Haxi gold deposit is located in the western extension of the gold metallogenic belt of hatu-sartohai in western Junggar, Xinjiang, and it is a gold deposit with great metallogenic potential. In order to determine the source of ore-forming fluid, we discuss the fluid inclusions and hydrogen-oxygen isotope in the quartz vein containing native gold in the mineralization stage. The results show that there are many inclusions, the main is gas-liquid two-phase, followed by CO2-rich three-phase, and a little is pure-liquid. The homogenization temperature range from 226 ℃ to 325 ℃, salinities of fluid inclusions contents of NaCl range from 2.24% to 9.34%, densities range from 0.72 g/cm3 to 0.88 g/cm3. The population inclusion chromatography showed that the liquid composition of ore-forming fluid is rich in Ca2+, SO42-, Cl-, the gas phase composition is rich in CO2, and a little is CH4, N2. Comprehensively, the ore-forming fluid is late magmatic hydrothermal fluid, which characterized by medium temperature, low salinity, low density and mixed with atmospheric water. After mineralization, it is accompanied by multiple times of hydrothermal superposition mineralization.
Jiang Lei Wang Ying Zeng Xiangwu Nie Xiaoyong. Geochemical characteristics and source of the ore-fluid in Haxi gold deposit in western Junggar, Xinjiang[J]. Chinese Journal of Geology, 2019, 54(4): 1370-1382.