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Clays and Clay Minerals

, Volume 37, Issue 5, pp 464–468 | Cite as

Infrared Study of Structural OH in Kaolinite, Dickite, Nacrite, and Poorly Crystalline Kaolinite at 5 to 600 K

  • R. Prost
  • A. Dameme
  • E. Huard
  • J. Driard
  • J. P. Leydecker
Article

Abstract

The resolution of the infrared spectra of structural OH in kaolin-group minerals increases with decreasing temperature. Poorly crystalline kaolinite gives typical infrared spectra, which suggest the existence of kaolinite-, dickite-, and nacrite-like configurations. The relative amount dickite- and nacrite-like configurations compared with kaolinite-like configurations increases with decreasing crystallinity. Low-temperature infrared spectroscopy is a more sensitive means of estimating the degree of order of poorly crystalline kaolinite than is X-ray powder diffraction.

Key Words

Crystallinity Dickite Infrared spectroscopy Kaolinite Nacrite X-ray powder diffraction 

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Copyright information

© The Clay Minerals Society 1989

Authors and Affiliations

  • R. Prost
    • 1
  • A. Dameme
    • 1
  • E. Huard
    • 1
  • J. Driard
    • 1
  • J. P. Leydecker
    • 1
  1. 1.Station de Science du SolInstitut National de la Recherche AgronomiqueVersaillesFrance

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