新疆尉犁水黑云母:定向X射线衍射研究  

HYDROBIOTITE FROM WEILI, XINJIANG: X-RAY DIFFRACTION FOR BASAL REFLECTIONS

作　　者：冉红彦[1] 王冠鑫[1] 曹俊臣[1] 

机构地区：[1]中国科学院广州地球化学研究所,广州510640

出　　处：《矿物学报》1999年第3期299-307,共9页Acta Mineralogica Sinica

摘　　要：用定向X射线衍射方法研究了产自新疆尉犁的两个水黑云母样品（Xj－1和Xj－2）。xj-1含有水黑云母和蛭石两种矿物，xj-2含有水黑云母和金云母两种矿物。两个样品中水黑云母的d001有所不同，它们的衍射峰形和行射强度与完全规则的水黑云母有一定的差异。根据图解法研究结果表明，在xj-1中观察到的水黑云母衍射数据实际上是大量水黑云母层与少量蛭石层不规则间层的结果，而在xj-2中观察到的水黑云母衍射数据实际上是大量水黑云母层与少量云母层不规则间层的结果。该水黑云母的d001、d002和d003与规则水黑云母的较大差异并不是仪器测量造成的，而恰恰提供了反映水黑云母中混人蛭石层或云母层的信息，因此在计算变异系数CV时至少不应将d002和d003轻易剔除掉。X-ray diffraction analysis for hasal reflectings way made on two flakes of hydrobiotite(xj-1 and xj-2 ) from Weili. Xinjiang. Sample xj-1 contains hydrobiotite and vermiculite. While sample xj-2 contains hydrobiotite and mica. The .d001 diffraction briadths and intensities can differentiate the two hydrobiotites from ordered hydrobiotite. It has been shown that the diffraction data of hydrobiotlte in xj-1 are actually those of disordered mixed-layer structure of a large amount of hydrohlotite and a small amount of vermiculite. that the diffraction data of hydrobiotite in xj-2 are actually those of disordered mixed-layer structure of a large amount of hydrobiotite and a small amount of mica The dgviatlons in d001, d002, and d003, of the two hydrobiotites from ordered hydrobiotite provide the most valuable information on ordering. It has been suggested that at least d002, and d003, cannot be omitted in the calculation of CV value.

关 键 词：水黑云母 定向X射线衍射 图解法 黑云母 

分 类 号：P578.959[天文地球—矿物学]