The Sal C showing is located at 2350 metres elevation above sea level, on the north face of Mount Willet 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 occurrence is on the eastern 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, strikes northwest and dips 60 to 70 degrees southwest. Lineations in the rocks plunge to the north 5 to 10 degrees, and it is presumed that the long axis of the mineralized zones are parallel to this plunge (Bulletin 49).

Mineralization consists of bands of fine grained disseminated pyrite with minor sphalerite and galena with white crystalline calcite separated by barren grey dolomite. Small, well-defined folds plunging at low angles to the north contain some of the mineralization. The main mineralized zone is 3 metres wide and is exposed at a number of places for a distance of about 100 metres. A 1 metre wide chip sample across the main mineralized zone assayed 0.59 per cent lead and 6.3 per cent zinc (Bulletin 49).