Nature Communications (Jul 2017)

Stability of iron-bearing carbonates in the deep Earth’s interior

  • Valerio Cerantola,
  • Elena Bykova,
  • Ilya Kupenko,
  • Marco Merlini,
  • Leyla Ismailova,
  • Catherine McCammon,
  • Maxim Bykov,
  • Alexandr I. Chumakov,
  • Sylvain Petitgirard,
  • Innokenty Kantor,
  • Volodymyr Svitlyk,
  • Jeroen Jacobs,
  • Michael Hanfland,
  • Mohamed Mezouar,
  • Clemens Prescher,
  • Rudolf Rüffer,
  • Vitali B. Prakapenka,
  • Leonid Dubrovinsky

DOI
https://doi.org/10.1038/ncomms15960
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 9

Abstract

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Carbonates are shown to exist in the lower mantle as seen in diamond inclusions, but thermodynamic constraints are poorly understood. Here, the authors synthesise two new iron carbonate compounds and find that self-oxidation-reduction reactions can preserve carbonates in the mantle.