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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Miyamoto, Y., Takubo, H., Kume, S. et al. Melting of Mg2GeO4 under pressure. Bull Volcanol 41, 664–669 (1978). https://doi.org/10.1007/BF02597392
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DOI: https://doi.org/10.1007/BF02597392