The region is underlain by sedimentary and volcanic rocks of the Upper Triassic to Lower Jurassic Nicola Group of the Central Quesnel belt. The Nicola Group has been intruded by felsic alkalic stocks of Lower Jurassic age and, along the east side of the Quesnel River, by a calc-alkalic pluton of probable Cretaceous age. This pluton consists of quartz monzonite with dioritic and granodioritic phases cut by fine grained granite and porphyritic granite dikes. Hydrothermal alteration of the pluton has occurred, evidenced by the presence of epidote, chlorite, quartz, biotite and carbonate along with quartz and quartz-ankerite veining. In some places these veins contain tetrahedrite, chalcopyrite, pyrite, malachite and azurite.

Quartz-ankerite veins also occur within the country rock intrud- ed by the pluton. In the vicinity of the showing, rocks of the Nicola Group are very poorly exposed, being mainly covered by a thick accumulation of glacial gravels. A chip sample taken in 1986 across 1.5 metres of a quartz-ankerite vein in sheared porphyritic basalt yielded 3.3 per cent copper, 0.02 per cent lead, 0.45 per cent zinc, 435 grams per tonne silver and 0.65 grams per tonne gold (Assessment Report 15130). Recent mapping indicates that the property is underlain almost entirely by rocks of the plutonic com- plex. Therefore, it is not certain whether the basalt sampled was that of the Nicola Group, the overlying Miocene plateau basalt, or a pendant within the pluton.