The area of the WR occurrence is underlain by rocks of the Lower to Middle Jurassic Harrison Lake Formation. In the property area, these consist of massive dacitic flows and flow breccias, minor breccia, tuff breccia and tuff, and cherty fractured limonitic dacite.

Alteration and pyritization in the WR area are reported to increase northeastwards. Other than pyrite, mineralization is sparse, consisting of some very thin veinlets containing minor sphalerite, two small patches of malachite staining and one location where a specimen contained fine-grained galena (Assessment Report 4375).