The claims are reportedly underlain by Eocene Francois Lake Group, Buck Creek Formation basalts which are thought to be part of the Swan Lake phase. Recent mapping indicates that these amygdaloidal basalts and vesicular basalts with interbedded andesitic to rhyolitic flows are correlative with the Jurassic Hazelton Group (Bulletin 78, Figure 1).

The volcanics are intruded by a Tertiary Bulkley Intrusion com- prised of gabbro which is strongly magnetic and hosts disseminated pyrite. Associated quartz and quartz-carbonate veins crosscut the volcanics.

The showing consists of mineralized infilling in a fault in the basalt. Vein materials are minor chalcopyrite, pyrite and quartz.