The Sunkist Brook occurrence is located about 65 kilometres southeast of Fernie, about 1.2 kilometres north of Sage Creek.

The regional geology in vicinity of the occurrence indicates that the Sunkist Brook area is underlain by dolomitic carbonate rocks of the Helikian Kitchener Formation, Purcell Supergroup. Copper, as chalcopyrite, or chalcocite and bornite, is present in widespread small occurrences throughout the region often associated with quartzitic phases of the sediments, and in many cases with the dikes and sills. Mineralization occurs as disseminations and fine fracture fillings in quartzite beds, in shales, and to some degree in dioritic dikes and quartz vein material. Argillites appear to favour the chalcocite-bornite association. Much of the host stratigraphy was historically reported as being Grinnell Formation.

Refer to the Sunkist Brook South (082GSE095) occurrence for work history.