The Viking mine is located at the south end of Pitt Lake on the east shore.

Two mineralized veins are hosted in a roof pendant of pre- Jurassic Twin Island Group amphibolite and quartzite. The pendant occurs within Late Jurassic diorite of the Jurassic to Tertiary Coast Plutonic Complex.

The North vein (#1 vein) is developed in a shear zone striking west and dipping 60 to 90 degrees south. The vein is usually between 0.60 and 1.8 metres in width, but 30 metre widths are reported at shallow depths. The South vein (#2 vein) strikes northeast, dips steeply southeast, and ranges from 0.90 to 1.1 metres in width.

The veins are mineralized with pyrrhotite, pyrite and chalco- pyrite, with minor covellite and a trace of sphalerite in a gangue of white quartz with minor calcite and fragments of wall rock. An adit in the North vein exposes mineralization over a length of 46 metres. The average assay of 900 samples, taken throughout the underground workings on the North vein, was 1.99 grams per tonne gold, 146 grams per tonne silver and 3.9 per cent copper (Minister of Mines Annual Report 1927, page 366).

The Viking Mining Company Ltd., produced 179 tonnes in 1916, with an average grade of 40.3 grams per tonne silver and 2.88 per cent copper. The Pitt Mining Company Ltd. attempted, unsuccessfully, to place the mine back into production between 1927 and 1929.