The area is underlain by metavolcanic and metasedimentary rocks of the Upper Jurassic Bowser Lake Group. The volcanic rocks consist of dacitic crystal tuffs, andesites and basalts, which are metamorphosed to muscovite schists, biotite-chlorite schists, and gneisses. The units strike east and dip 25 to 35 degrees north and have undergone varying degrees of sericite, epidote and chlorite alteration.

Bornite and chalcopyrite with low gold and silver values occur locally in narrow shear zones in quartz stringers; in quartz-epidote-hematite lenses and veins; in magnetite-rich, partly silicified tuff bands; and along planes of schistosity in the biotite-chlorite schists.

Three showings (Shaft, South Adit and Road) occur over a 240 metre, north trending zone. The Shaft occurrence contains malachite along shear zones in metabasalt, which overlies muscovite schist. A 2.4 metre sample assayed 14.4 grams per tonne gold and 17.1 grams per tonne silver (Minister of Mines Annual Report 1914). The South Adit occurrence, 110 metres southeast of the shaft, showed strata- bound mineralization with magnetite. A grab sample assayed 0.78 per cent copper, 0.3 grams per tonne gold and 14 grams per tonne silver (Fieldwork 1984). The recent Road showing, 85 metres south-south- east of the adit, is mineralized with bornite, specularite and chalco- pyrite. A grab sample assayed 4.80 per cent copper, 4.1 grams per tonne gold and 100 grams per tonne silver (Fieldwork 1984).

The Christmas vein, 600 metres south of the North adit, contains quartz, magnetite, pyrite and chalcopyrite. A one metre length of drill core assayed 1.18 grams per tonne gold, 1.19 grams per tonne silver and 0.05 per cent copper (Assessment Report 16158).