Garnet phase of MgSiO3 filling the pyroxene-ilmenite gap at very high temperature

Details Garnet phase of MgSiO3 filling the pyroxene-ilmenite gap at very high temperature Garnet phase of MgSiO3 filling the pyroxene-ilmenite gap at very high temperature

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.316..803k&link_type=abstract

Nature (ISSN 0028-0836), vol. 316, Aug. 29, 1985, p. 803-805.

Computer Science

54

Garnets, Geochemistry, Magnesium Oxides, Metamorphism (Geology), Silicon Oxides, Chemical Fractionation, Earth Mantle, High Temperature, Ilmenite, Melting, Meteoritic Composition, Mineralogy, Planetary Composition, Pyroxenes, Static Pressure, X Ray Diffraction

Scientific paper

Melting experiments on MgSiO3, the major constituent of the earth's mantle and planetary interiors, have been conducted at a static pressure of 20 GPs. These experiments reveal the presence of a new garnet-like noncubic phase of MgSiO3, which melts congruently at 2250 C. This new silicate phase and its stability have significant implications for mantle mineralogy, chemical fractionation by partial melting, and the occurrence of aluminum-deficient cubic garnet in shocked meteorites.

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