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鉴于在一些伟晶岩区发现巨大的含铯黑云母交代岩带,人们对于这些生成物的成因提出了各种不同的见解。一些研究者认为,黑云母交代岩是在稀有金属伟晶岩对围岩层的作用下形成的外接触岩。另一些研究者则认为,含铯黑云母岩是由于强烈碱性交代作用的结果形成的,这种碱性交代作用与稀有金属伟晶岩的影响无关(相反,伟晶岩是在碱性交代作用末期形成的)。笔者们为第三种意见,认为在个别地区除了外接触黑云母交代岩外,还见有在空间上与伟晶岩无关
In view of the discovery of huge cesium-bearing biotites in some pegmatite areas, various opinions have been put forward on the genesis of these formations. Some researchers believe that biotite metamorphic rocks are external contact rocks formed by the action of rare metal pegmatites on the surrounding rock. Others argue that cesium-containing biotite rocks are formed as a result of a strong alkaline metasomatism that is not related to the effect of the rare metal pegmatite (in contrast, pegmatites are formed during alkaline caustic Role of the end of the formation). The third opinion is that the authors believe that in addition to external contact with biotite in some areas, there is also space-related pegmatism