Composition, structure, and properties of iron-rich nontronites of different origins

被引：8
|
作者：
Palchik, N. A. [1 ]
Grigorieva, T. N. [1 ]
Moroz, T. N. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia
来源：
CRYSTALLOGRAPHY REPORTS | 2013年 / 58卷 / 02期
关键词：
VIBRATIONAL SPECTROSCOPY; GARFIELD; SPECTRA; SEA;
D O I：
10.1134/S1063774513020193
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The composition, structure, and properties of smectites of different origins have been studied by X-ray diffraction, IR spectroscopy, scanning electron microscopy, and microprobe analysis. The results showed that nontronites of different origins differ in composition, properties, morphology, and IR spectroscopic characteristics. Depending on the degree of structural order and the negative charge of iron-silicate layers in nontronites, the shift of the 001 reflection to smaller angles as a result of impregnation with ethylene glycol (this shift is characteristic of the smectite group) occurs differently. The calculated values of the parameter b (from 9.11 to 9.14) are valid for the extreme terms of dioctahedral smectite representatives: nontronites.
引用
收藏
页码：302 / 307
页数：6
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