Hydrogen, oxygen, sulfur and lead isotope composition tracing for the ore-forming material source of Dongguashan copper (gold) deposit in Tongling, Anhui Province

The layered main orebody of Dongguashan copper (gold) deposit is hosted in the Carboniferous limestone, with many opinions on its ore-forming material source. For the purpose of identifying material composition of Dongguashan copper (gold) deposit, isotope dates of hydrogen, oxygen, sulfur and lead were determined and compared in different mineralization types of this ore district. The comparison on isotope dates of sulfur and lead between Dongguashan and typical skarn deposits in Tongling district were also conducted for better understanding the source of components in Dongguashan. The results indicate that different types of orebodies have the same source of components; their ore-forming fluids are mainly magmatic water. Results of sulfur isotope suggest its magmatic source which is in agreement with the typical skarn deposit in this area. Isotope determination indicates that the lead of orebodies having different types is mainly mantle-derived, associated with magmatism.