The Inhini Cirque showing occurs in an area of Devonian to Permian Stikine Assemblage rock overlain by Upper Triassic rock of the Stuhini Group. The stratigraphy is intruded by Triassic to Tertiary stocks of the Coast Plutonic Complex.

In 1989, Corona Corporation prospected the Lisa 1, 2, 5, DD 2 and JJ 2 claims (of the Inhini property) and collected 31 heavy mineral, 25 silt and 141 rock samples (Assessment Reports 19971, 19972). In 1990, Link Resources Inc. carried out a 700-kilometre airborne magnetic and EM survey over the entire Inhini Property (Assessment Report 20972).

The veins generally average 2 to 3 centimetres wide, but locally swell to 0.6 metre, and cut greenish lapilli tuff, argillaceous sediments, conglomerate and mudflow. The veins carry gold and silver and minor to trace amounts of galena, sphalerite, tetrahedrite, pyrite, azurite and malachite. The best mineralized samples taken on these veins on the claim ran 1.27 grams per tonne gold (sample 82039) and 61.02 grams per tonne silver (sample 55269) (Assessment Report 19971). Copper, lead and zinc values were reported to be insignificant.