The area is underlain by Nisling Terrane undivided metamorphic schists and gneisses. These are locally unconformably covered by Sloko Group volcanics (primarily Opposer Formation flows and tuffs) and intruded by Cretaceous to Tertiary granodiorite, quartz-diorite and lesser monzonite.

Pyrite, chalcopyrite and molybdenite mineralization is found disseminated in essentially unaltered granodiorite. Mineralized samples were collected from talus on the glacier which is assumed just below the occurrence location. Steep terrain restricted any further investigation.