伟晶岩是一种与各类深成岩在成因上有密切联系的粗粒至巨粒的岩脉状或团块状岩体。
它们产于富含暗色岩和伟晶岩的古老地盾区内。
The deposits occur in the old shield which is rich in dark rocks and pegmatites.
东湖伟晶岩矿床为花岗质完全分异式伟晶岩类型；
Donghu pegmatite deposit is characterized by granitic and completely differential pegmatite.
霞石为典型的碱性矿物，主要生成于碱性岩及其伟晶岩中。
Nepheline is a typical kind of alkaline mineral, which forms mainly in alkaline deposit and its pegmatite.
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