Melting of Mg2GeO4 under pressure |
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| Authors: | Y Miyamoto H Takubo S Kume M Koizumi |
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| Institution: | 1. College of General Education, Osaka University, 560, Toyonaka, Japan
2. Institute of Scientific and Industrial Research, 565, Suita, Japan
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| Abstract: | Melting point of germanate forsterite, Mg2GeO4, was raised by compression at the rate of 30°C/GPa. The triple point, at which three phases of olivine- and spinel-type solids and liquid coexisted, was fixed at 1950°C and 3.5GPa. Wen these results are combined with the thermodynamical data of forsterite, Mg2SiO4, it is estimated that the triple point of forsterite lies in a region ranging from 2700° to 3000°C in temperature and from 20 to 30GPa in pressure. |
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