The Sunshine showing is located about 100 metres west of Lesley (Cooper) Creek and approximately 2.5 kilometres south of the south end of Long Lake, 16 kilometres north of Stewart.

The area is underlain by Hazelton Group rocks of the Lower Jurassic Betty Creek Formation and overlying Lower to Middle Jurassic Mount Dilworth Formation (Open File 1987-22). These rocks lie on the crumpled west limb of the north-northwest trending Dilworth syncline.

According to Open File 1987-22, the immediate area of the showing is underlain by maroon to purple clastic sediments, interbedded with minor andesite to dacite tuffs and flows. Mapping by New Indian Mines reports greenstones and tuffs.

Mineralization reportedly consists of a 0.9 metre wide quartz-calcite vein in pyritized greenstone. The greenstone occurs in a 6 metre wide zone of highly sheared volcanics. The nature of the mineralization and the type of sulphides present are not clear. A grab sample of the mineralization assayed 34.3 grams per tonne silver and trace gold (Minister of Mines Annual Report 1928). Sparsely distributed pyrite, sphalerite and galena have also been reported in the area (Geological Survey of Canada Memoir 175, page 156).

In 1927, Bush Consolidated Gold Mines Ltd. consolidated several claims and claim groups in the area south of Long Lake including the Sunshine claim (Lot 4194). A 143 metre long adit was driven on the showing in 1928. In 1962, New Indian Mines Ltd. conducted geological mapping in the area, including the Sunshine claim. In 1986, Esso Minerals entered into an option agreement with Azure Resources Ltd. (formerly New Indian Mines), which included the Sunshine claim. The same year Tri Gold Industries Inc. (formerly Ocean Gold Resources Limited) entered into an option agreement with Esso.