European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 34, issue 2
Articles | Volume 34, issue 2
https://doi.org/10.5194/ejm-34-167-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/ejm-34-167-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 34, issue 2
Research article
 | 
24 Mar 2022
Research article |  | 24 Mar 2022

Ab initio thermal expansion and thermoelastic properties of ringwoodite (γ-Mg2SiO4) at mantle transition zone conditions

Donato Belmonte, Mattia La Fortezza, and Francesca Menescardi

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Short summary
We carried out theoretical calculations of the vibrational and thermophysical properties of Mg2SiO4 ringwoodite, a major mineral phase of the Earth's mantle transition zone. We tried to understand why current data on volume thermal expansion are still controversial by performing a detailed analysis of vibrational spectra. We proposed a reliable parametrization for thermal expansivity of ringwoodite in the transition zone which could be useful for numerical simulations of mantle convection.
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Probing the Earth: experiments and mineral physics at mantle...