The Zinc Creek showing area is largely underlain by sedimentary rocks of the Middle Jurassic Smithers Formation, Hazelton Group. Quartz dioritic stocks, dikes and plugs of the Late Cretaceous Bulkley Plutonic Suite and Eocene felsitic intrusive rocks intrude the volcanics.

This showing comprises a set of narrow quartz-chalcopyrite-galena-tetrahedrite veins containing up to 2674.31 grams per tonne silver; a 20 centimetre wide quartz-carbonate vein assayed in excess of 34 grams per tonne gold (Assessment Report 17654). An argillic altered fracture zone within Jurassic sediments gave a grab of 2.2 grams per tonne gold in 1986. Zones of pale reddish sphalerite cementing fractured shale gave the creek and the showing area its name.

Refer to Cummins Creek Veins prospect (093E 100) for common details of area work history.