| 太白维山大型银矿床地质地球化学特征 |
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| 引用本文： | 秦明宽,叶荣.太白维山大型银矿床地质地球化学特征[J].铀矿地质,1997,13(1):30-36. |
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| 作者姓名： | 秦明宽 叶荣 |
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| 作者单位： | 核工业北京地质研究院，中国地质大学 |
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| 摘 要： | 太白维山大型银矿床为典型的中低温火山－次火山隐爆角砾岩型矿床，受岩性和断裂构造控制明显，矿体的产出部位和矿石品级与隐爆角砾岩关系密切。本文通过对基岩和１：２０万水系沉积物资料的分析与处理，得出基岩中主成矿元素组合为Ａｇ－Ｃｕ－Ｐｂ－Ａｓ－Ｓｂ－Ｚｎ，水系沉积物中主成矿元素组合为Ａｇ－Ｐｂ－Ｚｎ－Ｃｄ－Ｍｎ－Ｈｇ的结论，同时指出Ｐｂ可作为此矿床最重要的间接指示元素，而主成矿元素中各单元素异常浓集中心对银矿床的产出部位有很好的指示作用，为找矿的重要指标。
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| 关 键 词： | 太白维山，银矿床，地球化学，异常指示元素 |
GEOLOGIC-GEOCHEMICAL CHARACTERISTICS OF TAIBAIWEISHAN LARGE-SIZED SILVER DEPOSIT |
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| Qin Mingkuan.GEOLOGIC-GEOCHEMICAL CHARACTERISTICS OF TAIBAIWEISHAN LARGE-SIZED SILVER DEPOSIT[J].Uranium Geology,1997,13(1):30-36. |
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| Authors: | Qin Mingkuan |
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| Abstract: | Taibaiweishan large-sized silver deposit is a typical volcanic-subvolcanic low-moderate temperature one of cryptoexplosive breccia type. It is obviously controlled by lithology and fault structures. The occurrence location of ore bodies and ore grade are closely associated with the cryptoexplosive breccia. By analysing and processing data of bedrocks and 1:200000 stream sediment survey, this paper concludes that Ag-Cu-Ph-As-Sb-Zn and Ag-Pb-Zn-Cd-Mn-Hg are the main metallogenic element assemblages for the bedrocks and stream sediments respectively. Meanwhile,it points out that Pb can be regarded as the most important indicator-element for the silver deposit. In addition, the concentrated centers of individual element anomalies in major metallogenic element assemblage may well indicate the occurrence of silver deposit as the important index in prospecting. |
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| Keywords: | Taibaiweishan Silver deposit Geochemistry Indicator-element of anomaly |
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