The Bay Creek occurrence is located on the north shore of Cypress Bay.

The area is underlain by a thick succession of Paleozoic Sicker Group volcanics and sediments that have been intruded by numerous dykes, sills and plugs ranging from gabbro to granodiorite in composition.

The Sicker rocks comprise predominantly pyroclastic mafic to felsic volcanics with minor intercalations of chert, argillite and siltstone. The pyroclastics range from coarse lapilli (rarely breccia) tuffs to dusts tuffs. Generally, the strata has an average strike of 150 degrees and dip of 50 degrees. Stocks of mafic intrusives belonging to the pre-Jurassic Westcoast Complex disrupt area strata.

magnetite and/or ilmenite.

Locally, an occurrence of massive sulphide, containing approximately 80 per cent pyrite and minor pyrrhotite, is exposed over a 4 metre surface width. The zone is hosted by silicified and sericitized schistose felsic rock (rhyolite). In 1985, a sample assayed 228.00 grams per tonne silver, 0.41 grams per tonne gold, 0.62 per cent lead, 0.061 per cent copper and 0.017 per cent zinc (Assessment Report 14003, Fig.4).

Mineralization consisting of scattered zones of chalcopyrite and pyrrhotite are also reported to occur on the north shore of Cypress Bay between sea level and 30 metres elevation (Geology, Exploration and Mining in British Columbia 1972, p. 267).

During 1985 through 1988, BHP-Utah Mines completed programs of geological mapping, rock, silt and soil sampling and ground geophysical surveys on the area as the Cypress, Maypay and Whitecliff claims.