The area is underlain by a thick assemblage of andesites and basalts of the Jurassic Hazelton Group. The flows, which strike southeast and dip 50 to 60 degrees south, are intruded by small stocks and tongues of porphyritic granodiorite.

A vein, containing chalcocite, sphalerite, galena and bornite, occurs along the contact of two andesite flows. The vein is about 15 metres long and averages 0.5 metres wide. A 0.5 metre sample assayed trace gold, 480 grams per tonne silver, 6 per cent copper, 2 per cent lead and 8 per cent zinc (Minister of Mines Annual Report 1928).

About 300 metres to the east a quartz vein in a shear zone trends 100 degrees for about 300 metres and dips 55 degrees north. The vein averages 1 metre wide and a typical sample assayed 0.7 grams per tonne gold, 90 grams per tonne silver and 2.94 per cent copper (Geological Survey of Canada Memoir 212).