可可托海3号伟晶岩脉中锂霞石和锂蒙脱石的发现  

DISCOVERY OF EUCRYPTITE AND SWINEFORDITE IN 3PEGMATITE VEIN,KEKETUOHAI DISTRICT,XINJIANG,CHINA

作　　者：范良明[1] 毛玉元[1] 万永文[1] 栾世伟[1] 

机构地区：[1]成都理工学院

出　　处：《矿物岩石》1994年第1期1-10,共10页Mineralogy and Petrology

摘　　要：本文所研究的锂霞石和锂蒙脱石为作者等首次在新疆可可托海３号伟晶岩脉中的叶钠长石－锂辉石带中发现。论文对这两个矿物的产状、形态、物姓、化学成分、Ｘ射线衍射谱、红外吸收谱、差热和热失重曲线、光吸收谱和矿物成因进行了详细研究。与国外样品比较，该锂霞石的特征是肉红色，晶体细小，锰含量较高，光吸收谱显示Ｍｎ￣（３＋）的宽吸收峰；锂蒙脱石的特征是桔红色，鳞片状，Ａｌ＿２Ｏ＿３含量较高和ＭｇＯ含量较低，红外吸收谱上ＯＨ吸收峰为３６３４ｃｍ￣（－１），差热曲线上的放热峰为９２８℃，光吸收谱上Ｍｎ￣（３＋）的宽吸收峰强度大。ucryptite and swinefordite researched in this paper were discovered for the first time in structure zones of the cleavelandite-spodumene of No 3 pegmatite vein,Keketuohai district,Xinjiang,China. In This paper the occurrence,shape,physical qualty,chemical composition,X-ray diffraction spectra,infrared absorption spectra,DTA and TG curves,absorption spectra and origin of the two minerals are researched in detail. Compared with abroad sample,the eucryptite has characteristics of red-flesh;very small crystal;higher in manganese content;wide absorption peak of Mn￣(3+) on absorption spectra. The swinefordite has characteristics of orange-red;scales;higher content in Al_2O_3 and lower content in MgO;absorption peak of OH on IR abeorption spec-tra is 3 634 cm￣(-1);giving out heat peak is 928℃ on DTA curves;wide absorption peak of Mn￣(3+) has big strength on absorption spectra.

关 键 词：锂霞石 锂蒙脱石 伟晶岩脉 

分 类 号：P588.13[天文地球—岩石学]