Behavior of CaBSiO4(OH) datolite at high temperatures and pressures of a water medium

  • S. V. GoryainovEmail author
  • A. S. Krylov
  • A. N. Vtyurin
  • Yu. Pan


The behavior of CaBSiO4(OH) datolite compressed in a water medium at simultaneous high temperatures and pressures corresponding to the cold zones of tectonic plate subduction (up to P ~5.3 GPa and T ~250°C) is studied in situ via Raman spectroscopy. Two polymorphic transitions are found: (i) upon an increase of up to 2 GPa in pressure at a constant temperature of 22°C and (ii) upon heating to ~90°C at a constant pressure of ~5–5.3 GPa. Major trends of the variations in the Raman spectra are identified for all phases of the indicated P–T parameters. No overhydration and amorphization of datolite is observed.


Raman Spectrum Phase Transition Subduction Zone Raman Band Water Medium 
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Copyright information

© Allerton Press, Inc. 2015

Authors and Affiliations

  • S. V. Goryainov
    • 1
    Email author
  • A. S. Krylov
    • 2
  • A. N. Vtyurin
    • 2
  • Yu. Pan
    • 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.University of SaskatchewanSaskatoonCanada

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