The area of the Steep Creek showing is underlain by Devonian to Permian Stikine Assemblage rock which overlain by Upper Triassic rock of the Stuhini Group. The stratigraphy is intruded to the east by the Late Triassic Seraphim Mountain Pluton, consisting of quartz monzonitic rock, and to the northeast by the Early Jurassic Zippa Mountain Plutonic Complex, which ranges compositionally from leuco-syenite to mafic syenite and pyroxenite.

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).

At the 1200 metre level in a creek on the south-facing slope of an unnamed mountain at the headwaters of the west fork of Dick Creek, a narrow north trending quartz vein occurs. Argillite and limestone units have been displaced by several sub-parallel north-south trending faults along which porphyry dikes have intruded. The vein, 5 metres long by 0.5 metre wide, occurs within one of these porphyry dikes near its contact with the argillites. Massive bands of galena, up to 5 centimetres wide, and disseminated galena, sphalerite, tetrahedrite, chalcopyrite and malachite occur with this vein.

A second, unrelated showing (Toe-in Creek showing) occurs at the same elevation two drainages east of the initial showing. Here calcite-quartz veins, 10 to 20 centimetres wide, in shear zones in the argillites host galena, chalcopyrite, tetrahedrite, sphalerite and malachite mineralization. One sample (91065) from a 10 centimetre wide quartz vein, exposed for 35 metres, assayed 1.32 grams per tonne gold and 4299.12 grams per tonne silver (Assessment Report 19969).