Flows and tuffs of the Jurassic Hazelton Group underlie the area of the occurrence. The flows are mainly porphyritic, amygda- loidal andesites, while the tuffs occur in both massive and well- bedded forms. Mineralization appears to have been affected by both structural and stratigraphic controls. Copper-silver mineralization occurs over 60 metres along two parallel fault zones. The main zone consists of fracture fillings and veinlets of chalcocite and bornite in chloritized andesite over a zone 0.3 metres wide, which is exposed for about 6 metres. A chip sample across 20 centimetres gave 37 grams per tonne silver and 0.87 per cent copper (Assessment Report 4671). Another zone contains narrow chalcopyrite and chalcocite veins associated with a 0.6 metre wide fault zone.