文献类型：期刊文献

中文题名：黔西南两类容矿围岩金矿对比及对深部找矿勘查的指示

英文题名：Comparison of two types of ore-hosting surrounding rock golddeposits in Southwestern Guizhou and its implications for deep prospecting

作者：李俊海 吴攀 刘建中 张双菊 王泽鹏 谢卓君 杨成富 陈发恩 张兵强

第一作者：李俊海

机构：[1]贵州省地质矿产勘查开发局一0五地质大队;[2]自然资源部基岩区矿产资源勘查工程技术创新中心;[3]喀斯特地质资源与环境教育部重点实验室;[4]贵州大学资源与环境工程学院;[5]贵州省地质矿产勘查开发局;[6]贵州理工学院资源与环境工程学院;[7]中国科学院地球化学研究所矿床地球化学国家重点实验室

第一机构：贵州省地质矿产勘查开发局一0五地质大队

年份：2023

卷号：44

期号：7

起止页码：29-36

中文期刊名：黄金

外文期刊名：Gold

收录：CSTPCD

基金：国家自然科学基金联合基金项目(U1812402);国家自然科学基金青年科学基金项目(41802088);贵州省科技计划项目(黔科合平台人才-CXTD[2021]007,黔科合平台人才[2018]765);贵州省地质勘查资金项目(520000214TLCOG7DGTNRG)。

语种：中文

中文关键词：玄武岩容矿金矿;沉积岩容矿金矿;卡林型金矿;深部找矿勘查;黔西南;SBT

外文关键词：basalt-hosted gold deposits;sedimentary rock-hosted gold deposits;Carlin-type gold deposits;deep mineral exploration;Southwestern Guizhou;SBT

摘要：黔西南是中国著名的卡林型金矿集区,已查明金资源量约750 t,特别是近年来在该地区新发现了玄武岩容矿金矿,以架底大型金矿床、大麦地中型金矿床为典型代表,取得了新的找矿突破和认识,至此,该地区原生金矿容矿围岩主要有玄武岩和沉积岩两类。通过对黔西南玄武岩容矿金矿与沉积岩容矿金矿进行对比分析研究,认为:(1)卡林型金矿的定义可能存在一定局限性,需进一步拓展,黔西南玄武岩容矿金矿与沉积岩容矿金矿典型特征相似,可能形成于同一区域成矿事件,是同一区域岩浆热液成矿作用形成的卡林型金矿,在深部勘查与研究工作中应系统考虑;(2)构造(背斜、穹隆、断裂、SBT)+有利岩石组合(厚度大于100 m的碳酸盐岩与上覆厚度大于50 m的碎屑岩或玄武岩/凝灰岩)+Au-As-Sb-Hg-Tl组合异常+围岩蚀变(硅化、黄铁矿化、毒砂化),可能指示深部存在卡林型金矿;(3)玄武质岩石也是卡林型金矿很好的赋矿围岩,卡林型金矿容矿岩石、容矿地层具有多样性,几乎区内所有岩石和地层均可以成为卡林型金矿的容矿岩石和容矿地层,但具体到某一个特定的矿床时,往往有特定的就位地层和特殊的容矿围岩。
Southwestern Guizhou is a famous Carlin-type gold mineralization area in China,with a known gold resource of approximately 750 tons.In recent years,discoveries of basalt-hosted gold deposits have been made in this area,with the large-scale gold deposit,Jiadi,and the medium-sized gold deposit,Damaidi,as typical representatives,leading to breakthroughs and understanding in mineral exploration.The primary host rocks for native gold mineralization in this area are basalt and sedimentary rocks.Through comparative analysis and research of basalt-hosted gold deposits and sedimentary rock-hosted gold deposits in Southwestern Guizhou,the following conclusions are drawn:①The definition of Carlin-type gold deposits may have certain limitations and needs further expansion.Basalt-hosted gold deposits and sedimentary rock-hosted gold deposits in Southwestern Guizhou share similar typical characteristics and are the Carlin-type gold deposits resulting from the same regional magmatic fluid metallogenesis,and may have formed in the same regional metallogenic event.Therefore,they should be considered systematically in deep exploration and research work;②The combination of structures(anticlines,domes,faults,SBT)+favorable rock assemblages(carbonate rocks with a thickness greater than 100 m and overlying clastic rocks or basalt/tuff with a thickness greater than 50 m)+abnormal patterns of Au-As-Sb-Hg-Tl+alterations of surrounding rocks(silicification,pyrite mineralization,arsenopyrite mineralization),may indicate the presence of Carlin-type gold deposits at depth;③Basaltic rocks are also excellent host rocks for Carlin-type gold mineralization.The host rocks and host stratigraphy of Carlin-type gold deposits exhibit diversity,and almost all rocks and stratigraphy in the region can be considered host rocks and host stratigraphy for Carlin-type gold deposits.However,when it comes to a specific deposit,there are often specific in-situ stratigraphy and ore-bearing rocks.