The Claude Mountain vein occurs in an area of Devonian to Permian Stikine Assemblage rock. This package is intruded to the northeast by the Early Jurassic Zippa Mountain Plutonic Complex, which ranges compositionally from leuco-syenite to mafic syenite and pyroxenite, and to the east by the Late Triassic Seraphim Mountain Pluton consisting of quartz monzonitic rock.

In 1989, Corona Corporation prospected the MAC 1, 2, ZIP 1 and 2 claims (of the Inhini property) and collected 24 heavy mineral, 19 silt and 163 rock samples (Assessment Reports 19969). In 1990, Link Resources Inc. carried out a 700-kilometre airborne magnetic and EM survey over the entire Inhini Property (Assessment Report 20972).

Mineralization was noted in a quartz-sulfide vein at the 1600 metre level on the steep, relatively inaccessible, south facing slope of Mt. Claude. The quartz vein, 10 to 30 centimetres wide and locally swelling to up to 2 metres in the trench area, is hosted by unaltered tan to grey limestone and dips on average 60 degrees north into the hillside. Mineralization in the vein includes galena, sphalerite, tetrahedrite, malachite, pyrite and arsenopyrite. Sulfide mineralization in places is massive, composing 100 per cent of the vein.

One sample assayed 3.91 grams per tonne gold and 11,767.98 grams per tonne silver (Assessment Report 19969). The vein, where accessible, was trenched and chip sampled.