Abstract: The Jincheng gold deposit, in the Luoshan County, Henan Province, lies in south of Tongbai-Shangcheng ductile shear zone. The ore deposit, which occurs in the east side of Lingshan granitic mass, is hosted in the lower stratum of Huwan formation complex in the upper Proterozoic. Based on the geologic feature, we conducted the comparative study on REE and trace element characteristics of granite-porphyry dyke and Lingshan granitic mass, moreover we further investigated the oxygen isotope compositions of the paragenous quartz and the carbon isotope compositions of fluid inclusions within paragenous quartz, as well as the sulfur and lead isotope compositions of the paragenous pyrite. We found that the REE and trace element characteristics of granite-porphyry dyke is similar to those of the Lingshan granitic mass, and that the granite-porphyry dyke originated in the magmatic hydrothermal activities in the late Yanshanian stage. The δ34S value of pyrite in the main orebody ranges from -6.9‰ to +5.5‰ with a mean of +2.3‰. The lead isotope composition show the typical characteristics of the lower crust lead isotope, similar to those of Huwan formation complex. The δ18O values in the ore range from +5.5‰ to +11.4‰ with a mean of +2.3‰; the δ13CCO2PDB values of fluid inclusions within paragenous quartz range from +6.3‰ to +2.8‰ with a mean of +4.4‰. The δ18O-δ13C results suggest that ore fluids mainly came from magmatic hydrothermal fluids with participation of small amounts of atmospheric water. According to our research，we consider that the ore-forming materials are mainly derived from the Huwan formation complex, and secondly derived from the magmatic hydrothermal activities in the late Yanshanian stage.

Key words: Tongbai-Dabie, Jincheng gold deposit, REE, trace element, isotope；Luoshan, Henan Province