Marc Constantin received a BSc and MSc in geology from Université Laval and obtained a PhD in marine geosciences from the Université de Bretagne Occidentale, France. He was a postdoctoral fellow at the University of Toronto and at Laurentian University and was appointed assistant professor at Université Laval in 2000. His research interests include the petrology, geochemistry, and metallogenesis of magmatic Ni-Cu-PGE deposits in mafic–ultramafic intrusions located in a variety of geological contexts, including high-grade metamorphic terrains in the Grenville and Superior Provinces, massif-type anorthosites, and the Sudbury igneous complex. He has also worked on the petrogenesis of crustal and mantle rocks at mid-ocean ridges and in ophiolites. Marc uses both field and geochemical analytical approaches. He has set up a neutron activation laboratory for the determination of trace amounts of Au, Ir, Ni, Cr, REE, Hf, Ta, Th, and several other elements. He teaches igneous petrology at the undergraduate and graduate levels, as well as courses in exploration & environmental geochemistry and the geodynamics of ocean basins. Marc is the 2005 president of the Quebec section of the CIMM, where he has been particularly active at providing opportunities for students to exchange with professionals from the public and private sectors and he filled a vacant position on MAC Council in 2006-2007.