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矿床地质  2002 

陕西镇安二台子金铜矿床表生地球化学异常特征

Keywords: 地球化学,金存在形式,次生晕异常,金铜矿床,二台子

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Abstract:

为查明二台子金铜矿床的表生地球化学异常特征,采用土壤地球化学综合剖面的研究方法,对其进行了详细的分析研究。结果表明,区域上二台子金铜矿床的表生地球化学异常元素组合为Au_As_Sb_Hg_Cu,并表现出与原生异常在组合、含量等特征上的一致性。矿区内金、铜等成矿及指示元素在土壤中的不同层位产生了一定程度的富集。土壤和岩石样品的Au,As,Hg,Cu均密切相关。该矿床上覆的土壤及氧化矿石中的金主要以自然金相、水溶相和硫化物相形式存在,金的这种赋存相态特征可以作为寻找掩埋和隐伏金矿床的标志。

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