The Copper Creek showing is located 7.5 kilometres east of the town of Alice Arm on the Illiance River. The showing was explored by trenching in 1921.

The region is underlain by an assemblage of volcanic and sedimentary rocks of the Upper Triassic Stuhini Group, the Lower Jurassic Hazelton Group and the Middle Jurassic to Upper Cretaceous Bowser Lake Group. The sequence has been folded into a north-northwest trending anticline (Mount McGuire anticline) and has been regionally metamorphosed to greenschist facies.

The showing comprises a zone of black cherty quartz veins, up to 1.5 metres wide, developed adjacent to a dioritic dike in Stuhini Group argillite. The quartz veins contain stringers of galena and pyrite. A selected grab sample from the dump of a trench assayed trace gold, 21 grams per tonne silver and 6.5 per cent lead (Minister of Mines Annual Report 1921, page 54).