针对江西省中部相山矿田钻孔2 817m的深度发现工业铜矿化不同阶段石英、碳酸盐中流体包裹体的岩相学和显微测温研究,判断其第一阶段流体为成矿前流体,包裹体的均一温度介于146℃~197℃,流体盐度0.82%~5.72%NaCleqv;第二阶段流体为成矿期流体,其所形成的细晶石英与大量金属硫化物相互嵌生,测得其均一温度介于270℃~320℃,盐度可分为两个端元,分别介于3.42%~6.97%NaCleqv和25.56%~46.25%NaCleqv,显示了沸腾条件下的捕获特征;第三阶段流体为成矿后流体,流体均一温度介于136℃~210℃,盐度介于0.34%~5.22%NaCleqv。激光拉曼探针分析表明,与成矿前相比成矿期流体内CO2,N2,CH4等活跃性挥发分气体明显增多。综合分析认为流体上升过程中的减压沸腾、pH值上升等环境的综合变化是铜元素富集成矿的主要因素。相山矿田和德兴矿集区同属于赣-杭火山岩成矿带的一部分,两者产出均与中生代时期的岩浆-热液作用有关,且共同受赣-杭深大断裂带的控制,形成超浅成-喷出相的中酸性赋矿岩体,成矿温度相似,同位素研究结果表明,两者成矿物质均主要由矿区内古老基底地层提供,深部岩浆热液只对成矿起到聚集改造作用,并未提供大量物源,与德兴地区相似的成矿条件,使相山矿田表现出良好的铜多金属找矿前景。 According to the depth of 2 817 m drilled in the Xiangshan ore field in central Jiangxi Province, the petrographic and microscopic temperature measurements of fluid inclusions in quartz and carbonate at different stages of industrial copper mineralization were found, and the first stage fluid was determined as ore-forming The homogenization temperatures of the precursors and inclusions ranged from 146 ℃ to 197 ℃ and the salinities of the fluids ranged from 0.82% to 5.72% NaCleqv. The second stage fluid was the fluid during the ore-forming stage. The fine-grained quartz formed by the inclusions intercalated with a large amount of metal sulphides The average temperature ranged from 270 ℃ to 320 ℃. The salinity can be divided into two end units, ranging from 3.42% ~ 6.97% NaCleqv and 25.56% ~ 46.25% NaCleqv, respectively. The results show that the trapping characteristics under boiling conditions In the third stage, the fluid is the ore-forming fluid with the homogenization temperature of 136 ℃ ~ 210 ℃ and the salinity of 0.34% -5.22% NaCleqv. Laser Raman probe analysis showed that the active volatile gases such as CO2, N2 and CH4 in the fluid during mineralization increased significantly compared with those before metallogenesis. The comprehensive analysis shows that the comprehensive changes of environment such as decompression boiling and pH value rising during fluid ascending are the main factors of copper enrichment. Both Xiangshan orefield and Dexing ore district belong to the part of Gan-Hang volcanic metallogenic belt. The output of both is related to the magmatic-hydrothermal effect during the Mesozoic and controlled by the Gan-Hang deep fault zone To form an intermediate-acidic ore-hosting rock body of super-shallow eruptive-facies facies, with similar metallogenic temperatures. The isotopic study shows that both ore-forming materials are mainly provided by the ancient basement strata in the mining area, whereas the deep magmatic hydrothermal fluids are only responsible for the mineralization Played a role in aggregation and reconstruction, did not provide a large number of provenance, similar to the Dexing area and the metallogenic conditions, so that the good performance of the Xiangshan ore prospecting prospects of copper polymetallic.