The Hey-Bert showing is located to the west of Moriarty Creek, approximately 25 kilometres south east of Port Alberni.
The area is underlain by Upper Triassic Karmutsen Formation (Vancouver Group) volcanic and volcaniclastic rocks intruded by Jurassic Island Plutonic Suite granodiorite to quartz monzonite. Unconformably overlying these rocks are Cretaceous Nanaimo Group bedded conglomerates, greywackes and sandstones.
The Hey-Bert occurrence comprises Karmutsen Formation massive basalt, feldspar porphyry basalt, basalt flow breccia and basalt tuffs intruded by granodiorite and quartz monzonite of the Island Plutonic Suite. The quartz monzonite rocks contain sporadic zones of intense shearing and/or fracturing with associated potassic (potassium feldspar) or carbonate alteration. An alteration assemblage of quartz, epidote and chlorite occurs primarily in the Karmutsen rocks as fracture-fillings, veinlets or veins. Mineralization consisting of pyrite with trace chalcopyrite are associated with shear/fracture zones and alteration zones in granodiorite and quartz monzonite, with strong linear shears in feldspar porphyry basalt and as pervasive disseminations in altered basalt. A rock sample from sheared granodiorite assayed 0.07 per cent copper (Assessment Report 11356).