The Claim Post occurrence is located on the western shore of Bedwell Sound, approximately 1 kilometre north of Rant Point.

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. See H-W (092F 330) for a discussion of recent revisions of Paleozoic stratigraphy.

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.

Locally, fine lamellae to bands of massive to sub-massive sulphides are found in intercalated felsic to intermediate (rhyodacite) ash and lapilli tuffs. The surface exposure consists typically of one or more sulphide bands contained within an ash unit which may be separated from another ash tuff layer with sulphide bands by a thin lapilli tuff unit. The sulphide bands range from 1 millimetre to 5 centimetres in thickness and consist of 30 to 75 per cent pyrite, 1 to 7 per cent sphalerite and minor chalcopyrite and galena in a highly siliceous and sericitic matrix.

In 1987, drill hole CYP87001 intersected the zone from 4.10 to 4.91 metres in depth. The core assayed 0.9 per cent zinc, 0.016 per cent lead, 0.016 per cent copper and 0.7 grams per tonne silver over 0.81 metres (Assessment Report 16742, p. 23). Previous chip sampling yielding up to 3.94 per cent zinc, 5.0 grams per tonne silver, 0.206 per cent copper and 0.059 per cent lead (Assessment Report 16742).

During 1985 through 1988, BHP-Utah Mines completed programs of geological mapping, rock, silt and soil sampling, ground geophysical surveys, trenching and five diamond drill holes, totalling 805.3 metres, on the area as the Cypress, Maypay and Whitecliff claims.