General Information
Secondary Commodities: tin
Deposit Type(s): Vein and Greisens Sn
Location(s): 60.212020 N, -131.641740 W
NTS Mapsheet(s): 105B04
Location Comments: Based on location of rock sample 67614 (AR 090778)
Hand Samples Available at YGS: No
Capsule
Work History
Staked as part of a large block of DU claims (1-239, YA28903) between June and Jul/78 by the Klinkit Joint Venture (DuPont of Canada Exploration Limited & Duval International Corporation), which explored with detailed geological mapping and soil sampling to the west in 1978 and soil sampling in 1979.
The DC Syndicate (Dome Mines Limited & Cominco Limited) tied on Zinc cl 1-16 (YA33021) to the west in Jun/78. In 1981, rock sampling at the occurrence and a ground magnetic survey and grid soil survey west of the occurrence were carried out. In 2006, the Seagull claims were staked over the occurrence and rock sampling was carried out. In 2012, widespread rock sampling across the Seagull Batholith took place, although none were taken at the occurrence. In 2014, an airborne magnetic and radiometric survey covered almost the entire Seagull Batholith. In 2018, the area was restaked as the JC 1-101 claims and an airborne magnetic and radiometric survey was flown over the property.
Capsule Geology
This occurrence lies within a belt of Yukon-Tanana Terrane rocks. This belt of rocks is part of an accreted island arc assemblage consisting of biomodal volcanics, coeval plutons and sedimentary rocks, as well as younger Jurassic intrusive rocks and overlap assemblages and Cretaceous intrusions. The occurrence is hosted in mid-Cretaceous Seagull Batholith quartz monzonite.
The occurrence is located along a rock sampling traverse line at the north end of “Gem Lake”. In 1981, chip sampling was undertaken on manganese-stained fracture zones in the quartz monzonite. The zones contain quartz and tourmaline, fluorite(?) and small amounts of pyrite, sphalerite, galena and arsenopyrite. The best value was sample 67614, which assayed >1000 ppm Sn over 0.9 m. In 2006, sampling of quartz veins in granite in the area did not uncover anomalous values, but soil sampling confirmed a historic tin-in-soil anomaly. Grid soil sampling in 2006 outlined an approximately 900 m x 900 m area as defined by a 20 ppm Sn threshold. Almost half the samples assayed greater than 100 ppm Sn and the anomaly is open in all directions.
Soil sampling in the area in 1979 gave very high values for Sn, but these values were determined using a portable XRF analyzer, and were later deemed unreliable.
Staked as part of a large block of DU claims (1-239, YA28903) between June and Jul/78 by the Klinkit Joint Venture (DuPont of Canada Exploration Limited & Duval International Corporation), which explored with detailed geological mapping and soil sampling to the west in 1978 and soil sampling in 1979.
The DC Syndicate (Dome Mines Limited & Cominco Limited) tied on Zinc cl 1-16 (YA33021) to the west in Jun/78. In 1981, rock sampling at the occurrence and a ground magnetic survey and grid soil survey west of the occurrence were carried out. In 2006, the Seagull claims were staked over the occurrence and rock sampling was carried out. In 2012, widespread rock sampling across the Seagull Batholith took place, although none were taken at the occurrence. In 2014, an airborne magnetic and radiometric survey covered almost the entire Seagull Batholith. In 2018, the area was restaked as the JC 1-101 claims and an airborne magnetic and radiometric survey was flown over the property.
Capsule Geology
This occurrence lies within a belt of Yukon-Tanana Terrane rocks. This belt of rocks is part of an accreted island arc assemblage consisting of biomodal volcanics, coeval plutons and sedimentary rocks, as well as younger Jurassic intrusive rocks and overlap assemblages and Cretaceous intrusions. The occurrence is hosted in mid-Cretaceous Seagull Batholith quartz monzonite.
The occurrence is located along a rock sampling traverse line at the north end of “Gem Lake”. In 1981, chip sampling was undertaken on manganese-stained fracture zones in the quartz monzonite. The zones contain quartz and tourmaline, fluorite(?) and small amounts of pyrite, sphalerite, galena and arsenopyrite. The best value was sample 67614, which assayed >1000 ppm Sn over 0.9 m. In 2006, sampling of quartz veins in granite in the area did not uncover anomalous values, but soil sampling confirmed a historic tin-in-soil anomaly. Grid soil sampling in 2006 outlined an approximately 900 m x 900 m area as defined by a 20 ppm Sn threshold. Almost half the samples assayed greater than 100 ppm Sn and the anomaly is open in all directions.
Soil sampling in the area in 1979 gave very high values for Sn, but these values were determined using a portable XRF analyzer, and were later deemed unreliable.
Location Map
Last Updated: Jun 4, 2020
Work History
| Year | Work Type | Comment |
|---|---|---|
| 2018 | Airborne Geophysics: Magnetic | |
| 2018 | Airborne Geophysics: Radiometric | |
| 2014 | Airborne Geophysics: Magnetic | |
| 2014 | Airborne Geophysics: Radiometric | |
| 2006 | Geochemistry: Rock | |
| 1981 | Geochemistry: Rock | |
| 1981 | Geochemistry: Soil | Grid soils west of the occurrence |
| 1981 | Ground Geophysics: Magnetics | west of the occurrence |
| 1979 | Geochemistry: Soil | |
| 1978 | Geochemistry: Soil | soil sampling to the west |
| 1978 | Geology: Bedrock Mapping | mapping to the west |
| 1978 | Other | staked |
Regional Geology - Terrane
Group:
Affinity:
Name:
Realm:
Regional Geology - Bedrock
Supergroup:
Group/Suite:
Formation:
Member:
Terrane:
Period Max:
Age Max: MA
Period Min:
Age Min: MA
Rock Major:
Rock Minor:
Reference:
Geological Unit (1M):
Geological Unit (250K):
Related References
| Number | Title | Page(s) | Document Type |
|---|---|---|---|
| 2004-2 | Bedrock Geology, Dorsey Lake (NTS 105B/4), southern Yukon (1:50,000 scale) | Open File (Geological - Bedrock) | |
| YEG1999_11 | Wolf Lake project: Revision mapping of Dorsey Terrane assemblages in the upper Swift River area, southern Yukon and northern B.C. | Annual Report Paper |
| Citations |
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