1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. Shenyang Center of Geological Survey, CGS, Shenyang 110034, China

In order to determine the ore-forming fluid and metallogenic mechanism of the Huanggoushan Pb-Zn deposit in Linjiang area, the authors undertook petrography, micro-thermometry and C-H-O-S-Pb stable isotope analysis of fluid inclusions in lead-zinc ores from the main metallogenic stage(polymetallic sulfide stage). The results show that the inclusions are gas-liquid two-phrase belonging to NaCl-H₂O system. The main metallogenic stage's fluid is characterized by medium temperature(209��~276��), medium salinity(1.98~16.34wt%) and low density(0.79~0.96 g/cm³).Themetallogenic pressure ranges approximately from 16.8 to 33.0 MPa with depth mainly in 1.68~3.30 km. The hydrogen and oxygen isotope analysis indicate that the ��¹⁸O_H2O and ��D values are 3.3×10^-3~9.9×10^-3 and -115×10^-3~-74.8×10^-3. Combining with the ��¹⁸O-��¹³C diagram of carbon and oxygen isotopes, it can be concluded that the metallogenic fluids are mainly from mantle-derived fluids and may have mixed with the meteoric water. The ��³⁴S values of sulfur isotopes range from 2.6×10^-3 to 18.9×10^-3, representing the enrichment of heavy sulfur. The ²⁰⁶Pb/²⁰⁴Pb, ²⁰⁷Pb/²⁰⁴Pb and ²⁰⁸Pb/²⁰⁴Pb ratios of lead isotopes vary from 15.43 to 15.57,15.25 to 15.33 and 34.88 to 35.07, respectively, indicating that the metallogenic materials were derived from Zhenzhumen Formation, but does not rule out the mixing of materials from deep source. Combining with the regional geology, the deposit belongs to mesothermal vein-type lead-zinc deposit formed in the subduction background of the Paleo-Pacific Plate to the North China Plate, and the metallogenic age is the Late Yanshanian.