The Water Power-Brenton occurrence is located on Holyoak Creek, approximately 1.5 kilometres north west of its junction with the Chemainus River.

The area is within the Cowichan uplift, is located in an area underlain mainly by andesitic to rhyolitic volcanics of the McLaughlin Ridge Formation, Sicker Group. The local stratigraphy is disrupted by folding, faulting (pre-Triassic as well as Tertiary) and the intrusions of gabbro and diabase sills and dykes (informally called the Mount Hall Gabbro) that are coeval with the Upper Triassic Karmutsen Formation (Vancouver Group). The showing is in the vicinity of the Lenora-Tyee (092B 001) and Lara (092B 110) volcanogenic massive sulphide deposits and may be considered to be of related origin.

The Sicker rocks on the Mildred Crown grant (Lot 96) have been locally metamorphosed to sericitic and chloritic schists which have a general northwest trending strike and foliation. Pyrite, with minor chalcopyrite, occurs as stringers, elongate masses or as dissemin- ations within the schistose units. Sulphide content varies within the units but is generally between 2 and 5 per cent. Lenses of massive sulphides up to 2 metres thick occur throughout some of the schistose units.

On the old Water Power-Brenton claims on Holyoak Creek, down stream from the Mildred claim, a selected sample assayed 20.5 per cent copper, 103 grams per tonne silver and a trace of gold (Minister of Mines Annual Report 1923, page 274).

In 2007, Laramide Resources completed a regional program of geochemical sampling and airborne geophysical surveys on the area as apart of the Lara property.