“金山式”金矿地质特征及成矿模式

GeologicalCharacteristics and MetallogenicModel of Gold Deposit of Jinshan Type

  • 摘要: “金山式”金矿床属于受韧性剪切带控制的变质热液型金矿床。金矿体赋存于中元古界双桥山浅变质岩内, 并严格受韧性剪切带控制。韧性剪切带内构造岩、围岩蚀变分带明显, 并具有典型的“(超)糜棱岩—石英、黄铁矿、铁白云石化—金矿化”等“三位一体”成矿特征。基于对金山式金矿床地质特征的分析和研究, 笔者提出了“火山沉积—区域变质—韧性剪切带控矿容矿—叠加改造”的“金山式”金矿床成矿模式。

     

    Abstract: The gold deposit of Jinshan is metamorphic hydrothermal solution type which is controlled by the ductile shear belt.The gold deposit is occurred in epirock of middle-proterozoic Shuangqiaoshan, and is controlled closely by ductile shear belt.In the ductile shear belt, the alteration and zonation of tectonite and wall rock are obviously, and miliolite belt, quartz, iron pyrite, ankerite alteration belt and gold mineralization belt are trinity. Based on analysis and study of the geological characteristics of Jinshan gold deposit, the metallogenic model of Jinshan type gold deposit is put forward.

     

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