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Occurrence Details


Occurrence Number
116B 206
Occurrence Name
Top Exhalite
Occurrence Type
Hard-rock
Status
Showing


General Information

Primary Commodities: barium, copper, zinc, lead, manganese
Deposit Type(s): Volcanogenic Sulphide - type not determined
Location(s): 64.1690 N, -139.81 W
NTS Mapsheet(s): 116B04
Location Comments: Location from AR 097555
Hand Samples Available at YGS: No

Capsule

Exploration History

In 1996, Nordac Resources Ltd. staked the Top 1-20 claims and carried out a short prospecting and soil sampling program (Carne, 1996). That same year Cominco Ltd. staked the Floc claims to the southeast and preformed helicopter-borne magnetic and electromagnetic surveys, prospecting and contour soil and silt sampling. Work by Cominco geologists on the Floc claims identified mineralization in bedrock that reportedly assayed 0.14% copper, 1.7% lead, 0.71% zinc and 65 g/t silver over 30 cm (Pride, 1996).

In 1997, Nordac conducted excavator trenching, prospecting, geological mapping and soil sampling on the Top claims (Carne, 1999).

In 1998, Nordac completed three excavator trenches, exposing a barium, manganese and base metal enriched horizon (Carne, 1999).

In 1999, Nordac formed the Eureka Joint Venture with Expatriate Resources Ltd. and the Joint Venture assumed ownership of the Top property.

In 2003, Expatriate Resources transferred its interest in the property to StrataGold Corporation. Nordac was subsequently re-organized into Strategic Metals Ltd.

In 2007, the Eureka Joint Venture (Strategic and StrataGold) conducted helicopter-borne, VTEM and magnetometer surveys on the property.

In 2011, Strategic completed six reverse-circulation drill holes, totalling 419.76 m (Smith and Avram, 2012).

In 2013, Strategic performed geochemical sampling, prospecting and geological mapping on the property.

In 2015, Strategic staked additional claims contiguously to the southeast of the property in the area of the Floc Showing and conducted soil geochemical sampling and prospecting.

Capsule Geology

The Top property is underlain by Proterozoic to Paleozoic age siliciclastic and arc-related volcanic, magmatic and sedimentary rocks belonging to Yukon-Tanana terrane (YTT). In the region around the Top property, Yukon-Tanana consists of deformed and metamorphosed Devonian to Mississippian volcanic and sedimentary rocks of the Finlayson assemblage and Permian schists of the Klondike assemblage. Fault bounded slivers of Carboniferous to Permian mafic volcanic and marine sedimentary rocks of the Slide Mountain terrane are found interleaved with YTT rocks throughout the area (Nelson et al., 2013).

The Top property is predominately underlain by a sequence of metavolcanic and lesser metasedimentary rocks consisting of muscovite and/or chlorite quartzite, quartz-muscovite-chlorite schist, quartz and/or feldspar augen-bearing quartz-muscovite ±chlorite schist, augen gneiss and amphibolite of the Klondike schist. Compositional layering in the metamorphic rocks on the property is subparallel to foliation. The foliation dips gently to the south on a regional scale but undulates locally on the property. In the southeastern portion of the property, a small stock of unfoliated quartz-feldspar porphyry and a coarse-grained chlorite-altered felsic dyke intrudes the Klondike schist.

The Top Exhalite occurrence is a 70 cm thick, iron oxide-rich, barium, manganese and base metal enriched horizon. A chip sample collected across this horizon returned 250 ppm copper, 1980 ppm lead, 2830 ppm zinc, 4490 ppm manganese and 2190 ppm barium over 1.4 m (Carne, 1999). The metalliferous horizon is overlain by siliceous graphitic phyllite and a thin iron oxide-rich band.

Location Map

Last Updated: Jul 11, 2022

Work History

Year Work Type Comment
2013 Geochemistry: Rock
2013 Geochemistry: Soil
2013 Geology: Detailed Bedrock Mapping
2013 Other: Prospecting
2011 Drilling: Reverse Circulation 6 holes, 419.76 m
2011 Geochemistry: Drill Cuttings
2007 Airborne Geophysics: VTEM
1998 Development, Surface: Reclamation
1998 Geochemistry: Rock
1998 Geology: Detailed Bedrock Mapping
1998 Trenching: Backhoe
1997 Geochemistry: Rock
1997 Geochemistry: Soil
1997 Geology: Detailed Bedrock Mapping
1997 Other: Prospecting
1997 Trenching: Backhoe
1997 Trenching: Mechanical
1995 Geochemistry: Soil
1995 Other: Prospecting

Regional Geology - Terrane

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Regional Geology - Bedrock

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Related References

Number Title Page(s) Document Type
Citations
Nelson, J. and Colpron, M., 2007. Tectonics and Metallogeny of the British Columbia, Yukon and Alaskan Cordillera, 1.9 Ga to present, in Goodfellow, W.D., ed., Mineral Deposits of Canada: A Synthesis of Major Deposit-Types, District Metallogeny, the Evolution of Geological Provinces, and Exploration Methods: Geological Association of Canada, Mineral Deposits Division, Special Publication No. 5, p. 755-791.

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