黔西南SBT容矿金、锑矿床矿相学特征及找矿标志研究  

Study on the mineralography characteristics and prospecting marks of SBT-hosted gold and antimony deposits in southwest Guizhou

作　　者：宋威方 刘建中[1,2] 吴攀[1,3] 郑禄林 王泽鹏[4] Song Weifang;Liu Jianzhong;Wu Pan;Zheng Lulin;Wang Zepeng(College of Resource and Environmental Engineering,Guizhou University;Bureau of Geology and Mineral Exploration and Development Guizhou Province;Key Laboratory of Karst Georesources and Environment,Ministry of Education;No.105 Geological Party,Bureau of Geology and Mineral Exploration and Development Guizhou Province)

机构地区：[1]贵州大学资源与环境工程学院 [2]贵州省地质矿产勘查开发局 [3]喀斯特地质资源与环境教育部重点实验室 [4]贵州省地质矿产勘查开发局一○五地质大队

出　　处：《黄金》2021年第11期14-21,共8页Gold

基　　金：国家自然科学联合基金项目(U1812402);国家重点研发计划“深地资源勘查开采”专项(2017YFC0601500);贵州省研究生创新基金项目(黔教合YJSCXJH〔2020〕095)。

摘　　要：通过对黔西南台地相区典型金、锑矿床矿体赋存层位和控矿特征等进行分析总结,显示黔西南金、锑矿床主要赋存于龙潭组、茅口组和峨眉山玄武岩之间经区域构造和热液蚀变作用形成的构造蚀变体(SBT)中。基于以上发现,选取产出于SBT中的大厂锑矿床、水银洞金矿床Ⅰa矿体和戈塘金矿床为研究对象,进行矿物组合、结构构造、蚀变类型和成矿期次与成矿阶段划分等矿相学特征分析研究。结果显示:不同矿区、不同矿种之间存在相似的矿物组合、结构构造、蚀变类型和成矿阶段特征。分析总结并探讨造成不同矿区、不同矿种之间相似性的可能原因,系统总结了区域金、锑找矿标志,同时收集前人有关黔西南地区构造定型时代,以及典型金矿床成矿年代学数据,探讨黔西南台地相区金、锑矿床成矿体系问题,丰富和完善了卡林型矿床成矿理论,为构建区域成矿模式和找矿勘探理论提供支持。Based on the analysis and summary of the occurrence strata and ore-controlling characteristics of the typical gold and antimony deposits and orebodies in the platform facies area of southwest Guizhou.It is shown that the regional gold and antimony deposits mainly occur in the structural alteration body(SBT),a regional tectonic alteration formed by regional tectonics and hydrothermal alteration between Longtan Formation,Maokou Formation and Emeishan basalt.Based on these findings,the paper chose Dachang Antimony Deposit,Ⅰa orebody of Shuiyindong Gold Deposit and Getang Gold Deposit that occur in SBT as the research subjects,analyzed the mineralography characteristics such as the mineral compositions,structure and tectonics,alteration types,mineralization phases and mineralization stage division.The results show that there are similarities among mineral compositions,structure and tectonics,alteration types and mineralization stage division of different ore types and districts.The probable cause for the similarities in different ore types and districts was analyzed,summarized and discussed.The regional prospecting marks for gold and antimony were systematically summarized.At the same time,the data of tectonic formation age and typical deposits metallogenic chronology in southwest Guizhou were collected from previous research.The metallogenic system of gold and antimony deposits in the platform facies area of southwest Guizhou was discussed.The metallogenic theory for carlin type gold deposits was enriched and completed,providing support for setting theories for regional metallogenic mode and prospecting.

关 键 词：黔西南 金、锑矿床 矿相学 构造蚀变体 成矿体系 

分 类 号：TD11[矿业工程—矿山地质测量]