云母族矿物八面体化学成分与层面X射线衍射特征  

Relation between Octahedral Composition and X-ray Diffraction Characterization Projected onto Lay for Mica

作　　者：徐钿[1] 王冠鑫[2] 

机构地区：[1]武汉理工大学理学院,湖北武汉430070 [2]中国科学院广州地球化学研究所广东省矿物物理和材料研究开发重点实验室,广东广州510640

出　　处：《分析测试学报》2003年第3期54-56,共3页Journal of Instrumental Analysis

摘　　要：运用粉末晶体结构分析的原理 ,从白云母、金云母和黑云母3种矿物的X射线粉末衍射图中得出云母族矿物的层面衍射强度变化与八面体化学成分改变的规律 ;利用相对衍射强度I002/I003 将二八面体型云母与三八面体型相区分 ,用相对强度I004/I003 分析三八面体型云母八面体中成分的变化。A method for identifying octahedral composition from XRD data for mica is reported. According to X _ ray powder crystal structure analysis for three species of mica(muscovite, phlogopite and biotite), the relationship between the chemical compositions in octahedron and diffraction intensities projected onto lay of mica was obtained. The dioctahedral and trioctahedral type of mica could be distinguished using relative intensity of I002 /I003. The compositions in octahedron for trioctahedral type of mica could be determined using I004 /I003.

关 键 词：云母族矿物 八面体 化学成分 X射线衍射 层面衍射强度 铝硅酸盐矿物 晶体结构 

分 类 号：P578.94[天文地球—矿物学] P575.5[天文地球—地质学]