The Whistler occurrence is located approximately 1 kilometre from the trail leading up Trail Creek, about 32 kilometres northwest of the community of Germansen Landing.

The showing consists of galena, sphalerite, pyrite, and barite hosted in coarsely crystalline dolomite of the Middle Devonian Otter Lakes Group. Mineralization occurs in pods, 0.3 to 1 metre in size, disseminated with 5 to 10 per cent sphalerite and 1.2 per cent galena as replacement of dolomite. Barite forms large, coarsely crystalline clumps within coarse dolomite. This mineralization is developed just below the contact between the Otter Lakes Group dolomite and shale of the Upper Devonian to Permian Big Creek Group. One sample assayed 0.32 per cent lead and 6.6 per cent zinc (Open File 1990-17).

In 1990, the Whistler claim was staked resulting from identification of a new lead-zinc showing by F. Ferri of the British Columbia Geological Survey and recorded in Open File 1990-17. The showing was staked by D. Craig on behalf of Cominco Ltd. and prospecting and soil lines were performed to assess the potential of the showing. D.L. Craig reported two showings occurring along a stream cut. The lower showing is exposed in an outcrop 6 by 4 metres in area and consists of dolomite-hosted granular pyrite. Galena is present as minor pods and disseminations often associated with dolospar veins. The second showing, 400 metres upstream on a cliff face, is a gossanous zone, 6 by 2 metres in area. On the other side of the stream from this showing, a boulder train is present containing mineralized dolomite boulders grading from 5.56 to 9.15 per cent lead and zinc (Assessment Report 21135).