The B occurrence is located near the headwaters of Moosevale Creek, approximately 4.5 kilometres southwest of Savage Mountain, about 164 kilometres northwest of the community of Germansen Landing. This occurrence includes the Topper showing and the surrounding mineral showings.
The general geology consists of a sequence of northwest striking formations which get increasingly younger to the southwest. The oldest are Permian Asitka Group sedimentary and volcanic rocks. A thick volcanic succession of Upper Triassic Takla Group rocks lies unconformably to the east.
The immediate area of the B showing is underlain by Lower Jurassic Telkwa Formation (Hazelton Group) volcanics. These are separated from the Upper Triassic Takla Group (in this area the Moosevale Formation) by a northwest-trending fault. The Telkwa Formation rocks consist of well bedded andesitic pyroclastics and predominantly maroon-purple to green intercalated flows. Bedding in the area strikes northeast and dips gently to the northwest.
The Topper showing consists of several sporadic and discontinuous mineralized fractures. The fractures, generally striking northeast and dipping 60 degrees southeast, occur within an approximately 8 by 30 metre area. Localized shear zones trend northwest and are perpendicular to a steeply dipping, northeast striking joint pattern.
Several mineral showings are clustered around the Topper showing and appear to be associated with the structural features in the area. Mineralization typically occurs with quartz-carbonate-epidote alteration along fractures, veins and shears. Mineralization consists of abundant fine-grained chalcocite, common malachite and lesser bornite and chalcopyrite. In 1973, one of the best assays from the Topper showing area was 5.85 per cent copper and 150.9 grams per tonne silver over a narrow width (unspecified) (Assessment Report 4882). This sample came from a mineralized pod along a shear.
In 1973-74, Brascan Resources Limited conducted prospecting, detailed geological mapping, silt and soil sampling, and 14.5 line kilometres of ground magnetometer survey.
