华南石英脉型钨矿床扇状成矿的规律及其找矿意义  

The Fan-like Distribution of Ore Veins in the Quartz-vein Type Tungsten Deposits in South China and its Prospecting Significance

作　　者：方贵聪 王登红[2] 冯佐海 付伟 康志强 吴家旭 赵云彪 童启荃 杨明 FANG Guicong;WANG Denghong;FENG Zuohai;FU Wei;KANG Zhiqiang;WU Jiaxu;ZHAO Yunbiao;TONG Qiquan;YANG Ming(Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration,College of Earth Science,Guilin University of Technology,Guilin 541004,Guangxi,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;Jiangxi Pangushan Tungsten Co.,Ltd.,Yudu 342311,Jiangxi,China)

机构地区：[1]桂林理工大学地球科学学院,广西隐伏金属矿产勘查重点实验室,广西桂林541004 [2]中国地质科学院矿产资源研究所,北京100037 [3]江西盘古山钨业有限公司,江西于都342311

出　　处：《大地构造与成矿学》2021年第3期523-533,共11页Geotectonica et Metallogenia

基　　金：国家自然科学基金项目(41802082);中国地质调查局中国矿产地质志项目(DD20190379);广西自然科学基金项目(2020GXNSFAA159154、2020GXNSFGA297003、2019GXNSFDA245009);广西找矿突破战略行动项目(桂自然资函(2020)1639号)联合资助。

摘　　要：钨是中国、美国、英国、欧盟等国家的战略性关键矿产,如何在已知矿区外围寻找新的钨矿资源是当前找矿工作面临的一大难题。本文通过广泛调研钨矿床野外地质事实及基础地质资料,指出江西茅坪、东坪、淘锡坑,广西社垌,广东梅子窝等石英脉型钨矿床具有扇状成矿的规律,即于花岗岩体顶部形成两组相向倾斜的“双胞胎”矿脉,横剖面呈扇状。扇状容矿裂隙系统可能是在花岗岩浆主动上侵动力、区域水平构造应力、岩层自身重力等联合作用下形成的。此规律对于在已知矿脉组外围寻找与之相向倾斜的另一矿脉组具有重要指导意义,以江西盘古山钨矿床为例,推断矿区内除了3组已知南倾矿脉之外,还可能发育另外三组北倾矿脉。Tungsten is classified as a kind of strategic and critical mineral resource in China,America,England,and European Union.The ways to find new ore veins/bodies in the known tungsten deposits is a matter of great concern.Based on extensive field geological investigation and exploration results of the tungsten deposits,we point out that the tungsten deposits are commonly characterized by fan-like distribution of ore veins at the top of the granites.The fan-shaped ore hosting structures may result from a multiplicity of regional tectonic stress,granitic magma emplacement power,hydraulic pressure and overlying strata gravity.The fan-shaped distribution of ore veins in the quartz vein-type tungsten deposits will provide scientific guidance for prospecting of concealed ore veins in the known tungsten deposits.In addition to the known three groups of south dipping ore veins in the Pangushan tungsten deposit,Jiangxi province,it is predicted that there are possibly three groups of north dipping ore veins.

关 键 词：石英脉型钨矿床 扇状成矿的规律 容矿裂隙系统 花岗岩体 华南 

分 类 号：P613[天文地球—矿床学]