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Yukon Geological Survey

YGS Publication Details


Reference Number
YEG2001_21
Title
Alteration zonation, veining and mineralization associated with the Wernecke Breccias at Slab Creek, Yukon Territory, Canada
Reference Type
Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division
Document Type
Annual Report Paper


General Information

Abstract: Detailed vertical-face mapping of 'Slab Creek' was carried out in the summer of 2001 to evaluate the relations of Wernecke Breccia bodies with alteration, veining and iron oxide-copper-gold mineralization. Slab Creek is situated near the 'Slab' mineral occurrence in the Bonnet Plume River district of the Wernecke Mountains. Meta-sedimentary rocks in the area consist of meta-siltstone, meta-silty dolomite and phyllite of the lower succession of the Early Proterozoic Wernecke Supergroup, known as the Fairchild Lake Group. These rocks were folded and metamorphosed to lower greenschist facies, and were subsequently intruded by the Wernecke Breccias during the Mid Proterozoic. Three alteration zones can be recognized within Slab Creek, an inner feldspar zone coinciding with the large breccia bodies, surrounded by a chlorite-quartz-carbonate zone, grading outward into a sericite-chlorite zone. Alteration, veining and mineralization is most intense within the albite alteration zone where iron oxide-copper-gold (cobalt-uranium) mineralization is disseminated and occurs as vein infill.
Authors: Brookes, M., Baker, T., and Hunt, J.
Keywords: bedrock mapping
NTS Mapsheet(s): 106C, 106D, 106E, 106F
Citation: Brookes, M., Baker, T., and Hunt, J., 2002. Alteration zonation, veining and mineralization associated with the Wernecke Breccias at Slab Creek, Yukon Territory, Canada. In: Yukon Exploration and Geology 2001, Emond, D.S., Weston, L.W., and Lewis, L.L. (eds.), Exploration and Geological Sciences Division, Yukon Region, Indian and Northern Affairs Canada, p. 249-258.

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NTS Mapsheet(s): 106C, 106D, 106E, 106F

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Related Publications

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YEG2001 Contained By Emond, D.S., Weston, L.W., and Lewis, L.L. (eds.) Yukon Exploration and Geology 2001