The Mother Lode occurrence is located 1 kilometre northwest of the Caledonia (082KSW041), on the north side of the Kaslo River some 23 kilometres northwest of Kaslo, British Columbia.

Silver-lead-zinc mineralization occurs in the Triassic Slocan Group, locally consisting primarily of black fissile phyllites with interbedded limestone, calcareous phyllites and brown gritty quartzites. The general structural trend is 310 degrees, dipping generally southwesterly. Greenstones and ultramafic rocks of the Permian Kaslo Group unconformably underlie the Slocan Group to the east, also hosting silver-lead-zinc mineralization. Satellite stocks, dikes and sills are generally correlative with the Nelson batholith to the immediate south. Late stage lamprophyre dikes are also common.

The occurrence has a very brief history of recorded production of silver, lead and zinc in 1951. Little information is available for this occurrence, other than production records. Significant minerals, deposit character and type are inferred from production information and surrounding occurrences.