柯坤家;李艳军;牛明伟;刘奔;

• 1:中国地质大学(武汉)资源学院
• 2:中国地质大学(武汉)固体矿产勘查国家级实验教学示范中心

摘要(Abstract)：

造山型金矿床是世界上重要的金矿床类型,也是当前国际矿床学研究热点。近年来该类金矿床在成矿流体及成矿物质来源、成矿机理及成矿模式等方面研究取得了重大进展。研究表明:造山型金矿床成矿流体及成矿物质主要为富含水的火山沉积岩在区域变质过程中因脱流体而释放出来的。Au主要以Au[HS]_2~-的络合物形式沿着深大断裂向浅部运移,期间CO_2和H_2S不仅能提高Au在流体中的溶解度,还能使Au在运移过程中不因沉淀而贫化。变质脱流体成矿模式很好地解释了该类金矿床成矿流体及成矿物质的来源、运移和成矿元素的沉淀。水岩反应和压力的瞬时改变是Au发生高效沉淀的主要因素。建议在造山型金矿床研究过程中采用单个流体包裹体成分LA-ICP-MS等先进分析测试技术。

关键词(KeyWords)： 造山型金矿床;成矿流体;成矿物质;成矿机理;成矿模式

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41202054;41672083);; 中央高校基本科研业务费区域引导专项(CUGQYZX1708);; 中国地质调查局地质调查项目(12120114081101)

作者(Author): 柯坤家;李艳军;牛明伟;刘奔;

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DOI:

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