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利用CHILLER软件模拟了紫金山铜金矿床主矿化阶段成矿流体的混合和局部减压等焓沸腾过程,模拟结果显示矿化具有低的HS-和Ca2+浓度,高的As含量。在混合和沸腾过程中,随着温度和压力的降低,pH值和fO2逐渐降低,这是紫金山铜金矿成矿流体的重要特征。混合和沸腾模拟过程中未见迪开石生成,表明矿区迪开石主要是流体/围岩反应产物,迪开石的生成需要高的铝活度。混合和沸腾均能促使金矿化,沸腾过程中200℃左右沸腾更有意义
CHILLER software was used to simulate the mixing and local isothermal enthalpy boiling of ore-forming fluid in the main mineralization stage of the Zijinshan copper-gold deposit. The simulation results show that mineralization has low concentrations of HS- and Ca2 + and high As content. During mixing and boiling, the pH and fO2 gradually decrease with the decrease of temperature and pressure, which is an important feature of the ore-forming fluid of the Zijinshan copper-gold deposit. Dibble formation was not observed during the mixing and boiling simulations, suggesting that the dikeite in the mining area is mainly a fluid / surrounding rock reaction product and that the formation of dickite requires high aluminum activity. Mixing and boiling can promote gold mineralization, boiling process boiling about 200 degrees more meaningful