This paper introduces performance of the micaceous sandrock, and discusses the structure feature of biotite, and sets forward that after being separated mica from the ores the sand can be used as building sand.
介绍了云母砂矿的性质，探讨了黑云母的结构特性，提出了通过分离云母砂矿，既可满足建材生产用砂的要求，又可用来研制农用钙镁钾肥、混合肥等，可使劣质云母砂矿资源得到很好的开发利用。
According to petrologic analysis of 18 samples of altered rock, phlogopite rock, with regard to its B 2O 3 content, it is generally restricted to the outside of the ore bed, having certain ties with the boron minerlization while no ties are found in altered rock of the same type associated with veins of diorite porphyrite.
其中金云母岩多分布在含矿层外带 ,通过对 1 8件金云母岩样品中B2 O3含量分析 ,表明正常蚀变岩中的金云母岩与硼矿有一定的关系 ,而由闪长玢岩脉体侵入影响下形成的金云母岩则与矿化无关。
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。