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大井矿床锡铜矿体萤石中存在中 -高温度、低盐度含锡和中 -低温度、中等盐度含铜两种流体包裹体 ,该两种流体包裹体的分布、气液比、温度 -盐度关系初步显示它们是两种不同的流体体系 ,而不是一种流体从高温向低温、高盐度向低盐度的系列演化 ,与成矿阶段的划分基本吻合 ,表明大井矿床锡铜矿体很可能是两种不同来源的成矿流体在同一空间上的叠加成矿 ,因而锡和铜可以形成单独矿体。该两种流体包裹体的发现和研究对进一步追索大井矿床不同矿种流体的来源和演化有重要意义 ,同时也为大井矿床成因及外围找矿提供了新的依据
There are two kinds of fluid inclusions in the tin-copper orebody of Dajing deposit, including medium- high temperature, low-salinity tin, medium-low temperature and medium salinity copper. The distribution of the two fluid inclusions, gas-liquid ratio, The relationship between temperature and salinity initially shows that they are two different fluid systems, rather than a series of fluid evolution from high temperature to low temperature and high salinity to low salinity, which basically agrees with the division of the ore-forming stage. It is likely that the copper ore body is a superimposed mineralization of the ore-forming fluids from two different sources in the same space so that tin and copper can form separate ore bodies. The discovery and study of these two kinds of fluid inclusions are of great significance for further tracing the source and evolution of fluids of different mineral types in the Dajing deposit and providing a new basis for the genesis and peripheral prospecting of the Dajing deposit