摘要
Based on the research of fluid inclusions and thermodynamics calculate in Shuiyindong gold deposit, the authors studied the physical-chemical conditions of mineralization, and the transportation form and deposition mechanism of the deposit. The research shows that the main temperature of gold mineralization is 215~267 ℃, and the pressure is 28.5~37.2 MPa. The ore-forming fluid with characteristics of weak acidity (pH=4.312), reducibility (fO2﹤10-35.315×105 Pa). AuHS0 is the main transportation form of Au in the ore-forming solution. The main deposition mechanisms of Au are the decrease in the activity of HS- and fO2 and an increase in pH values.