花岗质岩浆和矿化之间的关系:重要概念和关键特征

发布时间：2018-01-26 04:27

本文关键词： 花岗岩成矿作用稀有金属伟晶岩斑岩　出处：《岩石学报》2017年05期 　论文类型：期刊论文

【摘要】：最近对与花岗岩相关的锂、稀土金属和贱金属(例如Cu和Mo)矿产需求重新激发了人们对其成矿作用研究的兴趣。本文综述了不同类型花岗质岩石及与其相关的矿床:1)与高分异花岗岩有关的浸染状稀有金属矿化;2)热液型锡和钨矿化(如:矽卡岩型矿床);3)伟晶岩型稀有元素矿化;4)斑岩型矿化。虽然花岗岩和相关矿化作用之间(特别是斑岩系统相对于稀有金属)的联系还没有明确,但最近这些成矿系统的相关研究进展为探讨两者之间的关系提供了条件。本文重点回顾了与花岗岩相关成矿作用的主要特征,以及与不同类型矿化有关的花岗质岩浆的多样性,并论述了不同类型矿床的成矿模式。尽管长英质侵入岩浆系统复杂多样,但近来与这些矿化系统有关的研究进展可望能够作为找矿勘探的指示。地球化学特征可以揭示岩浆系统的氧化还原状态,进而可以判断斑岩系统的成矿潜力,它还可以与其他找矿勘探指标如矿物的同位素和微量元素分析联合使用。本文还讨论了通过熔融包裹体分析,研究微量元素在硅酸盐岩浆与挥发分体系中的行为。
[Abstract]:Most recently, lithium associated with granite. The demand for rare earth metals and base metals (such as Cu and Mo) has rekindled interest in the study of their mineralization. This paper reviews different types of granitic rocks and their associated deposits: 1). Disseminated rare metal mineralization associated with high grade isomorphic granites; 2) hydrothermal tin and tungsten mineralization (e.g. skarn deposits; 3) mineralization of rare elements in pegmatite type; 4) porphyry mineralization. Although the link between granite and associated mineralization (especially porphyry systems relative to rare metals) is not clear. However, recent advances in these ore-forming systems provide conditions for exploring the relationship between them. This paper focuses on the review of the main characteristics of granite-related mineralization. And the diversity of granitic magma associated with different types of mineralization, and the metallogenic models of different types of deposits, although felsic intrusive magmatic systems are complex and diverse. However, recent research progress related to these mineralization systems is expected to be an indication of prospecting and exploration. Geochemical characteristics can reveal the redox state of magmatic system and then judge the ore-forming potential of porphyry system. It can also be used in conjunction with other prospecting indicators such as isotopic and trace element analysis of minerals. The behavior of trace elements in silicate magma and volatile matter system was studied.
【作者单位】：湖首大学;合肥工业大学资源与环境工程学院;
【基金】：国家自然科学基金项目(41320104003) 国家重点研发计划项目(2016YFC0600206) 国家高端外国专家项目(DW20143400159、TS2015HFCY034)联合资助
【分类号】：P588.121;P611
【正文快照】： 1引言广义上的花岗岩所包含的岩石类型丰富,大致上可定义为由石英、钾长石和斜长石组成的侵入岩(Le Ma5tre,1989)。Barbarin(1990)综述了花岗岩的分类方法,并提出了一个综合矿物组合、野外地质、岩相学特征、岩石化学及同位素化学特征的新分类方案。然而这个方案并没有被广泛

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