The Cawston showing is located within the southeastern corner of Cawston, British Columbia.
The Cawston showing lies within the Quesnel Terrane of the Intermontane tectonic belt. The Cawston showing is hosted along the western margin of a thick faulted package of Carboniferous to Permian Kobau Group. The showing is hosted in Quaternary unconsolidated glacial, fluvial and alluvial deposits along the Okanagan River.
Good quality rhodonite and talc are reported to have been found at the Cawston showing.