Processes affecting the massive sulphide lenses at the Delta deposit, Cape Smith Belt, Canada : implication for the distribution of PGE

Two Ni-Cu-PGE massive sulphide lenses associated with komatiitic basalt sills of the Delta deposit (Cape Smith Belt, Canada) have been studied in order to determine the contribution of metamorphism and deformation to the exsolution of platinum-group minerals (PGM) from massive sulphide. Indeed, the postmagmatic processes that affect the deposits are expected to change the primary mineral assemblage and the compositions of the minerals which would result in the redistribution of trace metals such as the PGE.