The Cow 11 occurrence is located on the north side of Waldon Creek.

The area is underlain by Devonian Nitinat Formation (Sicker Group) volcanics and Mississippian to Pennsylvanian Fourth Lake Formation (Buttle Lake Group) sediments intruded by sills, dikes and granitic rocks, probably of the Jurassic Island Plutonic Suite. The area is highly faulted and major folds are present. The Paleozoic Sicker Group rocks have undergone greenschist metamorphism.

Locally, a rusty brown gossanous diorite occurs. No sulphide mineralization was reportedly visible. Disseminated pyrite is reported from tuffs in the area.

In 1992, GLS Global Listing Service Limited completed a program of rock and soil sampling on the area as the Chem property. A sample (9153) of diorite assayed 13,000 parts per billion gold, 14.7 parts per million silver and 3376 parts per million copper (Assessment Report 22329).