The McCorvie occurrence is located on a southeastern ridge east of Mount McClennan, at an elevation of approximately 750 metres.

The area is underlain by a band of Lower Cambrian limestone of the Tshinakin member of the Eagle Bay Formation extends northwest of Vavenby for 4 kilometres, forming a small steep sided mountain known locally as "Lime Bluff". The limestone is estimated to be up to several hundred metres thick. The unit lies enclosed in calcareous chlorite schist and greenstone derived from mafic volcanics. The unit continues southeastward crossing the North Thompson River.

Locally, a massive limestone hosts an erratic 2 centimetre wide vein with galena and sphalerite mineralization.

In 1984, a grab sample (R01143) assayed 2.203 per cent lead, 0.567 per cent zinc and 73.8 grams per tonne silver (Assessment Report 13560).

In 1989, a grab sample (89-DR-3) assayed 0.435 per cent lead and 9.1 grams per tonne silver (Assessment Report 19819).

In 1962, Herslev & Humphrey completed a program of geological mapping, sampling and a dip needle survey on the area as the McCorvie 1-5 claims. In 1984, Newmont Exploration a program of geological mapping, rock and silt sampling and ground magnetic and electromagnetic surveys. In 1989, the area was prospected and sampled by D.W. Ridley.