贵州省黔西县大寨地区中三叠统关岭组绿豆岩矿物学特征  

Mineralogical characteristics of mung bean rock of the Middle Triassic Guanling Formation at Dazhai area in Qianxi County,Guizhou

作　　者：赵飞 何碧 张志玺 王宁祖 孙平原 ZHAO Fei;HE Bi;ZHANG Zhixi;WANG Ningzu;SUN Pingyuan(The Second Institute Geological and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Resources Exploration,Lanzhou 730020,Gansu,China)

机构地区：[1]甘肃省地质矿产勘查开发局第二地质矿产勘查院

出　　处：《矿产与地质》2019年第4期642-649,共8页Mineral Resources and Geology

基　　金：中国地质调查局成都地质调查中心地质调查项目“乌蒙山区地质矿产综合调查”二级项目之子项目“贵州乌蒙山区1∶5万店子场（G48E006018）、大关（G48E007017）、六厂（G48E007018)3幅区域地质调查”（编码：DD20160019-04）共同资助

摘　　要：采集了贵州省黔西县大寨地区的中三叠统关岭组松子坎段底部绿豆岩4件样品,运用显微鉴定、X射线衍射、红外光谱、差热和热重分析、扫描电镜与能谱分析方法,对绿豆岩黏土矿物进行准确定性定量分析。研究表明,绿豆岩主要矿物为伊利石、蒙脱石、伊利石/蒙脱石混层矿物及少量石英、绿泥石,豆粒主要矿物为方解石、石英、伊利石。Four mung bean samples are collected from the outcrop of mung bean rocks at the Middle Triassic Guanling Formation at Dazhai area in Qianxi County,Guizhou Province.By the microscopic identification,X-ray diffraction analysis,infrared spectroscopy analysis,DTA/TG analysis,SEM and energy spectrum analysis,the mung bean rock is analyzed for the qualitative and quantitative contents of the clay minerals.The study result indicates that the minerals of mung bean rock are mainly illite,montmorillonite,Illite/montmorillonite mixed mineral,and minor quartz and chlorite.The pisolite portion consists mainly of calcite,quartz and illite.

关 键 词：绿豆岩 矿物学 中三叠世 关岭组 大寨地区 贵州 

分 类 号：P575[天文地球—矿物学]