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伟晶岩
伟晶岩(英语:pegmatite)因为其经常含有大粒晶体而得名,具有粗粒或巨粒结构,粒径通常超过10毫米,晶体最大可以达到数米甚至十米以上长,一般颜色较浅,是一种浅成岩,但常产于深成岩的体内或周围,其包含的晶体经常是有价值的矿物,对于其产生的 ...
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