The Bethlehem Copper-Spud Lake occurrence is located north of Witches Brook and approximately 5 kilometres west of Logan Lake.

The area lies in the Lower Jurassic Guichon Creek Batholith. The Spud Lake area is underlain primarily by medium-grained, Guichon variety quartz diorite and granodiorite. This unit is cut by north trending dacite porphyry dikes up to 60 metres wide. To the west, at the Bethlehem mine (MINFILE 092ISE001), Guichon rocks have been intruded by Bethlehem phase granodiorite. Mineralization is controlled by intrusive contacts, north- trending faults and closely spaced fractures.

Alteration is generally weak and consists of chlorite, epidote and sericite. Minor fault zones have sericite-kaolinite gouges. Quartz, calcite and zeolite (laumontite, heulandite) veining occurs sporadically. Oxidation consists of malachite and limonite.

Mineralization is spotty and consists of disseminations and veinlets of chalcopyrite, bornite and pyrite. Specularite and magnetite are also present in small amounts.

In 1964, New Indian Mines soil sampled the area as the Job claims. In 1968, Vananda Explorations completed a 25.0 line-kilometre induced polarization survey on the area.