Abstract
High-pressure and high-temperature stability of MgC03 magnesite was investigated using a lever and spring type of diamond anvil cell up to 55 GPa at about 1300°C. No phase transformation was observed in magnesite at the pressures investigated. Magnesite would be a dominant carbon-reservoir in the lower mantle. The volume of magnesite at 55 GPa is 77% of that at the atmospheric pressure. The compressibility in the c-axis is 8% larger than that in the a-axis. © 1991, The Japan Academy. All rights reserved.
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Katsura, T., Ito, E., Akimoto, S. iti, Tsuchida, Y., Yagi, T., & Utsumi, W. (1991). 10. Stability of Magnesite under the Lower Mantle Conditions. Proceedings of the Japan Academy Series B: Physical and Biological Sciences, 67(4), 57–60. https://doi.org/10.2183/pjab.67.57
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