Isotope evidence for copper migration and enrichment in the mantle wedge and implications for porphyry copper deposits
Description
We here present a combined study of the Cu elemental and isotopic compositions (δ65Cu) as well as Fe3+/∑Fe ratios on a well-characterized suite of the Mg-lherzolites, Fe-rich peridotites and pyroxenites from the Bohemian Massif in a Variscan subduction zone. The data included in this study allow us to investigate the migration, redistribution and enrichment of Cu in the mantle wedge and to relate those processes to the genesis of porphyry copper deposits. Table 1 presents selected major and trace element contents, mineral modal abundance, Fe3+/∑Fe and Cu isotopic compositions of the Bohemian peridotites and pyroxenites along with Cu isotopic data of reference materials; Table S1 presents all major (wt %) and trace (μg/g) element concentrations of the Bohemian peridotites and pyroxenites from Ackerman et al. (2009), Svojtka et al. (2016) and Huang et al., (2019); Table S2 presents the calculated variations of Cu contents and δ65Cu values in the evolved melts during melt-peridotite reaction in the mantle.