Skarn mineralization occurs along a limestone-andesite contact for a length of at least 460 metres. The area is mapped as Lower Jurassic Bonanza Group volcanics. The limestone, typically epidotized, may belong to the underlying Quatsino Formation or to beds that are known to occur in the upper part of the Karmutsen Formation; both formations belong to the Upper Triassic Vancouver Group. Argillite, slate and abundant skarn material occur as well.

Several drill holes were put down to examine the deposit in 1966. One hole cut 4.6 metres of massive pyrrhotite, pyrite and magnetite which assayed 0.54 per cent copper (Allan, 1966). Other drill holes intersected these sulphides, in disseminated or massive form, and also contained chalcopyrite. Samples of this material contained up to 17.8 grams per tonne silver and traces of gold. A composite chip sample was taken over the 15 metre length of an inclined shaft and this assayed 2.06 per cent copper, 1.3 per cent lead, 0.55 per cent zinc and traces of silver and gold (Allen, 1966).