含铯黑云母是铯的新原料,见于基性岩(角闪岩)当中的锂辉石伟晶岩周围,赋存在区域构造带内。含铯黑云母生成条件的特点是构造活化的程度增高。在伟晶岩的外接触带内,常见角闪岩的黑云母化。伟晶岩附近的黑云母富含希有碱金属,含Cs_2O达6～8％。有人认为,这种岩石的形成与铯从伟晶岩中的带出以及伟晶岩与围 Cesium-containing biotite is a new raw material of cesium, found in the basic rock (amphibolite) among the spodumene pegmatite around, located in the regional structural belt. The formation of cesium-bearing biotite is characterized by the increased degree of structural activation. In the outer contact zone of pegmatite, biotitization of the common amphibolite is observed. Biotite near the pegmatite is rich in Greek alkali metal, containing Cs_2O up to 6 ~ 8%. Some people think that this rock formation and cesium from the pegmatite and pegmatite Wai