The Bralorne BB occurrence is situated on Silver Creek, just north of the mouth of Vital Creek, approximately 41 kilometres northeast of Takla Landing and 18 kilometres north of the Bralorne Takla mercury mine (093N 008). The showing was discovered in 1940.

The area is underlain by interbedded sediments and minor volcanics assigned to the Carboniferous to Jurassic Cache Creek Complex, which in this area strike north-northwest and dip to the east. These rocks are in contact with west dipping volcanics and minor sediments of the Middle Triassic to Lower Jurassic Takla Group along a north-northeast trending section of the Pinchi fault zone. Further east, the Takla Group rocks have been intruded by granodiorite of the Late Triassic to Early Cretaceous Hogem Intrusive Complex. Mississippian to Triassic ultramafic rocks of the Oceanic Ultramafites, formerly assigned to the Middle Permian to Late Triassic Trembleur intrusions, occur locally. A thick mantle of drift overlies most of these rocks in the vicinity of Silver Creek.

The occurrence is described as consisting of traces of cinnabar hosted within limestone and a carbonatized serpentine sill approximately 23 metres wide, which follows the fault contact. The limestone in the area has been dolomitized and brecciated by numerous subsidiary faults with various orientations (Geological Survey of Canada Memoir 252, page 154).

Extensive surface work undertaken in the early 1940s and a program of geological mapping, geochemical sampling and 183 metres of diamond drilling in three holes carried out in 1965 failed to outline a deposit of economic significance.

No recent information concerning this occurrence is available.