Genesis and tectonic setting of Shenshan Fe–Cu deposit in Inner Mongolia, Northeast China: Constraints from geochemistry, U–Pb and Re–Os geochronology, and Hf isotopes

The newly-discovered Shenshan Fe–Cu skarn deposit is located in the southern Great Xing’an Range of northeastern China. The mineralization occurs mainly in the exoskarn or marble wallrocks of the Permian Zhesi Formation, which were intruded by the Shenshan granodiorite and granite porphyry dykes. Molybdenite Re–Os dating yielded a weighted mean age of 160.2 ± 2.4 Ma (MSWD = 0.38), consistent with the LA–ICP–MS zircon U–Pb age of the granodiorite...