The TL5798 showing is located on a west flowing un-named tributary of the Gordon River, east of the northern head waters of Hemmingsen Creek.

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 units 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, disseminated chalcopyrite is hosted by diorite.

In 2007 through 2009, Le Baron Prospecting completed a program of prospecting on the area as the Hemmingsen Creek project (claim 535963).