The Hemmingsen East occurrence is located in the northern head waters of Hemmingsen Creek, at an elevation of greater than 1000 metres.

The area is underlain by a series of basaltic flows and related pyroclastics of the Karmutsen Formation and is overlain by, or interbedded with, limestone of the Quatsino Formation; both formations belong to the Upper Triassic Vancouver Group. Andesite to rhyolite tuffs and breccias, with minor intercalated greywacke and argillite, of the Lower Jurassic Bonanza Group overlie the Upper Triassic rocks. Intruding this stratigraphic assemblage is the Early to Middle Jurassic Island Plutonic Suite of monzonite to diorite composition.

Locally, altered limestone hosts sulphide mineralization. Sulphides are described as primarily magnetite, pyrite and chalcopyrite.

In 2007 and 2009, Le Baron Prospecting completed a program of prospecting on the area as the Hemmingsen Creek project (claim 535899). In 2008, a sample (H031053) of altered limestone assayed 5.5 grams per tonne silver and 0.939 per cent copper (Assessment Report 30515).