“…MORB are formed by 10-20% partial melting, and are believed to be sulfur-saturated at their source (Keays, 1995;Mavrogenes and O"Neill, 1999). Thus, they commonly coexist with an exsolved sulfide melt that hosts most of their chalcophile and siderophile element budget, as in the pyroxenites (Patten, 2012;Patten et al, 2010;Peach et al, 1990).…”