The Sun (St. Claire) occurrence is located on Mead Creek, approximately 1.5 kilometres south of the east end of Nahwitti Lake.

Regionally, the area is underlain by northwest-trending belts of basaltic volcanics and carbonate sedimentary rocks of the Upper Triassic Karmutsen and Quatsino formations (Vancouver Group) and mafic volcanics and sediments of the Upper Triassic to Lower Jurassic Bonanza Group (Holberg volcanic unit, Nahwitti River wacke and Parson Bay Formation). These volcanic and sedimentary rocks have been intruded by granodioritic rocks of the Early to Middle Jurassic Island Plutonic Suite.

Locally, along Meade Creek, a 6-metre wide band of Quatsino limestone in Karmutsen (?) andesite contains lenses of magnetite-pyrite-pyrrhotite up to 3 metres thick developed along both contacts and within mylonite zones. The lenses are generally less than 6 metres long and associated with minor amounts of chalcopyrite, sphalerite, galena and arsenopyrite. Garnet-epidote skarn is also present along Meade Creek. Monzonite of the Island Plutonic Suite is found to the south.

In 1990, a sample (32840) assayed 0.011 per cent cadmium, 0.179 per cent copper, 1.63 per cent zinc and 3.9 grams per tonne silver (Assessment Report 20328).

In 1991, a rock sample (97123) assayed 4.16 per cent copper, 0.42 per cent zinc, 77.1 grams per tonne silver and 5.30 grams per tonne gold, whereas other samples (97129) yielded up to 5.89 per cent zinc (Assessment Report 21270)

The area has been explored since the early 1930s. In 1952, American Smelting and Refining completed a program of geological mapping on the area. In 1962, Asbactes Corp. completed a program of geochemical sampling and a ground magnetometer survey on the area. In 1966, Giant Explorations Ltd. completed a program of geological mapping and geochemical sampling on the area as the HPH claims. During 1969 through 1973, Giant Explorations Ltd. completed programs of soil sampling and ground and airborne geophysical surveys on the area as the Sun claims. In 1979, Loredi Resources prospected and mapped the area as the Gold and Dust claims.

In 1980, Tally Resources Ltd. prospected and mapped the area as the Pato claim. In 1981, Silver Bar Resources prospected the area. In 1984, the area was prospected and sampled by Daiwan Engineering as the Mead claims. During 1987 through 1991, Hisway Resources Corp. completed programs of geological mapping, ground geophysical surveys, geochemical sampling and six drillholes, totalling 381.5 metres, on the area. In 1992, Cameco Corporation completed a program of rock and soil sampling, geological mapping and ground geophysical surveys on the area.

In 2017 and 2018, Precipitate Gold Ltd. completed programs of rock and soil sampling, gravity surveys and prospecting on the area as the Island Zinc property.