dravite schorl黑色电气石
What this thesis focuses is Dravite from Hebei, Schorl from Xinjiang and Elbaite from Yunnan, they are all occurring in pegmatites.
本文的主要研究对象是河北镁电气石,另外还对新疆铁电气石和云南锂电气石进行了对比研究,三种电气石均产于伟晶岩。