Stability of hydrous magnesium silicates in the mantle transition zone

Details Stability of hydrous magnesium silicates in the mantle transition zone Stability of hydrous magnesium silicates in the mantle transition zone

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pepi...66..307k&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 66, Issue 3-4, p. 307-312.

Physics

49

Scientific paper

Phase relations in the Mg(OH)2-SiO2 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.
Present address: Department of Chemistry, Arizona State University Tempe, AZ 85287, USA.

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