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云母早已是工业生产稀碱金属的来源.在五十年代,美国从锂云母中提取铯、铷和锂;还有一些国家则从铁锂云母或锂云母贫矿石中用化学冶炼方法直接提取这些元素.远在三十年代,赫斯和费赫就确定了美国南达科塔伟晶岩中的黑云母含铯非常高(Cs_2O 3.12%).作者于五十年代初,在研究某些稀有金属花岗伟晶岩时多次遇到产于含角闪石岩石中的岩脉,在其外按触带上次生黑云母广泛发育.黑云母化很久前就是一种可靠的找矿标志,尤其是在详细勘探阶段更是如此.但是,只是在近几年,随着从矿物原料中提取稀有元素的化学冶炼方法的发展,铯黑云母才引起了人们的注意,它可能成为稀碱金属的来源.近来,在苏联欧洲部分和西伯利亚发现了几个
Mica has long been a source of industrial production of dilute alkali metals. In the 1950s, the United States extracted cesium, rubidium and lithium from lepidolite, while others extracted them directly from lepidolite or lepidolite using chemical smelting methods Elements.As far back as the 1930s, Hess and Feht determined that the biotite cesium in the South Dakota, United States, is very high (Cs 2 O 3.12%). In the early 1950s, Metamorphic pegmatite met the dikes frequently found in amphibole-bearing rocks, and the secondary biotite developed extensively along the strike belt. Biotitization was a reliable indicator of prospecting for a long time , Especially during the detailed exploration phase, but only in recent years has cesium biotite been brought to the attention of the public with the development of chemical smelting methods for the extraction of rare elements from mineral raw materials, which may become dilute alkali Sources of metals. Recently, several were discovered in the European part of the Soviet Union and in Siberia