中文摘要：

通过显微镜、扫描电镜（SEM／EDS）、电子探针（EPMA）等研究手段，对赣南茅坪钨矿伟晶岩型矿石中的云母开展了详细的矿物学研究。研究结果表明：这类云母具有富A1、K、Li，贫Mn、Ta、Mg、Ca，挥发性组分F质量分数较高等特征；随着岩浆演化，茅坪伟晶岩中的云母成分发生变化，由富锂多硅白云母向铁锂云母方向演化；茅坪伟晶岩中的云母经历了岩浆热液过渡阶段，因受后期热液的交代作用普遍发育复杂环带结构；另外，伟晶岩中的云母具有高F的特征，说明体系中F的质量分数很高，在岩浆演化过程中，F趋向于在残余岩浆中富集，这有利于岩浆的高度演化和稀有金属的富集。

英文摘要：

Maoping tungsten deposit is a large W-Sn-polymetallic deposit in southern Jiangxi Province. By means of microscope, SEM/EDS and EPMA , the authors studied the occurrence and chemical composi- tions of micas in the Maoping pegmatite type tungsten deposit of southern Jiangxi. The result showed that all the micas are characterized by rich AI, K and Li and the volatile constituent F, poor Mn, Ta,Mg and Ca. Micas associated with the pegmatite type tungsten deposit are highly variable. The component of micas changed in the evolution sequence of ＂Li phengite → zinnwaldite＂. Micas in pegmatite rocks have experi- enced magma hydrothermal transition. Due to the fluid metasornatism, the zoning micas are ubiquitous in the Maoping pegmatite. Micas in the pegmatite are characterized by rich F, showing that the content of F is very high in the system. With the evolution of magma, fluorine is strongly incorporated into late-differ- entiated melts, which is conducive to the highly evolved magma and rare metal enrichment.