摘要
稀有金属伟晶岩主要分为LCT(Li-Cs-Ta)型和NYF(Nb-Y-F)型,其中LCT型伟晶岩是全球重要锂矿来源。本文分析了全球伟晶岩型锂矿床的地质勘查和研究成果,简要介绍了各大陆代表性伟晶岩型锂矿床,发现锂矿空间分布不均匀,成矿时间具有多期性和阶段性,成矿事件主要发生在汇聚造山作用的晚期,伴随超大陆汇聚事件。LCT型伟晶岩富含挥发分,与后碰撞S型花岗岩密切相关,多产于中高级变质岩区,就位深度较大,多沿断裂构造贯入。
The pegmatites containing rare metals are classified into LCT(Lithium-Cesium-Tantalum)and NYF(Niobium-Yttrium-Fluorine)types,with the LCT type being the world’s most important source of lithium.In this contribution we review the global progress in geological exploration and study of the pegmatite-type lithium deposits,and briefly introduce representative deposits from different continents.It is noted that the pegmatite-type lithium deposits are heterogeneous spatial distribution.Temporally,the mineralization shows multistage and episodic features.Most of the LCT-type pegmatites were formed during late-stage of the convergent orogenies,and possibly associated with the supercontinent assembly.The LCT pegmatites are generally enriched in volatile components,genetically related to post-collisional S-type granites,spatially hosted in metamorphic rocks,and deeply seated along fault structures.
作者
陈衍景
薛莅治
王孝磊
赵中宝
韩金生
周可法
CHEN Yanjing;XUE Lizhi;WANG Xiaolei;ZHAO Zhongbao;HAN Jinsheng;ZHOU Kefa(MOE Key Laboratory of Crustal and Orogenic Evolution,Peking University,Beijing 100871,China;School of Earth Sciences and Engineering,Nanjing University,Jiangsu 210023,China;Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China;Faculty of Earth Resources,China University of Geosciences,Wuhan,Hubei 430074,China;Xinjiang Mineral Resources Research Center,Chinese Academy of Sciences,Urumqi,Xinjiang 830000,China)
出处
《地质学报》
EI
CAS
CSCD
北大核心
2021年第10期2971-2995,共25页
Acta Geologica Sinica
基金
国家自然科学基金项目(编号41630313,U1803242,U1906207,42173068)联合资助的成果。
