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萨热阔布金矿产于新疆阿尔泰山南缘泥盆系康布铁堡组变质酸性火山岩、火山碎屑岩中, 近矿围岩黄铁矿化、网脉状硅化、碳酸盐化发育, 金的主成矿阶段有黄铁矿-石英阶段(Ⅱ )和多金属硫化物阶段(Ⅲ ). 主成矿阶段脉石英中流体包裹体很发育, 显微观察和冷冻法研究表明黄铁矿-石英阶段包裹体类型以液态纯 CO2包裹体(LCO2)为主, 其密度可高达 0.85 ~ 1.07 g/cm3, 其次为富 CO2包裹体(LCO2-LH2O),少量富H2O包裹体(LH2O-LCO2). 多金属硫化物阶段脉石英的包裹体类型更复杂, 还有CO2-CH4体系的流体, 其固相 CO2 Tm低达?78.1~?61.9℃, Th,CO2 也很低, 为?33.7 ~ ?17.7℃. 高密度 CO2流体的捕获压力估算为150~350 MPa. 激光Raman 探针分析证实了纯CO2包裹体的成分特征. CO2流体的δ C为?10.725‰ ~ 13?21.151‰, 与地幔矿物中 CO2流体的δ C 值相似. 这些特征均与其他石英脉型或蚀变岩型的热液金矿 13明显不同. 富 CO2流体还具有区域上的特征, 其来源可能与后碰撞造山过程的地幔脱气作用有关.
The Sagacuobu gold deposit is produced in metamorphic acid volcanic rocks, volcaniclastic rocks, pyrite mineralization in the near ore rock, reticular silicification and carbonate formation in Devonian Kangbudiebao Formation on the southern margin of Altay Mountain, Xinjiang. (Ⅱ) and polymetallic sulphide phase (Ⅲ) in the main metallogenic stage.The fluid inclusions in vein quartz in the main metallogenic stage are well developed, and microscopic observations and freezing studies show that pyrite- The quartz phase inclusions are dominated by liquid pure CO2 inclusions (LCO2) with densities as high as 0.85-1.07 g / cm3, followed by LCO2-LH2O and a small amount of H2O-H2O inclusions (LH2O-LCO2) In the polymetallic sulphide vein, quartz inclusions are more complex and contain CO2-CH4 fluids with solid-phase CO2 Tm as low as -78.1 ° -61.9 ° C, Th and CO2 as low as -33.7 ° C. 17.7 ℃ .The capture pressure of high-density CO2 fluid is estimated to be 150-350 MPa.The laser Raman probe analysis confirmed the compositional characteristics of pure CO2 inclusions.The δ C of CO2 fluid is from 10.725 ‰ to 13 21.151 ‰, which is close to that of mantle minerals The CO2 values in the CO2 fluid are similar, all of these characteristics are in agreement with others Or quartz vein type hydrothermal alteration type gold deposits 13 are significantly different. CO2-rich fluid also has a feature on the region, orogenic mantle degassing process after its source may collide with related.