Genesis of the Hal?lar Metasediment-Hosted Cu-Pb (±Zn) Mineralization, NW Turkey: Evidence from Mineralogy, Alteration, and Sulfur Isotope Geochemistry

This study contributes to our understanding of the evolution Hal?lar Cu-Pb (±Zn) mineralization (NW Turkey) based on mineralogical and geochemical results sulfur isotope data. The area represents local with some Zn brecciated-stockwork vein type along NE–SW fault gouge zone at lower boundary Sakarkaya Düztarla granitoid rocks. Two main zones, consisting sericite–quartz–chlorite ± kaolinite pyrite (i.e., zone-1) calcite–epidote–albite chlorite sericite zone-2), were observed within central ore mineral mining site. Different assemblages recorded; contains chalcopyrite, galena, pyrite, sphalerite alteration zone-1, oxidation/supergene includes covellite goethite. mass balance calculations show that samples zone-1 an increase in SiO2, Fe2O3, K2O, LOI Ag, As, Cu, Mo, Pb, S, Sb, Zn, reflecting high pyritization sericitization silicification. On other hand, from zone-2 are rich CaO; Na2O; P2O5; TiO2; LOI; carbon-reflecting calcite, epidote, albite alterations. A uniform magmatic source sulfides is suggested by their mean ?34S value ?1.62‰. Furthermore, primary metal metasediments intrusive magmatism. These observations suggest metasediment-hosted was formed epigenetic hydrothermal processes after sedimentation/diagenesis metamorphism.