McCammon, in 1967, reported several occurrences of talc- carbonate alteration in slips in serpentinite, outcropping on the southwest slope of Mount Wright.

These occurrences are hosted in a band of serpentinite of the Carboniferous or older Anarchist Group that extends northwestward from the United States border across Mount Wright to McCarren Creek for 5 kilometres. On the Mabel property, a trench cut through serpentinite exposed a distinctive blue massive talc (N. Church, personal communication, 1970).