakes | Miscellaneous Company Documents | |
| ARMC014096 | Mag contours - Grid GZ - Gun group - Grass Lakes area | Geophysical Map | |
| ARMC014097 | Mag. values - Grid GZ - Gun group - Grass Lakes area | Geophysical Map |
| Citations |
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