广西锑矿成矿规律研究

    Research of metallogenic regularity of antimony deposits in Guangxi

    • 摘要: 广西锑矿资源丰富,为研究其成矿规律,在前人工作的基础上,较为全面地总结了广西锑矿的勘查开发、资源分布、矿床成因、空间分布特征、主要成矿时代及成矿规律等,并划分出了岩浆热液型、浅成中-低温热液型和风化型3个三级矿床成因类型,其中岩浆热液型为广西主要的锑矿床类型。在三级矿床成因类型的基础上共划分出7个四级成因类型,其中复合型锡石-硫化物锑矿床规模最大,且与岩浆热液成矿作用最为密切。此外,广西锑矿分布与富集受地层、构造、岩浆岩及接触带的“四位一体”联合控制,主要集中富集在滇黔桂被动陆缘构造单元、湘中—桂中北(坳陷)成矿带中,有工业价值的锑矿床主要赋存在泥盆系中,大规模爆发富集于燕山晚期。

       

      Abstract: Guangxi antimony deposits resources are rich, which have become one of the dominant minerals in Guangxi. In order to investigate its metallogenic regularity, the authors of this paper have comprehensively summarized the Guangxi antimony deposits exploration, development, resource distribution, deposit genesis, spatial distribution characteristics and metallogenic regularity. The antimony deposits in Guangxi are divided into three genetic types, including magmatic hydrothermal type, epigenetic middle-low temperature hydrothermal type and weathering type, among which the magmatic hydrothermal type is the main type. 7 fourth-order genetic types are divided on the basis of the third-order genetic types, among which the compound cassiterite-sulfide antimony deposits are the largest, and most closely related to magmatic hydrothermal mineralization. In addition, the Guang-xi antimony distribution and enrichment are jointly controlled by the four in one, including the strata, structure, magmatic rocks and contact zone. These antimonies were mainly enriched in Dianqiangui passive continental margin tectonic units and Xiangzhong-Northern Guizhong (depression) metallogenic belt, and the antimony deposits with industrial value mainly occur in the Devonian system, which burst in Late Yanshanian.

       

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