The area lies within the Shuswap Metamorphic Complex along the eastern margin of the Frenchman Cap Dome. The core of the dome is mantled by an unconformably overlying succession of meta- sedimentary rocks consisting of calc-silicate gneiss, quartzite, hornblende gneiss and marble.

Massive and disseminated galena, sphalerite, pyrrhotite and pyrite occur as small bands within muscovite schist adjacent to biotite schist and marble.