The Graham Inlet magnesite occurrence is located 5.5 kilometres west of Taku, on the south side of Table Mountain, about 16 kilometres northwest of the community of Atlin.

Carbonatized outcrops, some of considerable extent and consisting principally of magnesian carbonate, contain veins several centimetres wide of relatively pure magnesite. The hostrocks (Middle Triassic to Lower Jurassic Cache Creek Complex) appear schistose, fine-grained, and are greyish to dark green on fresh surface but weather to a rough surface with a bright, gossanous colour. In thin section, the magnesian carbonates are associated with plagioclase and minor amounts of calcite, dolomite, epidote, and an unidentified iron mineral.

Although the occurrence descriptions are limited, they seem similar in setting to the magnesite occurrences in the Atlin and Sloko River areas which are associated with the Upper Mississippian to Permian Atlin Ultramafic Allochthon which intrude into the volcanic-sedimentary stratigraphy.

In 2011, 168 soil samples and 4 rock samples were collected in the Graham Creek watershed and slopes of Table Mountain on behalf of Blind Creek Resources Ltd.