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世界上几种类型的层控矿床,包括阿帕拉契-加里东造山带的一些块状贱金属矿床,电气石均为其中一种重要的脉石矿物.沉积岩中的矿床,如伊丽沙白铜矿(美国弗蒙特州)和沃诺布铜矿(美国北卡罗来那州),电气石极为常见.美国布德蒙特和新英格兰地区和挪威的特龙黑姆地区的几个火山岩内的矿床中,也伴生有微量电气石. 电气石以褐色、绿褐色或褐黑色的浸染状、凝块状和裂隙充填状产在块状硫化物内和其附近围岩内,有的地区(伊丽沙白)含有一些主要为叶片状的电气石层.显微探针和X射线分析表明,这些电气石是一些富镁的镁电石.其成分不同于长英质深成岩
Several types of stratiform ore deposits in the world, including some massive base metal deposits in the Appalachian-Caledonian orogenic belt, are one of the most important gangue minerals. Deposits in sedimentary rocks such as Eliza Tourmaline is most commonly found in the chalcopyrite (Vermont, USA) and the Warnob copper mine (North Carolina, USA) within several volcanic rocks in the United States of America in Bedmont and New England and the Trondheim in Norway Of the deposits, but also associated with a trace of tourmaline tourmaline to Brown, green brown or brown black disseminated, clot-like and fissure filled in the massive sulphide and its surrounding rock, and some areas ( Elisha) contains some predominantly leaf-like tourmaline layers, and microscopic probes and X-ray analysis indicate that these tourmaline are magnesium-rich magnesium-calcined steranes whose composition is different from that of felsic-plutonic rocks