///The Chahansala gold deposit, a newly discovered gold deposit in West Tianshan, is located at the west edge of the Late Paleozoic Yilianhabi’erga arc-trench belt. State w:st="on">Ore bodies are in the form of irregular veins and mainly occur in the shatter zone of fine-grained diorite that has intruded in the Upper Carboniferous tuffaceous siltstone and subordinately exist in the contact zone, with weak wall rock alteration. Studies of fluid inclusions in some gangue minerals show that temperatures of the ore-forming fluids are 220~340℃, δD values of the hydrothermal gangue mineral quartz are -92‰~-74‰, the δ18OV-SMOW are 11.8‰~12.6‰, suggesting that ore-forming fluids are made up of magmatic water and formational water. δ13CV-PDB values of the hydrothermal gangue mineral calcite are -8.92‰~-8.06‰, and δ18OV-SMOW values are 13.45‰~17.18‰, implying that CO2 in the ore-forming fluids was mainly derived from the mantle-derived carbon. The 206Pb/204Pb of ore sulfides are 18.036~18.173, 207Pb/204Pb are 15.536~15.612, and 208Pb/204Pb are 37.940~38.097, indicating that the ore metals were derived from the magma. The δ34SV-CDT of sulfides are -9.8‰~-7.3‰, suggesting that the mineralization H2S resulted from the crust.