The PF-87 occurrence is located on the eastern flank of Mount Richards, approximately 2.5 kilometres south of Crofton.

The area is underlain by volcanics of the Upper Devonian McLaughlin Ridge Formation, (Sicker Group), reported to be altered to schists in the area. Intruding the country rocks is quartz feldspar porphyry of the Late Devonian Saltspring Intrusive Suite (formerly the Saltspring Intrusions).

Locally, mafic to andesitic flows and crystal to lapilli tuffs with chlorite-calcite alteration host disseminated pyrite and chalcopyrite mineralization.

In 1970, the area was explored as the Sirius claims by Canpac Minerals. In 1986 and 1987, the area was explored as the PF claims. Programs of geological mapping, prospecting, geochemical sampling and three diamond drill holes, totalling 1083.0 metres, were completed at this time. The best mineralized intersections were from ten isolated samples, which contained greater than 1000 parts per million copper over intervals of about 1 metre and one weakly anomalous gold sample. Seven samples from PF87-2 contained between 1243 and 3718 parts per million copper. Three samples from PF87-3 contained between 1160 and 2311 parts per million copper and one contained 780 parts per billion gold near the top of the hole (Assessment Report 16319).