新疆尉犁蛭石的物相组成  

Phase Compositions of Vermiculite from Yuli of Xinjiang

作　　者：霍小旭[1] 王丽娟[1] 廖立兵[1] 

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《硅酸盐学报》2011年第9期1517-1522,共6页Journal of The Chinese Ceramic Society

基　　金：国家科技支撑计划(2008BAE60B07)资助项目

摘　　要：为了进一步提高新疆尉犁蛭石的应用价值,用X射线衍射、红外光谱分析、差热-热重分析和化学成分分析法研究新疆尉犁蛭石的物相组成。结果表明:蛭石矿中存在混层比不同的两种蛭石-云母混层矿物,确定蛭石与云母晶层比分别为6:4和4:6,且均非严格地规则混层;样品中的云母和云母晶层以金云母为主,蛭石为Mg型和Na型蛭石。用基体清洗法(K值法)计算样品中各物相质量分数为:蛭石1.21%、金云母49.96%、蛭石-金云母混层矿物Hy-a(蛭石与云母晶层比为6:4)11.72%、蛭石-金云母混层矿物Hy-b(蛭石与云母晶层比为4:6)27.82%、方解石9.30%。In order to enhance the value of vermiculite from Yuli,Xinjiang,and phase compositions of the vermiculite were investi-gated by X-ray diffraction,infrared spectroscopy,thermogravimetric–differential thermal analysis,and chemical analysis.Results indicate that sample contain two types of vermiculite–mica mixed-layer minerals with vermiculite/mica mole ratios of 6：4 and 4：6,respectively.Neither of these two mixed-layer minerals is strictly regular in structure.Phlogopite is identified as the main type of mica and mica layer in mixed-layer minerals,and the two types of vermiculite are Mg-vermiculite and Na-vermiculite.X-ray diffrac-tion matrix flushing analysis（K value method） shows that the contents of vermiculite,mica,vermiculite–mica mixed-layer mineral Hy-a（vermiculite/mica mole ratio of 6：4）,vermiculite–mica mixed-layer mineral Hy-b（vermiculite/mica ratio of 4：6）,and calcite are 1.21%,49.96%,11.72%,27.82%,and 9.30%,respectively.

关 键 词：蛭石 金云母 混层矿物 物相组成 

分 类 号：P575.569[天文地球—矿物学]