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不同成因类型金矿床成矿期黄铁矿成分成因标型特征 被引量:29

Composition typomorphic characteristics and statistics analysis of metallogenic pyrite in gold deposits of different genetic types
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摘要 黄铁矿是金矿床中普遍而重要的载金矿物,对其成分标型进行深入研究可获得大量成因方面的信息。采用δFe-δS、主微量元素蛛网图、δFe/δS-As、(Fe+S)-As、Co-Ni-As图对黄铁矿的主微量元素进行研究,得出了各类型金矿床成矿期黄铁矿的主微量元素标型特征。结果表明,各成因类型金矿床成矿期黄铁矿的主微量元素特征、特征元素组合、相关系数以及主微量元素蛛网图、δFe/δS-As图、(Fe+S)-As图都具有明显分区特征。因此,不同成因类型金矿床成矿期的黄铁矿具有典型的成因标型特征,这与其不同类型金矿床的成矿地质作用、成矿热液来源、成矿条件等密切相关。这些研究成果对金矿床中黄铁矿标型的研究以及金矿床的成因类型判别和找矿具有重要的借鉴意义。 Pyrites are so common yet important gold-bearing minerals widely existing in gold deposits that the analysis of their composition typomorphic characteristics contributes a lot to genesis research.By studying major and trace elements in pyrites through spider diagrams and δ Fe/δ S-As、(Fe+S)-As、Co-Ni-As diagrams,we obtain the composition typomorphic characteristics of pyrites in different types of gold deposits during their metallogenic periods.The results indicate that major and trace element characteristics of pyrites in different genetic types of gold deposits,the combination of characteristic elements,correlation coefficients and major and trace element spider diagrams、δ Fe/δ S-As、(Fe+S)-As diagrams each have very distinct characteristics.Therefore,it is inferred that pyrites in different genetic types of gold deposits have their own typical composition typomorphic characteristics,which are closely related with the geological background of metallogenesis,the hydrothermal sources of metallogenesis and the factors of metallogenesis of different types of gold deposists.The study provides valuable references for typomorphic researches of pyrites in gold deposits as well as the distinguishment of different genetic types of gold deposits and explorations.
出处 《黄金》 CAS 2012年第3期11-16,共6页 Gold
基金 国家自然科学基金项目(90914002) 全国危机矿山接替资源找矿项目(20089937)
关键词 金矿床 成因类型 黄铁矿 成分标型 gold deposit pyrite genetic type composition typomorphic characteristics
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