The BJ showing is located near the eastern margin of the Stikinia Terrane near McLeese Lake in south central British Columbia. The dominant rock types in the region are metabasalt, limestone and argillaceous metasediments of the Mississippian to Triassic Cache Creek Group. These are intruded by the dioritic to quartz dioritic Granite Mountain Pluton and the (?)Cretaceous Sheridan Creek Pluton.

The BJ showing is located south of the Granite Mountain Pluton underlain by a small quartz diorite stock which has intruded the Cache Creek Group. Sporadic mineralization of pyrite and chalco- pyrite occurs in a quartz stockwork developed in the stock.