石英脉型钨多金属矿床的扇状成矿实例及找矿模型  

Fan-shaped case and exploration model of quartz vein-type tungsten polymetallic deposits

作　　者：方贵聪[1,2] 王登红[3] 黄长帅 杨富强 许以明 冯佐海[1,2] 李学彪 曾强 严长华 FANG GuiCong;WANG DengHong;HUANG ChangShuai;YANG FuQiang;XU YiMing;FENG ZuoHai;LI XueBiao;ZENG Qiang;YAN ChangHua(Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration,Guilin University of Technology,Guilin 541004,Guangxi,China;Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources By the Province and Ministry,Guilin University of Technology,Guilin 541004,Guangxi,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;China Nonferrous Metal Guilin Research Institute of Geology for Mineral Resources Co.,Ltd,Guilin 541004,Guangxi,China;Guangxi Zhuang Autonomous Region Institute of Geophysical Exploration,Liuzhou 545005,Guangxi,China;Mineral Resources Investigation Institute of Hunan Province,Changsha 410014,Hunan,China;Jiangxi Dajishan Tungsten Industry Co.,Ltd.,Quannan 341801,Jiangxi,China;Hunan Institute of Hydrogeology and Environmental Geology,Changsha 410131,Hunan,China)

机构地区：[1]广西隐伏金属矿产勘查重点实验室,桂林理工大学,广西桂林541004 [2]有色金属矿产勘查与资源高效利用省部共建协同创新中心,桂林理工大学,广西桂林541004 [3]中国地质科学院矿产资源研究所,北京100037 [4]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [5]广西壮族自治区地球物理勘察院,广西柳州545005 [6]湖南省矿产资源调查所,湖南长沙410014 [7]江西大吉山钨业有限公司,江西全南341801 [8]湖南省水文地质环境地质调查监测所,湖南长沙410131

出　　处：《矿床地质》2024年第3期613-628,共16页Mineral Deposits

基　　金：国家重点研发计划项目(编号:2021YFC2900100);广西自然科学基金项目(编号:2022GXNSFFA035025);国家自然科学基金项目(编号:42372099);中国地质调查局中国矿产地质志项目(编号:DD20221695);中国有色桂林矿产地质研究院有限公司创新基金(编号:KDYCXJJ202201)联合资助。

摘　　要：石英脉型钨矿床是中国数量最多的钨矿床类型,但保有储量消耗迅速,迫切需要创新找矿模型,指导找矿突破。文章结合二十余年的找矿实践,通过详细分析扇状成矿矿床实例,构建了石英脉型钨矿床新的找矿模型。该模型强调赋矿裂隙为岩浆动力成因,在花岗岩体顶部呈扇状分布型式,岩浆期后热液恰在裂隙张开时充填其中而形成扇状成矿系统;提出“就岩找矿”、“就矿找矿”、“就矿找岩”的地质、地球化学和地球物理标志,指导矿床尺度的勘查工程部署。截至目前,该模型已在广东禾尚田钨锡矿床、广西珊瑚钨锡矿床、广西社垌钨钼矿床、江西盘古山钨铋矿床等获得了验证,找矿成效显著。Quartz vein-type tungsten deposits are the most abundant types of tungsten deposits in China,yet the reserves are being rapidly depleted.There is an urgent need to innovate the exploration model to guide breakthroughs in finding new deposits.The article,which combines over two decades of exploration practice,constructs a new exploration model for quartz vein-type tungsten deposits through a detailed analysis of fan-shaped mineralization instances.This model emphasizes that the ore-bearing fractures are of magmatic dynamic origin and are distributed in a fan-shaped pattern at the top of the granite.The fan-shaped mineralization system is believed to have formed when post-magmatic hydrothermal fluids filled the fractures as they were opening.The model also proposes geological,geochemical,and geophysical indicators for"exploration around the granite","exploration around known deposits",and"exploration around the deposits for granite",guiding the deployment of exploration survey projects at the deposit scale.To date,this model has been validated in the Heshangtian WSn deposit in Guangdong Province,Shanhu W-Sn deposit and Shedong W-Mo deposit in Guangxi Province,as well as the Pangushan W-Bi deposit in Jiangxi Province,and has achieved remarkable results in exploration.

关 键 词：扇状成矿 成矿规律 找矿模型 花岗岩 石英脉型钨矿床 

分 类 号：P618.42[天文地球—矿床学]