A "trachytic" unit (Unit EPFt) of moderately northerly dipping alkali-feldspar porphyry, lithic tuff, tuff breccia and pyritic schist is structurally underlain by quartz-sericite schist and chlorite schist with interlayered metasediments of the Devonian to Mississippian part of the Eagle Bay Assemblage (Schiarizza and Preto, 1987).
Molybdenite, galena, pyrite and fluorite occur as disseminations and fracture fills in the trachyte unit. A drill hole intersected 0.067 per cent MoS2, 10.63 per cent CaF2 and 0.02 per cent U3O8 over 3.5 metres (Assessment Report 4957).
Molybdenite and minor galena were intersected in a drill hole 750 metres to the west. Assays of 0.026 per cent MoS2 over 20 metres and 0.4 per cent lead over 1.5 metres wide were encountered (Property File, Report and Map by P. Pisani, 1970).