The Sky 5 (Breccia-Bx 1) occurrence is located at an elevation of approximately 1500 metres on a steep southeast-facing slope and approximately 600 metres north of the north end of Blue Sheep Lake.

The area is underlain by south-dipping carbonate of the Lower Cambrian Atan Group, which are overlain by phyllites of the Cambrian to Ordovician Kechika Group. The strata are intruded by a small Cretaceous(?) quartz-feldspar porphyry stock and associate dikes and sills. Intrusion of the stock has produced a doming of the sediments and an extensive zone of hornfels within the phyllites. Low sulphide garnet-diopside skarn and overlying cherty, light-green to brown hornfels are exposed at the dolomite-phyllite contact immediately west of the stock.

Locally, a brecciated and altered dolomite associated with fine-grained felsic dikes and sills hosts disseminated galena, sphalerite and pyrite. Later work, in 1996, describes galena, pyrite, sphalerite mineralization occurring as replacements of carbonate-altered lamprophyre dikes.

In 1981, a rock chip sample (81HT26) assayed 0.30 per cent lead, 0.88 per cent zinc and 14.2 grams per tonne silver (Assessment Report 9661).

In 1996, a rock talus sample (BS-012) assayed 0.46 per cent lead, 0.27 per cent zinc, 0.10 per cent nickel and 10.9 grams per tonne silver (Assessment Report 24764).

Work History

The area has been explored in conjunction with the nearby Johnny (MINFILE 104I 040) occurrence and a complete exploration history can be found there.