The Dunlap South occurrence is located on the eastern shore of Harrison Lake, approximately 1.5 kilometres northwest of the mouth of Cogburn Creek.

The area is underlain by pelitic sediments, greenstone and greenschists of the Cretaceous Slollicum Formation.

Locally, altered metasediments adjacent to a diorite dike contain pyrrhotite, pyrite and chalcopyrite. The sulphides are massive and have replaced a zone up to 0.6 metres wide of sediments adjacent to an intrusive dike.

The area was first prospected, in 1921, by C.E.M. Dickson and W.M. Alexander as the James McKenzie, John Lougheed, Alex Crawford and Wm. Alexander claims. From 1982 to 1986, various programs of prospecting were completed by J.M. Logan.

In 1984, a grab sample of massive sulphides assayed 3056 parts per million copper and 0.22 parts per million gold (Assessment Report 12147). In 1986, a grab sample of the zone assayed 2700 parts per million copper and 50 parts per billion gold (Assessment Report 14922).