The Polly (Bolduc) occurrence is located on the north eastern slopes of Mount Bolduc, approximately 2 kilometres west of Harris 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.

The occurrence comprises two showings, as shown by a sketch geology map of the area (Property File). The first consists of disseminated chalcopyrite in diorite and is located about 1.5 to 2 kilometres northeast of Mount Bolduc.

The second, about 500 metres northwest of the first and near the northwest bank of a creek, consists of magnetite and chalcopyrite in limestone.

In 1971, Lucky Strike Mines completed a program of geological mapping, soil sampling and a ground magnetometer survey on the CW and LG claims. In 1980, Union Miniere Exploration and Mining completed a ground magnetometer survey on the Bolduc claim.