The Nixon showing region is underlain by mid Triassic to lower Jurassic Takla Group mafic volcanics and the mid Triassic Lunar Creek Ultramafic Complex. The oldest lithologies in the region are Stikine terrane mixed greenstone metamorphics and undivided sediments of the Devonian to Permian Asitka Group. The strata is intruded by Early and Middle Jurassic granodiorite and Late Triassic quartz monzonite.

In 1990, the British Columbia Geological Survey, under the leadership of Graham Nixon, conducted a fieldwork program on the Alaska-type Lunar Creek intrusion. One sample of chromitiferous dunite contained 1.02 grams per tonne platinum, suggesting that platinum is hosted within the chromitite (sample GN-89-7116B, Fieldwork 1990).

In 2006, Hard Creek Nickel Corp collected 38 rock samples from their Lunar claims which covered much of the ultramafic complex.