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Occurrence Details


Occurrence Number
115I 069
Occurrence Name
Schist
Occurrence Type
Hard-rock
Status
Anomaly


General Information

Secondary Commodities: asbestos, nickel, copper
Deposit Type(s): Ultramafic Mafic Gabbroid Cu-Ni-PGE
Location(s): 62.0650 N, -137.6840 W
NTS Mapsheet(s): 115I04
Location Comments: Location from AR096640
Hand Samples Available at YGS: No

Capsule

Work History

Staked as the Schist cl (Y20593) in Aug/67 by the Aishihik Syndicate (Mt Washington Copper CL, Granite City Platinum L, Coin Canyon ML and Tay River ML. Tay River was controlled by Utica ML, Silver Standard ML and Copper Ridge ML). Restaked as Bug cl (Y5O992) in Mar/70 by Largo ML, which conducted mapping and reconnaissance geochem.

Since 2010, this area has received geological mapping, rock and soil geochemical sampling, hand pitting, magnetic and radiometric surveying, and excavator trenching.

Capsule Geology

The Schist occurrence is located within the Yukon-Tanana Terrane. The YTT represents a continental arc that developed along the ancient pacific margin of North America from Late Devonian to Permian. The area is underlain by the Snowcap assemblage metasedimentary rocks that are cut by splay faults and porphyry dykes.

In the Schist area, two epithermal, vein and breccia zones were exposed during excavator trenching, the vein exposures comprise locally drusy, white to dark grey quartz with subtle banding. The breccia is monolithic with sericite-altered green to grey clasts of an unknown protolith. The veins, breccias and hydrothermally-altered metamorphic rocks host gold, silver and arsenic mineralization.

Some of the anomalous rock sampling results include:
- I357278: 1.13 g/t gold, 1.1 g/t silver, 2390 ppm arsenic and 27 ppm antimony
- I357174: 0873 g/t gold, 9.8 g/t silver, 1965 ppm arsenic and 53 ppm antimony
- I357181: 2.78 g/t gold, 25.7 g/t silver, 955 arsenic and 51 ppm antimony
- I357267: 6.29 g/t gold, 7.6 g/t silver, 3110 ppm arsenic and 26 ppm antimony
(AR 096765)


 

Location Map

Last Updated: Oct 22, 2019

Work History

Year Work Type Comment
2018 Geochemistry: Silt
2018 Geochemistry: Soil
2011 Geochemistry: Rock
2011 Geochemistry: Silt
2011 Geochemistry: Soil
2011 Geology: Bedrock Mapping
2010 Geochemistry: Silt
2010 Geochemistry: Soil
2010 Ground Geophysics: Magnetics
2010 Ground Geophysics: Radiometric Survey
1970 Geology: Bedrock Mapping
1970 Other
1970 Other
1967 Other

Regional Geology - Terrane

Group: Intermontane
Affinity: W Laurentia
Name: Yukon-Tanana
Realm: peri-Laurentian


Regional Geology - Bedrock

Supergroup:
Group/Suite: Snowcap
Formation:
Member:
Terrane: Yukon-Tanana
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Devonian
Age Min: 375 MA
Rock Major: bi-ms-qt-fp-schist/gt-quartzite/cl-bi-orthogneiss
Rock Minor: bt-ms-gneiss/amphibolite
Reference: Tempelman-Kluit (1974) - GSC Map 16-1973
Geological Unit (1M): PDS
Geological Unit (250K): PDS1

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
097260 2018 Assessment Report describing Prospecting and Geochemical Sampling on the CD Property Rock - Geochemistry, Soil - Geochemistry
095809 2011 Assessment Report Describing Geochemical Sampling, Geological Mapping and Excavator Trenching at the DDD Property Rock - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Regional Bedrock Mapping - Geology, Prospecting - Other, Backhoe - Trenching
095493 2010 Assessment Report Describing Geochemical Sampling and Geophysical Surveys at the DDD Property Gamma-Ray Spectrometry - Airborne Geophysics, Gamma-Ray Spectrometry - Airborne Geophysics, Magnetic - Airborne Geophysics, Magnetic - Airborne Geophysics, Silt - Geochemistry, Silt - Geochemistry, Soil - Geochemistry, Soil - Geochemistry

Related References

Number Title Page(s) Document Type
ARMC012913 Geology map of Schist Creek area - 115-I-4 Geoscience Map (Geological - Bedrock)
ARMC012912 Air photo overlays with silt sample notes - 115I/03, 115I/04, 115I/05 - Air photos no. A11069-100, A11539-366, A11522-239, A11539-365, A11539-375, A11522-227, A11539-376, A11523-226, A11539-374, A11539-363, A13476-78, A13517-323, A11539-361, A11522-244, A13476-79, A13517-324, A11069-27, A11069-100, A11069-98, A11531-42 Geoscience Map (General)
Citations
AR 095493, Wolverine Minerals Corp./ Strategic Metals Ltd., by C.J. Chung, Oct/2011
AR 095809, Wolverine Minerals Corp./ Strategic Metals Ltd., by H. Smith, Apr/2012
AR 097260, Strategic Metals Ltd., by J. Morton, Mar/19

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