The claims are underlain by Middle to Upper Jurassic Bowser Lake Group sediments comprised of deformed argillite, limestone, and tuff which contact Cretaceous Kasalka Group massive rhyolitic to dacitic flows and tuff of the Brian Boru Formation. The argillite is cross cut by several rhyolitic and quartz porphyry dikes which follow shears in the host rock. Quartz veins are associated with the rhyolite dikes which strike east parallel to the shearing or slaty cleavage in the argillites.

The main showing consists of lenticular quartz veins which parallel the wall of the rhyolite dike, striking east and are parallel to the shearing in the argillite. The quartz varies from a thin streak to 1.5 metres in width. The quartz is barren in places while elsewhere is well mineralized with galena, sphalerite, tetra- hedrite and chalcopyrite. The sulphide content is erratic and in a second quartz zone mineralization consists of pyrite, galena, sphaler- ite, chalcopyrite and very minor tetrahedrite.

Between 1935 to 1940, 10 tonnes of ore was mined and produced 342 grams gold, 84,880 grams silver, 3,396 kilograms lead and 397 kilograms zinc.