The OK South deposit is located east of Okeover Inlet and south of Theodosia Inlet in the Bunster Hills. Powell River is located about 25 kilometres to the south. The OK North zone (092K 008) is located 2.3 kilometres to the north, near North Lake.

Two phases of intrusions occur within the Jurassic to Cretaceous Coast Plutonic Complex. Granodiorite is intruded by an elliptical, 1.6 kilometre long, leucocratic feldspar porphyry body, referred to as the OK Intrusive Complex and assumed to be Tertiary or younger. The dike-like leucocratic feldspar porphyry body is elongated north-northwest, varies from 30 to 600 metres in width, and has been inferred to be the core of the larger, variably altered granodiorite body. At least six phases of intrusions have been noted on the property, characteristic of many porphyry deposits. Later phases include narrow quartz-eye porphyries and postmineral diorites, which occur as north-northeasterly dikes and vary from 1 to 60 metres in width. Discontinuous andesite dikes represent the latest intrusive phase. Rocks in the vicinity of the OK South zone exhibit moderate to strong phyllic and argillic alteration. Elsewhere on the property, alteration is less intense and consists predominantly of propylitic alteration to chlorite and epidote. Post mineralization, north-northwest–trending faults cut both granitic rocks of the Coast Plutonic Complex and the younger OK Intrusive Complex.

Mineralization occurs in fractures, as quartz stringers, irregular veinlets, blebs and some disseminations. Intrusive breccias peripheral to the granodiorite host the higher grade copper mineralization. Trenching and limited diamond drilling suggest a north-northwest trend to the breccia zone, which consists of rounded 2 to 5 centimetre clasts of varying lithologies within a fine-grained matrix containing a high percentage of sulphide minerals.

Sulphide minerals include chalcopyrite, molybdenite and pyrite, with minor sphalerite and bornite. Minor magnetite is associated erratically with pyrite and chalcopyrite. Thin veneers of malachite, limonite and azurite are also present.

Since its discovery in 1965, the OK property has been explored by a number of geological, geochemical and geophysical surveys and by more than 14 000 metres of percussion and diamond drilling. This work outlined several copper-molybdenum mineralized zones over a northerly trend 5 kilometres in length. Between 1966 and 1985, several companies (Asrco Exploration Company of Canada Limited, Falconbridge, Granite Mountain Mines, Western Mines, Aquarius Resources Limited) carried out the exploration work.

In 1979, a 9-metre channel sample in the OK South zone assayed 0.24 per cent copper, 0.48 per cent molybdenum and 4.1136 grams per tonne silver (Assessment Report 8748).

In 2003, Lumina Copper Corp. and Eastfield Resources Ltd. conducted an exploration program of geological mapping, prospecting and bedrock sampling. Highlights include sample P-03-OK-21, which assayed 0.35 per cent copper (Assessment Report 27342).

In 2005, Goldrush Resources Ltd. and Eastfield Resources completed geochemical sample analyses and diamond drilling. Highlights include drillhole 05-OK-DH-06, which returned 96.9 metres grading 0.15 per cent copper (Assessment Report 28035).

For complete property history, see OK North (MINFILE 092K 008).