The occurrence is located on the southern slope of Mill Hill, around 100 metres in elevation and approximately 1.5 kilometres north east of Langford.

The area is underlain by amphibolites derived from Paleozoic to Mesozoic metavolcanics (Wark Complex) are intruded by apophyses of Wark quartz diorite gneiss. Bodies of Permian and/or Triassic limestone are mapped in the area.

Locally, a shear zone, about 60 to 90 centimetres wide, hosts a small garnet-diopside-epidote skarn occurrence. The occurrence is about 45 centimetres wide and contains magnetite, pyrrhotite, pyrite and chalcopyrite. The amphibolites are intensely silicified and cut by quartz veinlets.