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Low-temperature infrared spectroscopic study of OH-stretching modes in kaolinite and dickite

  • Etienne Balan EMAIL logo , Simon Delattre , Maxime Guillaumet and Ekhard K.H. Salje
Published/Copyright: April 2, 2015
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American Mineralogist
From the journal American Mineralogist Volume 95 Issue 8-9

Abstract

The powder-transmission infrared spectra of OH-stretching modes in well-ordered samples of kaolinite and dickite are recorded from 270 to 10 K. Effective medium modeling of the kaolinite spectrum confirms the coupled motion of non-equivalent OH groups in the inter-layer OH-stretching modes. A full assignment of OH-stretching bands in dickite is proposed. In particular, the band observed at 3685 cm-1 in room-temperature spectra is attributed to a kaolinite-like defect, whereas that at 3706 cm-1 is related to OH3 groups of the dickite structure. The changes in phonon frequency and line shape are analyzed as a function of temperature. The results evidence the quasi-harmonic nature of the OH-stretching modes in kaolinite-group minerals. Coupling of OH-stretching modes to each other can be related to the macroscopic electrostatic properties of the composite medium, made of mineral particles and KBr matrix, and not to microscopic anharmonic mechanisms. The low saturation temperatures of vibrational frequencies and linewidths indicate that the OH-stretching modes probe the average thermal bath of the crystal, without coupling to a specific decay channel

Keywords: Infrared spectroscopy; kaolinite; dickite; thermodynamic; phonons
Received: 2009-11-5
Accepted: 2010-4-18
Published Online: 2015-4-2
Published in Print: 2010-8-1

© 2015 by Walter de Gruyter Berlin/Boston

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https://doi.org/10.2138/am.2010.3447
Keywords for this article
Infrared spectroscopy; kaolinite; dickite; thermodynamic; phonons

Articles in the same Issue

  1. Resonant X-ray emission study of the lower-mantle ferropericlase at high pressures
  2. Uranyl phosphate sheet reconstruction during dehydration of metatorbernite [Cu(UO2)2(PO4)2·8H2O]
  3. Detection of structurally bound hydroxyl in fluorapatite from Apollo Mare basalt 15058,128 using TOF-SIMS
  4. Quantum-mechanical evaluation of Np-incorporation into studtite
  5. Electronic structure and local environment of substitutional V3+ in grossular garnet Ca3Al2(SiO4)3: K-edge X-ray absorption spectroscopy and first-principles modeling
  6. Elbrusite-(Zr)—A new uranian garnet from the Upper Chegem caldera, Kabardino-Balkaria, Northern Caucasus, Russia
  7. What drives the distribution in nature of 3T vs. 2M1 polytype in muscovites and phengites? A general assessment based on new data from metamorphic and igneous granitoid rocks
  8. Radiation damage and uranium concentration in zircon as assessed by Raman spectroscopy and neutron irradiation
  9. The Cr X-ray absorption K-edge structure of poorly crystalline Fe(III)-Cr(III)-oxyhydroxides
  10. Protracted oceanic subduction prior to continental subduction: New Lu-Hf and Sm-Nd geochronology of oceanic-type high-pressure eclogite in the western Dabie orogen
  11. Time-resolved in situ studies of apatite formation in aqueous solutions
  12. X-ray Rietveld and 57Fe Mössbauer studies of epidote and piemontite on the join Ca2Al2Fe3+Si3O12(OH)–Ca2Al2Mn3+Si3O12(OH) formed by hydrothermal synthesis
  13. Elastic behavior of zeolite boggsite in silicon oil and aqueous medium: A case of high-pressure-induced over-hydration
  14. Low-temperature infrared spectroscopic study of OH-stretching modes in kaolinite and dickite
  15. Stability field of the high-temperature orthorhombic phase in the enstatite-diopside system
  16. Unique crystal chemistry of two polymorphs of topaz-OH: A multi-nuclear NMR and Raman study
  17. Crystal chemistry of chromian pumpellyite from Osayama, Okayama Prefecture, Japan
  18. Toturite Ca3Sn2Fe2SiO12—A new mineral species of the garnet group
  19. The structure of schwertmannite, a nanocrystalline iron oxyhydroxysulfate
  20. Crystal chemistry of Cr-spinels from the lherzolite mantle peridotite of Ronda (Spain)
  21. Lead-tellurium oxysalts from Otto Mountain near Baker, California: I. Ottoite, Pb2TeO5, a new mineral with chains of tellurate octahedra
  22. Lead-tellurium oxysalts from Otto Mountain near Baker, California: II. Housleyite, Pb6CuTe4O18(OH)2, a new mineral with Cu-Te octahedral sheets
  23. The behavior of the Hf isotope system in radiation-damaged zircon during experimental hydrothermal alteration
  24. Letter. Crystal structure of a new high-pressure polymorph of topaz-OH
  25. Letter. In situ 238U-230Th disequilibrium dating of pyrochlore at sub-millennial precision
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