The area is underlain by strongly foliated and lineated meta- sedimentary gneiss, schist, calc-silicate, amphibolite and marble of the Shuswap Metamorphic Complex. Foliation and bedding attitudes commonly trend 140 to 180 degrees and dip steeply east. These rocks are intruded by dykes and sills of pegmatite.

Stratiform lead-zinc mineralization is conformable and continuous over a 20 kilometre strike length. Rocks often associated with the mineralization include biotite gneiss, calc-silicate and marble. Sulphide mineralization includes sphalerite, pyrrhotite and minor galena. Gangue minerals include quartz and plagioclase and minor fluorite, augite, diopside, calcite and sphene.