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In situ Raman study of wairakite and dawsonite interaction with water at high PT parameters

  • S. V. GoryainovEmail author
  • A. S. Krylov
  • A. N. Vtyurin
  • A. Yu. Likhacheva
  • P. S. R. Prasad
Proceedings of the International Interdisciplinary Symposium “Ordering in Minerals and Alloys” OMA-18 and Proceedings of the International Interdisciplinary Symposium “Order, Disorder, and the Properties of Oxides” ODPO-18

Abstract

The behavior of wairakite CaAl2Si4O12 · 2H2O and dawsonite NaAlCO3(OH)2 in a water medium is studied by means of in situ Raman spectroscopy at the simultaneously high temperatures and pressures (up to T = 723 K and P = 1 GPa). After the initial minerals are partially dissolved, phillipsite forms in the wairakite–water system, and a glass-like phase is generated in the dawsonite–water system. These minerals show no signs of overhydration. The amorphization of the wairakite structure that occurs at high temperatures and pressures was reversible.

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Copyright information

© Allerton Press, Inc. 2016

Authors and Affiliations

  • S. V. Goryainov
    • 1
    Email author
  • A. S. Krylov
    • 2
  • A. N. Vtyurin
    • 2
  • A. Yu. Likhacheva
    • 1
  • P. S. R. Prasad
    • 3
  1. 1.Sobolev Institute of Geology and Mineralogy, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  2. 2.Kirensky Institute of Physics, Siberian BranchRussian Academy of SciencesKrasnoyarskRussia
  3. 3.National Geophysical Research InstituteCouncil for Scientific and Industrial ResearchHyderabadIndia

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