Gossanous cliffs outcrop for 1300 metres along the south side of the northern tributary of North Sloquet Creek (Simpson Creek), 16 kilometres west of the north end of Harrison Lake.

The showing is hosted in a nearly flat lying sequence of felsic ash and lapilli tuffs intercalated with feldspar porphyritic andesitic flows within the Early Cretaceous Brokenback Hill Formation, Fire Lake Group. A horizon of cherty rhyolitic tuffite lies near the top of the sequence. A thrust faulted section of interbedded argillaceous siltstone and dacitic tuffs overlies this sequence.

Mineralization is confined largely to the felsic tuffs, which contain 2 to 40 per cent pyrite. The pyrite occurs as disseminations, blebs and stringers, as 1 to 3 centimetre clasts and as massive pods, up to 30 centimetres in diameter. Traces of galena, chalcopyrite and sphalerite are also evident. A grab sample of felsic lapilli tuff, containing 10 per cent pyrite and 0.5 per cent galena, assayed 2.650 grams per tonne gold, 31.2 grams per tonne silver, 0.3850 per cent lead and 0.1490 per cent zinc (Assessment Report 17373, p. 7, Sample QKO-57).

The deposit was explored, between 1980 and 1987, for Kuroko- type volcanogenic massive sulphide deposits by Cominco Ltd. and Aranlee Resources Ltd.