Pyrrhotite and chalcopyrite in lime silicate rock (skarn) occur within granite gneiss of the Custer Gneiss complex. The Custer Gneiss is derived mainly from lower Mesozoic and possibly Paleozoic and Precambrian rocks, and metamorphosed in the Late Cretaceous or early Tertiary.
Two mineral showings are indicated on the north side of the Yola Creek valley about 1 kilometre downstream from where Cantelon Creek enters, possibly at about 2000 and 2500 metres elevation (GSC Summary Report 1923 Part A, Map 2023).
It is reported to be very similar to the Hinton 1,2 occurrence (092HSW100).