高级搜索
    贾斌. 辽南某些金矿床的流体包裹体研究[J]. 地质与资源, 1993, 2(1): 9-18. DOI: 10.13686/j.cnki.dzyzy.1993.01.002
    引用本文: 贾斌. 辽南某些金矿床的流体包裹体研究[J]. 地质与资源, 1993, 2(1): 9-18. DOI: 10.13686/j.cnki.dzyzy.1993.01.002
    shu
    Jie Bin. HYDROTHERMAL ORE-FORMING SOLUTION OF SOME GOLD DEPOSITS IN SOUTHERN LIAONING STUDIED WITH FLUID INCLUSION[J]. Geology and Resources, 1993, 2(1): 9-18. DOI: 10.13686/j.cnki.dzyzy.1993.01.002
    Citation: Jie Bin. HYDROTHERMAL ORE-FORMING SOLUTION OF SOME GOLD DEPOSITS IN SOUTHERN LIAONING STUDIED WITH FLUID INCLUSION[J]. Geology and Resources, 1993, 2(1): 9-18. DOI: 10.13686/j.cnki.dzyzy.1993.01.002
    shu

    辽南某些金矿床的流体包裹体研究

    HYDROTHERMAL ORE-FORMING SOLUTION OF SOME GOLD DEPOSITS IN SOUTHERN LIAONING STUDIED WITH FLUID INCLUSION

      摘要
    • 摘要: 辽南猫岭、黄家营子和金厂沟金矿的含矿流体为H2O-NaCl-CO2体系。流体包裹体的爆裂温度曲线的爆峰次数与含金石英脉的金含量呈正相关关系，猫岭金矿流体包裹体的气相成分随着成矿作用的进行，其CO、CH4、CO2、N2、O2、H2的摩尔百分数有所降低，而H2O则有所增高。流体包裹体的CO2/H2O比值与含金石英脉的金含量呈正相关关系，而其离子成分的SO42-/Cl-比值与石英脉金含量呈反相关关系，研究表明，猫岭金矿和黄家营子金矿为岩浆热液与地下水混合热液成矿。矿液从猫岭金矿向黄家营子金矿方向流动，这两个金矿的成矿流体为低盐度、酸性、强还原环境。金厂沟金矿的成矿热液亦为岩浆热液和地下水混合热液。其成矿流体亦为低盐度、强酸性、强氧化环境。

       

      Abstract: Maoling gold deposit occurs in the second member of the Gaixian Formation of Proterozozic Liaohe group. In the mining area there is Indosinian porphyritic-ike granite. The Mineralization of the Maoling gold deposit can be divided into four stages. Inclusions are present in mineralization stage Ⅰ and Ⅱ as primary two phase inclusions about -4μm in size. In Maoling gold deposit metallogenetic temperature and pressure ranges respectively from 327° to 513℃ and 512×105 to 1234×105 Pa in the stage Ⅰ,from 325°to 407℃ and from 668×105 to 1322×105Pa in the stage Ⅱ. The metallogenetic temperature in Huangjiayingzhi gold deposit 0.8km east to Maoling gold deposit ranges from 325°to 407℃,and the pressure from 782×105 to 1302×105 Pa. The ore fluid of the Maoling gold deposit and the Huangjiayingzhi gold deposit is regarded to be of H2O-NaCl-CO2 system. The Jinchanggou gold deposit occurs in the contact zone of the first member of the Gaixian Formation of Liaohe group with a porphyritic-like granite. The mineralization can be divided into three stages. The gold mineralization is dominantly in stage Ⅰ. Its primary fluid inclusion consists mainly of two-phase inclusion and three -phase gas,H2O and liquid COt inclusion. The two sorts of inclusion are about 5 to 6μm in size. The metallogenetic temperature ranges from 325 -335℃ and the pressre from 1080×105 to 1360×105 Pa. The ore fluid is of H2O-NaCl-CO2 system. The amount of peaks of decrepitation temperature curve of the fluid inclusions is in positive correlation with Au content of gold quartz vein. Molarity of gas components CO,CH4,CO2,N2,O2, H2 of the fluid inclusions in the Maoling gold deposit is reducing with mineralization evolution. CO2/H2O value of fluid is in positive correlation with and SO42-/Cl- value of fluid inclusions is negative correlation with Au content of gold quartz vein. We could deduce from the content of K+,Na+ and Ca2+,the value of SO42-/Cl-and Cl-/F-ratio,and geological setting that the ore fluid is composed mainly of magmatic water mixed with groundwater and that it is of low salinity,low acidity arid strong reduction environment in the Maoling and Huangjiayinzi gold deposits,and low salinity,high acidity and strong oxidation environment in Jinchanggou gold deposit.

       

      • HTML全文
      • 参考文献(0)
      • 相关文章
      • 施引文献
    • 资源附件(0)

    /

    返回文章
    返回