The Cowbird (Jay) occurrence is located on a north tributary of Pimainus Creek, approximately 12.8 kilometres northeast of Spences Bridge.

The area is underlain by Border phase quartz diorites of the Upper Triassic to Lower Jurassic Guichon Creek Batholith.

Locally, outcrop is restricted to old trenches and roadcuts. Blebs of chalcopyrite occur with hematite and pyrite in an 18-metre wide epidote-chlorite–altered shear zone. Disseminated chalcopyrite, malachite and hematite are also described in extensively chlorite- and sericite-altered diorite.

In 1969, a random chip sample over 9 metres assayed 0.11 per cent copper (Assessment Report 2395).

Work History

Historical trenches, of unknown age, have been developed on the occurrence.

In 1956, New Jersey Zinc Exploration Co. Ltd. completed a program of soil sampling and a 55.5 line-kilometre ground magnetic survey on the area as the Toketic property.

In 1960, Northwest Ventures Ltd. completed a ground magnetic survey on the area as the VL claims.

In 1969 and 1970, Largo Mines Ltd. completed programs of geochemical (rock and soil) sampling and ground magnetic and induced polarization surveys on the area as the Cowbird, DS and Pat claims. Also at this time, Largo Mines completed a program of soil sampling on the Don and Ken claims to the south of the occurrence.

In 1972, Cominco Ltd. completed a program of soil sampling on the area as the Tom and VL claims of the Toketic property. In 1978, a 7.3 line-kilometre ground induced polarization survey was completed on the TOK claim.