Abstract: The Brewery Creek mine is a bulk tonnage gold deposit located 57 km east of Dawson City, in central Yukon, within the foothills of the Ogilvie Mountains along the northeastern boundary of the Tintina Trench. High-level fracture-controlled gold mineralization is hosted within Cretaceous monzonite sills and Devonian Earn Group siliciclastic rocks of the Selwyn Basin. Structural controls include northeast and southeast sub-vertical shears bounded by moderately south-dipping, southeasterly-extending listric normal faults; listric faulting and sill emplacements are localized along pre-existing graphitic thrust faults. Gold occurs as sub-micron particles in solid solution with pyrite and arsenopyrite as growth bands around larger sulphide grains that are disseminated within fine quartz veinlets. The open-pit heap leach operation produces 75,000 - 80,000 ounces annually, with a stripping ratio of 1.5:1 and a cash cost of US$200/oz or less. The mineable reserves at the end of 1997 stood at 13.3 MT @ 1.44 gpt (613,000 oz).

Authors: Diment, R. and Craig, S.

Keywords: deposit models, Structural controls

NTS Mapsheet(s): 105I

Citation: Diment, R. and Craig, S., 1999. Brewery Creek gold deposit, central Yukon. In: Yukon Exploration and Geology 1998, Roots, C.F. and Emond, D.S (eds.), Indian Exploration and Geological Sciences Division, Yukon Region, Indian and Northern Affairs Canada, p. 225-230.

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