The Grizzly showing is located about 3 kilometres east of the Alberni Inlet and 7 kilometres southeast of Port Alberni.

The area is underlain by Haslam Formation sediments of the Cretaceous Nanaimo Group which are intruded by granite porphyry of the Tertiary Mount Washington Intrusive Suite (formerly known as the Catface Intrusions) (Personal Communication - N. Massey, May 1990).

A vein of calcite, striking 75 degrees and dipping vertically, and quartz stringers occur in 60 degree striking, vertically dipping argillites and shales. These are mineralized with disseminations and stringers of arsenopyrite, pyrite and nodules of native arsenic. The vein, which is 30 to 60 centimetres wide, 4.6 metres deep and about 9 metres long, follows a fracture zone 1.2 to 1.5 metres wide. A 30 centimetre sample across the vein assayed 10.6 per cent arsenic and 6.9 grams per tonne silver (Minister of Mines Annual Report 1924). A 60 centimetre sample over the main vein assayed 5.97 per cent arsenic and 0.34 grams per tonne gold (Laanela, 1965).

High-grade ore and arsenic specimens are reported to have been removed from the site.