Physico-Chemical Properties of Olivine and Spinel Solid Solutions in the System Mg2SiO4-Fe2SiO4

  1. Murli H. Manghnani and
  2. Yasuhiko Syono
  1. Hiroshi Watanabe

Published Online: 21 MAR 2013

DOI: 10.1029/GM039p0275

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

How to Cite

Watanabe, H. (1987) Physico-Chemical Properties of Olivine and Spinel Solid Solutions in the System Mg2SiO4-Fe2SiO4 , in High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto (eds M. H. Manghnani and Y. Syono), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM039p0275

Author Information

  1. Osaka Industrial University,Daito, Osaka 574, Japan

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1987

ISBN Information

Print ISBN: 9780875900667

Online ISBN: 9781118664124

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Keywords:

  • Mineralogy and Crystal Chemistry;
  • Phase transformations;
  • High Pressure-High Temperature Research

Summary

Molar heat capacities of synthetic spinel (γ-phase) solid solutions (γ-(Mg0.7, Fe0.3)2SiO4, γ-(Mg0.5, Fe0.5)2SiO4, and γ-(Mg0.3, Fe0.7)2SiO4) and synthetic olivine (α-phase) solid solutions (α-(Mg0.8, Fe0.2)2SiO4, α-(Mg0.5, Fe0.5)2SiO4, and α-(Mg0.2, Fe0.8)2SiO4) were measured between 350 and 700 K using differential scanning calorimetry. It was found that the heat capacities of both types of solid solutions increase with increasing mole percent of the Fe2SiO4 component. It was also found for both types of solid solutions that, between 350 and 700 K, the mean thermal Grüneisen constants have a small composition dependence and the mean thermal Debye temperatures decrease with increasing mole percent of the Fe2SiO4 component.