腾冲火山岩矿物化学研究  

MINERAL CHEMISTRY OF THE VOLCANIC ROCKS IN TENGCHONG,CHINA

作　　者：周真恒[1] 向才英[1] 姜朝松[1] 杨海林[2] 

机构地区：[1]云南省地震局,昆明650041 [2]昆明理工大学,昆明650093

出　　处：《地震研究》2000年第2期201-214,共14页Journal of Seismological Research

基　　金：云南省科技攻关项目

摘　　要：通过电子探针分析 ,系统研究了腾冲火山岩 10 5个造岩矿物的化学成分。研究表明 :本区熔岩中的橄榄石为贵橄榄石兼少量透铁橄榄石 ,斜方辉石为古铜辉石兼紫苏辉石 ,单斜辉石为普通辉石兼少量镁质透辉石 ,斜长石为拉长石兼部分中长石和少量更长石 ,角闪石为低铁韭闪质普通角闪石 ,黑云母为钛铁黑云母兼富铁黑云母。In this paper, the chemical compositions of 105 rock-forming minerals of the volcanic rocks in Tengchong have been determined by the microprobe and systematically studied. This indicates that in the lavas chrysolites predominate, together with a few hyalosiderites; for the orthopyroxenes, bronzites predominate, together with a few hypersthenes; for the clinopyroxenes, augites predominate, together with a few enstatite diopsides; labraclorites and part andesines predominate, together with a few oligoclases; the hornblendes are the ferrian pargasitic ones and the biotites both titano-ferrobiotites and ferrobiotites

关 键 词：化学成分 造岩矿物 火山岩 腾冲地区 

分 类 号：P588.4[天文地球—岩石学]