The biotitites of Ance and Vazeilles are included in dack factes of finite of Margeride in cental massif of France,their size are of about ten meters.
法国中央高原Margeride花岗岩暗色相中包含的Ance和Vazeilles黑云母岩,大小达数十米,分别会有40%和90%以上的黑云母及少量的磷灰石、锆石、斜长石或钾长石,且发现有变质岩包体。
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