Abstract: The Wolf property is situated approximately 90 km south of Ross River, Yukon, within the St. Cyr Range of the Pelly Mountains. The Pelly Mountains are bounded to the northeast by the Tintina Fault, the northern extension of the Rocky Mountain Trench.

Mineralization consists of a tabular body of massive sulphide, commonly with subordinate amounts of ferro-dolomite, and more rarely, barite. Sulphide minerals consist of pyrite, sphalerite and galena. Textures vary from very fine-grained massive pyrite with bands of amber sphalerite and steely-gray galena (zebra ore), to medium-grained botryoidal sphalerite and galena within a gangue of buff-coloured Fe-Mg carbonate. Chalcopyrite is conspicuous by its absence. The deposit has been intersected by nine drill holes over a strike length of 500 metres and a down-dip length of 250 metres. Thickness of the sulphide deposit varies from 2, to more than 25 metres. The deposit and host stratigraphy strike northwesterly and dip at 45 degrees to the southwest.

The deposit is hosted by a sequence of high-K trachyte flows, lapilli and crystal tuffs with minor epivolcaniclastic rocks. Sulphide mineralization and/or massive barite occurs in at least three separate stratigraphic levels within a 300- to 1000-metre-thick pile of felsic volcanic rocks.

Authors: Holbek, P.M. and Wilson, R.G.

NTS Mapsheet(s): 105G05, 105G06

Citation: Holbek, P.M. and Wilson, R.G., 1998. The Wolf Discovery: A Kuroko-style volcanogenic massive sulphide deposit hosted by rift-related, alkaline felsic volcanic rocks. In: Yukon Exploration and Geology, 1997, Exploration & Geological Services Division, Yukon, Indian and Northern Affairs Canada, p. 115-120.

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