Solubility of water in pyrope-rich garnet at high pressures and temperature

Details Solubility of water in pyrope-rich garnet at high pressures and temperature Solubility of water in pyrope-rich garnet at high pressures and temperature

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3703310m&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 3, CiteID L03310

Physics

3

Mineralogy And Petrology: Thermodynamics (0766, 1011, 8411), Mineralogy And Petrology: Mineral And Crystal Chemistry (1042), Mineralogy And Petrology: Experimental Mineralogy And Petrology, Mineral Physics: Creep And Deformation, Mineral Physics: High-Pressure Behavior

Scientific paper

The water solubility in pyrope-rich garnet was determined between pressures of 5-9 GPa and temperatures of 1373-1473 K under silica activity and oxygen fugacity similar to those expected in the Earth's upper mantle. We found that pyrope-rich garnet has substantial water solubility up to ˜0.1 wt% under these conditions. In addition, the water content in garnet varied as a function of chemical conditions. In particular, the variation in water fugacity (and Mg#) caused a variation in water partitioning with olivine (DH2Ool/py). The substantial water solubility in pyrope-rich garnet under deep upper mantle conditions might have significant influence on physical and transport properties.

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