The Three Sisters South mineral occurrence is hosted in a kilometre size Stuhini inclusion within the leucocratic Cake Hill pluton (Table 1, Figure 3g, Fieldwork 2011). Mineralization consists of several zones with 1-5 per cent pyrite disseminated and in veinlets, locally associated with green actinolite. The linear and recessive nature of the gullies suggests that the 20-metre-wide pyritic zones represent north-northwest to northeast striking subvertical faults cutting the Stuhini succession. One of two assay samples (11BVA33-257 in Table 2) returned 0.3 per cent copper, 0.03 per cent molybdenum and slightly elevated tungsten (Fieldwork 2011, page 116).