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Copper Pass Deposit (BM; NIX; GOGO; Sachowia Lake), Great Slave Lake, Northwest Territories, Canada

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Latitude & Longitude (WGS84): 62° 24' 35'' North , 111° 51' 43'' West
Latitude & Longitude (decimal): 62.40972,-111.86194
Köppen climate type:Dfc : Subarctic climate

A minor past producer of nickel and bismuth, various attempts at exploration and mining date back to 1940.

"Mineralization occurs in fractures filled with quartz and carbonate within Archean metavolcanics and minor associated sediments of the Yellowknife Group and within granite dykes. Metallic minerals that have been reported are: niccolite, skutterudite, gersdorffite, rammelsbergite, annabergite, erythrite, arsenopyrite, native antimony, pyrite and chalcopyrite. The main zone, which occurs near the margin of a diabase dyke, is located across the SW limb of a conjugate fault system with the massive niccolite lens in a hanging-wall felsite-breccia along a minor NE striking fault."

"Mineralization appears to be associated particularly with bands of red granite which have been sheared and brecciated, and which have been veined or cemented by carbonate and lesser quartz. Niccolite, skutterudite, gersdorffite, rammelsbergite, arsenopyrite, pyrite and chalcopyrite occur in structurally controlled quartz-carbonate veins and vein breccias."

Mineral List

Mineral list contains entries from the region specified including sub-localities

12 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

2500 - 2800 Ma

ID: 657425
Igneous: extrusive; Extrusive: mafic

Age: Neoarchean (2500 - 2800 Ma)

Description: North America, Slave Craton

Comments: Craton and massif; Hoffman et al., 1993; Stubley, 2005; Tella et al., unpublished compilation, 2007-08a

Lithology: Mafic to intermediate volcanic flows, volcaniclastics, and related intrusions

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

2500 - 2800 Ma

ID: 3186128
Archean intrusive rocks

Age: Neoarchean (2500 - 2800 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

Localities in this Region

  • Northwest Territories
    • Great Slave Lake
      • Copper Pass Deposit (BM; NIX; GOGO; Sachowia Lake)

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Northwest Territories Geoscience Office Showing ID 075LSW0001 (http://ntgomap.nwtgeoscience.ca/showing_detail.jsp?showingID=075LSW0001)

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