华南火山岩型、花岗岩型热液铀矿共性特征与形成机制  

Common Characteristics and Formation Mechanism of Volcanic Rock Type and Granite Type Hydrothermal Uranium Deposits in South China

作　　者：林锦荣[1] 李子颖[1] 胡志华[1] 兰青 王勇剑[1] 陶意 刘政国 LIN Jinrong;LI Ziying;HU Zhihua;LAN Qing;WANG Yongjian;TAO Yi;LIU Zhengguo(CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,Guizhou 550081,China;CGN Uranium Industry Development Co.,Ltd.,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院中核集团铀资源勘查与评价技术重点实验室,北京100029 [2]中国科学院地球化学研究所,贵州贵阳550081 [3]中广核铀业发展有限公司,北京100029

出　　处：《铀矿地质》2023年第1期1-15,共15页Uranium Geology

基　　金：国家重点研发计划项目(编号:2017YFC0602600、2017YFC0602601);国家自然科学基金面上项目(编号:41573051)联合资助。

摘　　要：文章通过相山矿田火山岩型、诸广地区花岗岩型热液铀矿成矿特征、成矿流体成分、成矿条件、成矿时代、铀矿成因、控矿因素等综合对比研究,总结了华南火山岩型、花岗岩型热液铀矿成矿的异同,认为火山岩型与花岗岩型热液铀矿具有相似的成矿特征、相似的成矿流体成分、相似的成矿条件、相近的成矿时代、相同的成因、相似的控矿因素等共性特征,热液型铀矿成矿具有深源性,深源成矿流体为还原性成矿流体;火山岩型、花岗岩型热液铀矿差异性特征主要表现在围岩成分的不同,蚀变元素组合和成矿元素组合的差异性;火山岩型、花岗岩型热液铀矿同属于华南中-新生代岩浆作用、构造活动、热液铀成矿系统,铀成矿作用形成于华南中-新生代统一的深部地球动力学大地构造背景,具有统一的形成机制。Based on the comprehensive comparison on the metallogenic characteristics, fluid composition,metallogenic conditions, metallogenic epoch, uranium genesis, ore control factors of Xiangshan volcanic rock type and Zhuguang granite type hydrothermal uranium deposits, the similarities and differences between volcanic rock type and granite type hydrothermal uranium deposits were summarized. It was recognized that volcanic rock type and granite type hydrothermal uranium deposits were similar in metallogenic characteristics, fluid composition, and metallogenic conditions, metallogenic epoch, ore controlling factors,genesis and other characteristics, which were the product of hydrothermal uranium mineralization with deep source and ore-forming fluid of reductivity. The difference between volcanic rock type and granite type hydrothermal uranium deposits is wall rock composition, the difference of altered element association and oreforming element association. It was believed that volcanic rock type and granite type hydrothermal uranium deposits belong to the Mesozoic-Cenozoic magmatism, tectonic activity and hydrothermal uranium mineralization system in South China. Uranium mineralization was formed in the unified deep geodynamic geotectonic background of the Mesozoic-Cenozoic in South China, with a unified formation mechanism.

关 键 词：火山岩型铀矿 花岗岩型铀矿 共性特征 形成机制 深源性 

分 类 号：P619.14[天文地球—矿床学]