In the Cahilty 7 showing area, folded and faulted metasediments of the lower Paleozoic Tsalkom Formation (Mount Ida Group) are intruded by Cretaceous? quartz monzonite.

A number of very sparsely mineralized quartz veins cut pyritic quartz monzonite. The quartz veins are subparallel, striking 080 degrees and dipping 70 degrees south. Several of the exposed veins contain minor galena and are up to 60 centimetres wide. In the vicinity of the veins, there is a minute amount of chalcopyrite evident in tiny fractures.