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与碱性岩体有关的稀土、钽、铌、钡、氟和铁的综合热液矿床具有重要的经济意义。但是,对这些矿体的蚀变围岩建造-相系统、矿石成份以及形成条件等的研究还不够充分。因此,相当迫切需要取得有关这些问题的新资料。作者详细地研究了越南北部区域内凡西潘岩体接触面上稀有金属一稀土元素复合矿化作用。本文论述与霓岩正长杂岩有关的碱性交代岩,其中包括镁水白云母建造中独特的交代岩。根据众多研究者(Рундквист等)的意见,镁水白云母岩的特征之一是 Mo、Cu-Mo、
Synthetic hydrothermal deposits of rare earth, tantalum, niobium, barium, fluorine and iron related to alkaline rocks have important economic significance. However, the research on the alteration of the surrounding rock of these orebodies is not enough for the study of the formation system, ore composition and formation conditions. Therefore, there is an urgent need to obtain new information on these issues. The authors studied in detail the rare earth-rare earth element mineralization at the contact surface of Fan Xipan in northern Vietnam. This article deals with alkaline metamorphic rocks associated with the Niyan normal burgeites, including the unique metasomatites in the construction of muscovite muscovite. According to the opinion of many researchers (Рундквист et al.), One of the features of magnesia muscovites is Mo, Cu-Mo,