The showings, discovered in 1862 or 1863, are located at sea level on the southeast side of Burnaby Island.

The Sea King mineral claim was staked in 1907 by a Captain Locke. Some surface stripping was done to trace the contact. In 1918 copper ore from the Bank of Commerce claim was shipped to Jedway by A.T. Wilds. In 1919 Messrs. Campbell and Wilds, owners of the Mother Lode and Bank of Commerce claims, sank a shaft 11 metres on a chalcopyrite showing. Intermittent work was continued by Campbell and Wilds into 1921.

Limestones of the Jurassic to Triassic Kunga Group are cut by igneous dikes. The limestone contains a metre band of magnetite with minor chalcopyrite and pyrite which strikes 30 degrees and dips 80 degrees west. A short distance to the west is a light grey-coloured, 1.5 metre wide, igneous dike with hornblende, stringers of calcite and minor magnetite and chalcopyrite.