Volcanic rocks of the Middle Triassic to Lower Jurassic Takla Group consisting of dacitic tuffs and augite porphyry flows are overlain by a sedimentary package containing argillite, chert, and volcanic greywacke. The volcanics are assumed to part of the informal Upper Triassic Witch Lake Formation (Takla Group) (Nelson et al., Fieldwork 1990 and 1991).
A narrow (1 centimetre wide) galena-pyrite-quartz-ankerite vein crosscuts cherty tuffs near a contact with augite porphyry flows. A grab sample of vein material yielded 16.1 grams per tonne gold, 265 grams per tonne silver, 0.19 per cent arsenic and 0.027 per cent copper (Assessment Report 13509, page 3).
For full work history see the Nighthawk (MINFILE 093N 091) or Gibson (MINFILE 093N 185) occurrences.