The Cap occurrence is located near the east bank of Capoose Creek, approximately 3 kilometres south-southeast of the creekâs junction with the Entiako River.
The region in which the Cap showing occurs is within the Intermontane Belt, underlain dominantly by Lower to Middle Jurassic volcanic and sedimentary rocks of the Hazelton Group. These assemblages are overlain by the Upper Cretaceous to Lower Tertiary Ootsa Lake Group and Miocene plateau basalt. Intruding Lower Jurassic rocks of the Hazelton Group in the northeastern part of the map sheet is a belt of granodiorite, diorite, and quartz diorite plutons of the Lower Jurassic Topley intrusive suite. Felsic plutons of probable Cretaceous age intrude both Lower and Middle Jurassic Hazelton strata.
The Cap showing is underlain by one of these plutons of probable Cretaceous age. Sulphide mineralization comprises chalcopyrite, molybdenite, covellite and pyrite along with malachite, along fracture planes cutting granodiorite and quartz monzonite. East trending dikes of probable Tertiary age occur proximal to mineralized fractures and may be associated with the mineralization.
Work History
In 1969, American Smelting and Refining Co. completed a program of silt and soil sampling on the area as the Cap claims.
In 1970, Rio Tinto Canadian Exploration Ltd. completed a soil sampling program, geological mapping, a 20.8 line-kilometre ground magnetic survey and a 46.8 line-kilometres induced polarization survey on the area immediately northeast as the Cap claim group. The following year, an induced polarization survey was completed on the Cap and T claim groups.
