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地球学报  2005 

吉林夹皮沟立山金矿床流体包裹体特征及成矿温度

DOI: 10.3975/cagsb.2005.01.04

Keywords: 夹皮沟金矿带,立山金矿床,石英脉型,流体包裹体,成矿温压条件

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Abstract:

夹皮沟立山金矿为一大型石英脉型金矿床。对取自该区老5号矿脉石英脉型金矿石流体包裹体研究表明,该区石英中主要发育CO2,含CO2三相,气液两相及单液相等4种类型原生流体包裹体;测温结果显示,各类流体包裹体均一温度为218.2～420.0℃,盐度为3.1％～11.4％;经CO2包体、富CO2包体及气液两相包体共生发育及包体中CO2相成分分析结果表明,成矿流体为不混溶体NaCl-H2O-CO2系类型。据不混溶体系成矿温压估算方法,确定该矿床成矿温度为335～415.0℃,成矿压力为(750～1250)×105Pa,成矿深度约为4.4～7.5km。

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