The Fog property is located 2.5 kilometers southeast of the Duncan Dam, at 1500 metres elevation above sea level, in the Slocan Mining Division.

Regionally, the area lies within the Kootenay Arc near the margins of the Ancestral North American Terrane. The Kootenay Arc is a curving belt of highly deformed metasedimentary and metavolcanic rocks which includes the Upper Proterozoic Horsethief Creek Group, the Eocambrian Hamill Group, the Lower Cambrian Badshot Formation, and the lower Paleozoic Lardeau Group. The volcano-sedimentary sequence is intruded by numerous Ordovician, Devonian and Mississippian granitoid plutons. The rocks have undergone regional metamorphism to middle or upper greenschist facies (Paper 1993-1).

The Fog prospect is on the western limb of the Duncan anticline within dolomite and limestone of the Lower Cambrian Badshot Formation which forms a narrow complexly folded band that separates micaceous quartzite of the Mohican Formation (Hamill Group) to the east from the phyllites of the Lardeau Group to the west. On the property, the Badshot Formation is overturned, dips at low angle to the northeast and plunges northwest.

Mineralization is exposed in roadcuts and trenches over a strike length of at least four claims. It consists of a 3 to 8 metre wide quartz vein which is subparallel to the foliation of the enclosing dolomite. The vein is mostly of pure white quartz but locally contains fluorite, calcite, azurite, malachite, galena, sphalerite, chalcopyrite and pyrrhotite (Assessment Report 3323).