The area is underlain by three lithologies in tectonic contact. They are a lower quartz biotite schist unit, an intermediate unit comprising calc-silicates, silicified limestone, semipelites, argillaceous sediments and graphitic sediments, and an upper unit of quartz-augen gneisses. A zoned diorite-quartz monzonite stock is present in the southern part of the property, below a major thrust zone. A broad asymmetric antiformal structure involves the above three units.
The intermediate unit hosts the skarn/scheelite-pyrrhotite zone near the crest of the antiform. The skarn unit, 3 to 10 metres wide, varies from silicified limestone to calc-silicates to the mineralized garnet-diopside skarn. The mineralization occurs as fine-grained, scattered coarse crystals and streaks of scheelite and pyrrhotite in irregular lenses parallel to bedding.