Physics
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2025t&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 14, p. 2025-2028
Physics
8
Geochemistry: Composition Of The Mantle, Mineralogy And Petrology: Experimental Mineralogy And Petrology, Mineral Physics: High-Pressure Behavior, Mineral Physics: X Ray, Neutron, And Electron Spectroscopy And Diffraction
Scientific paper
Phase transformation of jadeite clinopyroxene was studied at temperatures of 800 and 2200°C at pressures between 30-75 GPa in externally electrically heated and internally laser-heated diamond anvil cells. It has been found that jadeite transforms to the assemblage of NaAlSiO4 (calcium-ferrite type structure) plus stishovite at high pressure and temperatures. Therefore NaAlSiO4 calcium-ferrite is stable at the deep lower mantle pressure and temperature conditions.
Dubrovinsky Leonid S.
Saxena Surendra K.
Tutti Faramarz
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