Chemical and stable isotopic (B, H, and O) compositions of tourmaline in the Maocaoping vein-type Cu deposit, western Yunnan, China: Constraints on fluid source and evolution

摘要

This study determined the chemical and stable isotopic (B, H, and O) compositions of three stages of ore-related hydrothermal tourmaline in the newly discovered Maocaoping vein-type Cu deposit, western Yunnan, China, as well as the chemical and B isotopic compositions of magmatic tourmaline (tourmaline-G) from a neighboring peraluminous granitic intrusion that is contemporaneous with the Cu mineralization. The objective was to constrain the source and evolution of the CO2-rich ore-forming fluid.