The Nunatak zone of the Inel property occurs in an area that is primarily underlain by marine sedimentary and volcanic rocks of the Upper Triassic Stuhini Group. Lower Jurassic andesitic volcanics of the Hazeleton Group overlie the Stuhini rocks and Early Jurassic feldspar porphyritic rock and monzodioritic to gabbroic rock intrude the strata. Strata is also cut by a alaskite (quartz-feldspar porphyry) pluton.

The Nunatak zone was trenched in 1973 and was mapped and trenched in 1984 as the Zinc Knob zone. Work revealed an altered, folded, thin-bedded sedimentary sequence including stratabound sulphides. Mineralization consists of pyrite, galena and sphalerite lenses that are cut by quartz, pyrite and arsenopyrite veins. A 7 metre sample taken from a trench that cut across part of the mineralization assayed 0.03 per cent copper, 0.63 per cent lead, 1.91 per cent zinc, 15.6 grams per tonne silver and 4.11 grams per tonne gold (Property File, Grove, 1987).

In 1991, Gulf International collected a sample of black argillite with 10-15 per cent disseminated pyrite that yielded 0.18 per cent copper; no other significant values were obtained (Assessment Report 22026).

Refer to Inel (104B 113) for details of the Inel property work history.