Melting experiments on the forsterite-pyrope system at 8 and 13.5 GPa

Takumi Kato, Naoko Nakata, Eiji Ohtani, Kosuke Onuma

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Abstract

The melting phase relations (melting curve of forsterite and binary eutectic composition) of the forsterite (Mg2SiO4)-pyrope (Mg3Al2Si3O12) system have been studied at 8 and 13.5 GPa. Forsterite is observed to melt incongruently into periclase + melt above about 8 GPa and the liquidus field of periclase gradually expands at higher pressures. The eutectic temperature is about 1850°C at 8 GPa and about 2100°C at 13.5 GPa, whereas the eutectic composition of the system is about 75 mol% forsterite at both pressures.

Original languageEnglish
Pages (from-to)97-102
Number of pages6
JournalPhysics of the Earth and Planetary Interiors
Volume107
Issue number1-3
DOIs
Publication statusPublished - Apr 15 1998

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All Science Journal Classification (ASJC) codes

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

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