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岩浆热液中所含的挥发性组分主要为H_2O,CO_2,S,F和C1,它们对金属成矿元素的迁移和富集具有重要影响。根据软硬酸碱原理,岩浆热液的挥发性组分具有比岩浆更高的硬度和电负性,从而可从熔体中萃取金属元素、导致岩浆热液成矿作用的发生。硬碱F具有高硬度和电负性,可以导致具有硬酸性质的W,Sn从熔体进入流体成矿,而软碱S则具有低硬度和电负性,主要吸引具有软酸性质的Cu,Au,Ag成矿,Cl的作用比较复杂,主要影响IOCG型矿床的形成。
The main volatile components in magmatic hydrothermal fluids are H 2 O, CO 2, S, F and Cl, which play an important role in the migration and enrichment of metallogenic elements. According to the theory of hard and soft acids and bases, the volatile components of magmatic hydrothermal fluids have higher hardness and electronegativity than that of magma, so the metal elements can be extracted from the melt and lead to the occurrence of magmatic hydrothermal mineralization. Hard base F, which has high hardness and electronegativity, can lead to W and Sn with hard acid properties from melt to fluid mineralization while soft base S has low hardness and electronegativity, mainly to attract Cu , Au, Ag mineralization, the role of Cl is more complex, mainly affecting the formation of IOCG deposits.