The S.S. occurrence is located on the western side of Mount Hankin.

The area is underlain by pillow lava of the Upper Triassic Karmutsen Formation, Vancouver Group. Feldspar porphyry dykes and altered volcanics are reported nearby. The area to the east is underlain by diorite of the Jurassic Island Intrusions.

An old tunnel was driven on an outcropping of chalcopyrite on the west side of Hankin Mountain, about half way up. A high-grade zone is reported to contain up to 15 per cent copper ore.

In the mid 1960’s, the area was explored by Gunnex Limited.