The property area covers a conformable contact between the Weaver Lake Member comprised mainly of pyroclastics, and the Echo Island Member consisting of tuff, minor agglomerate, sandstone and pelite. Further to the north, both the Weaver Lake and Echo Island members of the Lower-Middle Jurassic Harrison Lake Formation are overlain by Middle-Upper Jurassic pelites, black shale, siltstone and sandstone of the Mysterious Creek Formation.

On the KU property, disseminated pyrite and pyrrhotite averaging less than 3 per cent, is disseminated throughout the Weaver Lake Member pyroclastics. Rhyolite tuffs are pyritized and contain greater than 5 per cent pyrite and host bright orange gossans. In 1974, small disseminated fragments of sphalerite were found in a light brown rhyolite unit. Drilling in 1977 intersected fracture controlled chalcopyrite and sphalerite in carbonate (calcite) veinlets hosted by rhyolite breccia and rhyolitic to dacitic tuffs.

A chip sample taken across the light brown pyritic rhyolite assayed 1.6 grams per tonne silver, 0.11 per cent zinc, 0.02 per cent lead and 0.041 per cent copper (Assessment Report 5322).