Melt inclusions in quartz from felsic volcanic rocks of the Iberian Pyrite Belt: Clues for magmatic ore metal transfer towards VMS-forming systems

•Evidence for intermediate melts in Albernoa showing early crustal assimilation.•High Sn in MIs support the model of Sn-rich plutons feeding VMS of the IPB.•Lower melt T and undegassed Cu may play an important role in mineralization.•Magmatic Sn-Cl rich fluids and high magma T signal prospective potential in Albernoa.•MIs suggest direct magmatic contribution to the Cu-Sn budget in Neves-Corvo deposit.