期刊
APPLIED CLAY SCIENCE
卷 95, 期 -, 页码 383-387出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2014.02.010
关键词
FTIR; Fibrous clays; Micas; 10 high resolution minerals; Chlorites; Kaolin group minerals
Aspects of clay mineralogy can be determined by the use of near-infrared (NIR) spectra. Beginning with fibrous clay minerals, the combination band spectra do not change position with changes in metal oxide content. Other clay mineral spectra were compared to determine whether this is unusual. These include NIR spectra of chlorite, micas and their alteration products, montmorillonites, and the kaolin group of clay minerals. None are fixed as sepiolite and palygorskite are. For all clay mineral IR spectra only the fibrous clay mineral spectra are fixed. The correlation of the OH fundamental and first overtone OH spectral wave numbers are a constant of 1.955. The kaolin group is readily differentiated by their combination band spectra, such as kaolinite and dickite. (C) 2014 Elsevier B.V. All rights reserved.
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