title: A Fifth OH-Stretching Band in IR Spectra of Kaolinites.
abstract: Transmission infrared spectra of different kaolinites were studied by curve fitting. These spectra generally exhibit four hydroxyl stretching bands. In this article we show that a fifth OH band (already identified in Raman and photoacoustic IR spectra of kaolinites) is also observed in transmission IR spectra of hydrothermal and authigenic kaolinites, which have a high degree of crystallinity. This additional band is weak or undetectable for kaolinites with a low degree of crystallinity. Copyright 1999 Academic Press.
authors: Geology Group, The Open University of Israel, Tel-Aviv, 61392, Israel
authors: S
authors: Shoval
authors: S
authors: Yariv
authors: KH
authors: Michaelian
authors: I
authors: Lapides
authors: M
authors: Boudeuille
authors: G
authors: Panczer