The Ursus showing is located in the upper drainage of an unnamed creek flowing west off Ursus Mountain.

The area is underlain by volcanics of the Upper Triassic Karmutsen Formation (Vancouver Group), which are intruded by granitic rock of the Jurassic Island Plutonic Suite. In the Bedwell River area, the Karmutsen rocks consist of fine-grained andesites and black or dark green basalts. The Jurassic plutonic rocks on Vancouver Island vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.

Locally, narrow quartz veins reportedly contain very high grade gold and silver mineralization (Property File: Wallace, 1970).