桐柏-商城地区金矿类型

    GOLDD EPOSIT TYPE IN TONGBAI-SHANGCHENG AREA

    • 摘要: 本文将桐柏-商城地区金矿床划分为三种类型,即产于含碳泥质变质岩系中的岩浆热液型金矿床、产于花岗岩中的岩浆热液型金矿床和剪切带型主矿床,并分别论述了各类型主矿床特征及成矿条件。指出含碳泥质陆屑碎屑-碳酸盐岩夹火山沉积合金建造是区内主要含金建造,它为金矿成矿提供物质来源,金矿找矿工作的重点应放在这套合金建造的分布地段。

       

      Abstract: The gold deposits in Tongbai-Shangcheng area are classified into three types,i.e. the magmatic hydrothermal deposit occurrenced in Carbonaceous-clay metamorphosed rocks and in granites, and the gold deposits occurreneed in shear zones. In this paper,the geological characteristics and mineralization conditions of each type gold deposit are summarized. And pointed out, the main auriferous formation in this area is the carbonaceous-clay terrigenous clasfics-carbonate rocks formation,in between that placed volcano-sedimentary. The formation offered mineralised material to gold deposits. The prospecting orientations are the areas of the auriferous formation occurred.

       

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