The area is underlain by metasedimentary schists and gneisses of the Shuswap Metamorphic Complex, intruded by granitic dykes and sills and pegmatites. The metasediments vary from quartz-mica schist to biotite gneiss. Locally, limestone and marble occur and are generally altered, developing wollastonite, fluorite and garnet minerals. All rocks are cut by fracture related andesite porphyry dykes with a general strike of 010 degrees and dip of 70 to 75 degrees west.

The general strike is 050 degrees and the dip is between 20 to 45 degrees to the northwest. Folding and faulting are minor in the area.

Sulphide mineralization occurs in three main zones over an east- northeast strike length of 1100 metres. Mineralization is a replace- ment of pyrrhotite, sphalerite, galena, pyrite and chalcopyrite along bedding planes and pre-existing fractures in quartz-biotite gneiss. The sulphides occur as discontinuous lenses, lacking continuity in thickness and strike length.

The East Zone strikes east-west for 230 metres and a down dip distance of 200 metres with an average width of 2.1 metres to a maximum of 4.9 metres. In several places the zone is cut by post mineralization dykes and faults with displacements up to 15 metres south. A 3 metre sample of the outcrop assayed 6.67 per cent zinc, 4.13 per cent lead, 0.76 per cent copper and 87.8 grams per tonne silver (Assessment Report 2107).

The Ady vein, or Central Zone lies 500 metres west of the East Zone. It is exposed along surface for 18 metres and by drilling for 38 metres. A sample of the outcrop returned 10.0 per cent zinc, 5.0 per cent lead, 0.9 per cent copper and 99.4 grams per tonne silver (Annual Report 1956).

The west vein, 600 metres west-southwest of the Ady vein, is exposed on surface for a few metres. A sample assayed 3.73 per cent zinc, 1.29 per cent lead, 0.48 per cent copper and 31.5 grams per tonne silver (Assessment Report 4386).

The East Zone is the largest zone with indicated reserves totalling 244,000 tonnes, having an average width of 2.2 metres and an average grade of 4.5 per cent zinc, 1.0 per cent lead, 0.7 per cent copper and 27.4 grams per tonne silver (Annual Report 1956). This is assumming the zone to be continuous.