湖南省锑矿控矿因素及成因类型

发布时间：2018-04-21 01:13

本文选题：锑矿 + 地质学　；参考：《地质科技情报》2017年03期

【摘要】：锑是湖南省的优势矿种之一,研究锑矿地质特征及成因类型,对推动湖南省境内锑矿的找矿勘查具有一定社会现实意义和经济意义。控矿因素研究表明:其控矿地层有泥盆系、前寒武系、侏罗系-白垩系;稳定基底与活动坳陷带的边缘,在稳定基底的范围内,二者在其地质发展史中有着剧烈的相对活动的地区,是矿床赋存的有利构造区;矿床的分布受区域性大断裂和褶皱控制,多数矿床定位于区域性大断裂旁侧次级断裂与背斜交汇处;与汞、锑矿有关的岩体主要是印支期-燕山期花岗岩;酸性-中酸性斑岩(体)包括花岗闪长斑岩、花岗斑岩、石英斑岩等岩类,分布广泛,这些斑岩多与成矿关系密切。综合研究表明锑矿床在时间上主要形成于印支期-燕山期,在空间上集中分布在江南隆起的雪峰山弧形构造带,其次分布在湘中-湘南成锑带;地层、构造、岩浆岩等共同决定锑矿床的定位,最主要的成因类型为构造热液脉状矿床,重要的成因类型为层控热液整合型矿床、沉积改造层控型矿床。
[Abstract]:Antimony is one of the dominant minerals in Hunan Province. It is of social and economic significance to study the geological characteristics and genetic types of antimony deposits in Hunan Province. The ore-controlling factors show that the ore-controlling strata are Devonian, Precambrian, Jurassic-Cretaceous, stable basement and the edge of active depression, within the range of stable basement. In the history of their geological development, the two have a strong relative activity and are favorable tectonic areas for the occurrence of ore deposits, and the distribution of the deposits is controlled by regional large faults and folds. Most of the deposits are located at the junction of secondary faults and anticlines on the side of regional large faults; the rocks related to mercury and antimony deposits are mainly Indosinian Yanshanian granite; and the acid-intermediate acid porphyry includes granodiorite, granodiorite, granitic porphyry, granodiorite, granodiorite, granodiorite, granodiorite and granodiorite. Quartz porphyry and other rocks are widely distributed, and most of these porphyry are closely related to mineralization. A comprehensive study shows that the antimony deposit was mainly formed in the Indosinian to Yanshanian epoch in time, distributed in the Xuefengshan arc tectonic belt of Jiangnan uplift in space, and then in the antimony forming zone in central Hunan and southern Hunan. Magmatic rocks together determine the location of antimony deposits. The main genetic types are tectonic hydrothermal vein deposits, the important genetic types are stratified hydrothermal integrated deposits and sedimentary reformation stratabound deposits.
【作者单位】：湖南省地质调查院;
【基金】：中国地质调查项目“中国矿产地质与成矿规律综合集成和服务(中国矿产地质志)”(DD20160346)
【分类号】：P618.66

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