The Dominion showing lies within the Barkerville Terrane of the Omineca Belt. The Barkerville Terrane is in thrust contact with Triassic Quesnellia Terrane rocks to the west and Hadrynian to Lower Paleozoic Cariboo Terrane rocks to the east. The Barkerville Terrane in this region is underlain by the dominantly metasedimentary rocks of the Hadrynian to Lower Paleozoic Snowshoe Group. In this area the Snowshoe Group comprises limestone, phyllite and quartzite. These rocks have been regionally metamorphosed to greenschist facies.
The area of the occurrence is underlain by quartzite, conglomer- ate, limestone and chlorite schist. Adits that are primarily in a hard, massive, light-grey, quartz, pea-pebble conglomerate intersect- ed several quartz veins and stringers up to a width of about one metre. Pyrite mineralization occurs with some of the quartz veining and minor gold and silver values have been reported.