Based on a study of fluid inclusions in quartz from Xiangfenchang, Laohutou, Niulanling and Jinzhuyuan deposits in Limu orefield of Guangxi, it is observed that primary fluid inclusions in hydrothermal ore-forming minerals are mainly pure liquid phase inclusions and some gas-liquid phase inclusions. In Xiangfenchang deposit, the average homogenization temperature of fluid inclusion is 203. 5 ℃, the salinity is 5. 54wt%NaCl, the density is 0. 885g/cm3, the pressure is 55. 31MPa, and the ore-forming depth is 5. 94km; in Laohutou deposit, the average homogenization temperature of fluid inclusion is 168℃, the salinity is 6. 50wt%NaCl, the density is 0. 934g/cm3, the pressure is 46. 72MPa, and the ore-forming depth is 5. 42km; in Niulanling deposit, the average homogenization temperature of fluid inclusion is 187℃, the salinity is 5. 03wt%NaCl, the density is 0. 919g/cm3, the pressure is 46. OOMPa, and the ore-forming depth is 5. 37km; in Jinzhuyuan deposit, the average homogenization temperature of fluid inclusion is 178℃ , the salinity is 5. 54wt%NaCl, the density is 0. 913g/cm3, the pressure is 48. 42MPa, and the ore-forming depth is 5. 51km. On the whole, the fluid inclusions belong to the system of medium-low temperature, low salinity and medium density. And it can be concluded that this ore deposit was formed in a mesogenetic ore-forming environment.%综合研究广西栗木矿田香粉厂、老虎头、牛栏岭、金竹源矿床矿石中的石英流体包裹体,结果表明,成矿热液矿物中的原生流体包裹体类型主要为纯液相包裹体,其次为气液两相包裹体,香粉厂矿床流体包裹体的均一温度平均值为203.5℃,盐度为5.54wt％NaCl,密度0.885g/cm3,压力为55.31MPa,成矿深度为5.94km;老虎头矿床流体包襄体的均一温度平均值为168℃,盐度为6.50wt％ NaCl,密度0.934g/cm3,压力为46.72MPa,成矿深度为5.42km;牛栏岭矿床流体包裹体的均一温度平均值为187℃,盐度为5.03wt％NaC1,密度0.919g/cm3,压力为46.00MPa,成矿深度为5.37km；金竹源矿床流体包裹体的均一温度平均值为178℃,盐度为5.54wt％NaCl,密度0.913g/cm3,压力为48.42MPa,成矿深度为5.51km,总体属中低温度、低盐度、中等密度的体系；表明该矿床形成于中深成环境.
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