Stability of hydrous magnesium silicates in the mantle transition zone

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148 Citations (Scopus)


Phase relations in the Mg(OH)2SiO2 system have been studied up to 18 GPa. A new hydrous phase (phase E: Mg2.3Si1.3H2.4O6) was encountered at 13-17 GPa and 1000°C. Phase F (Mg1.2Si1.8H2.4O6), another new hydrous phase, was observed at 15.5 GPa and 800°C. The stability field of phase A was also briefly studied. These new hydrous phases might be stabilized in the mantle transition zone, especially in subducting slabs at those depths.

Original languageEnglish
Pages (from-to)307-312
Number of pages6
JournalPhysics of the Earth and Planetary Interiors
Issue number3-4
Publication statusPublished - Apr 1991
Externally publishedYes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Geophysics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science


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