Virtually nothing is known about the Rivers Inlet occurrence, except that it consists of disseminated graphite, and that it is located in the vicinity of Rivers Inlet on the coast of the Coast Mountains (Geological Survey of Canada Annual Report 1900).

A previous compilation has located it, for no known reason, near McAllister Point, 12 kilometres west of the community of Rivers Inlet. This places it in a unit of migmatitic gneisses of the Jurassic to Tertiary Coast Plutonic Complex (Geological Survey of Canada Map 1386A). These rocks are at amphibolite metamorphic grade, and probably include metasedimentary components, and so it is feasible that they could host graphite.

A sample submitted for analysis contained 20.22 per cent graphite (Geological Survey of Canada Annual Report 1900).