At the Trinity showing, pyrite and chalcopyrite mineralization is exposed over a 60 by 60 metre area along a road cut 100 metres east of Highway 101, 5.8 kilometres north-northeast of the head of Pender Harbour on the Sechelt Peninsula. The mineralization is hosted in a roof pendant of basalts and andesites of the Upper Triassic Karmutsen Formation (Vancouver Group) engulfed in diorite and granodiorite of the Jurassic to Tertiary Coast Plutonic Complex.