The Chilko 9 occurrence is located on the north side of a ridge at an elevation of 2250 metres, approximately 6.5 kilometres east of Dorothy Lake.
The area is underlain by calc-alkaline volcanics and sedimentary rocks of the Lower Cretaceous Tchaikazan River succession. Quartz dioritic intrusive rocks of the Late Cretaceous Anvil Mountain suite outcrop to the north.
Locally a breccia zone hosts tetrahedrite, native copper and malachite mineralization with quartz-carbonate veining and pyrite in a bleached and altered volcanic. Samples were only assayed for gold, arsenic and mercury, yielding low values in gold with up 0.01 per cent mercury (Assessment Report 16079).
In 1986, Gunsteel Resources prospected and rock sampled the area as the Chilko 9-10 claims.