The Hisnit-Iron Skarn occurrence is exposed in a creek bed close to its outflow on the western shore of Hisnit Inlet, Nootka Sound, approximately 35 kilometres west of the town of Gold River.

The area is underlain by metamorphic rocks of the Paleozoic to Jurassic West Coast Crystalline Complex. To the north, a northwest trending graben structure contains a northeast striking and northwest dipping stratigraphic succession of Triassic Quatsino limestone, Triassic Parson Bay Formation sediments and Jurassic Bonanza Formation volcanics. The graben structure and other rocks in the area are intruded and possibly underlain by granodiorite stocks and sills of both the Jurassic Island Plutonic Suite and the Eocene Mount Washington Plutonic Suite.

Locally, grey-green, fine-grained, weakly foliated, silicified, chloritic and epidotic mafic volcanics with 5 per cent quartz-epidote-sulphide stock work stringers contain 0.15 per cent sulphides including chalcopyrite, and sphalerite.

From 2006 to 2008, D. Berkinshire completed programs of prospecting and rock geochemical sampling. From 2009 to 2011, Compliance Energy completed programs of geological mapping, geochemical surveys and airborne geophysical surveys. A rock sample (8851) from a 1.0 metre thick iron skarn zone assayed values of 1435 parts per million copper and 7.95 parts per million molybdenum (Assessment Report 31749).

In 2020 rock sampling and geological mapping in the area of Hisnit North and Hisnit South showings, approximately 1 to 1.5 kilometre west of Hisnit-Iron Skarn was conducted for Mirva Properties Ltd. on their Hisnit property. Besides anomalous results from resampling of the Hisnit North and Hisnit South showings, two samples of anomalous copper concentrations of 0.21 per cent Cu and 0.24 percent Cu (Hisnit West) were gathered from gossanous rocks on a new logging road.