Home Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite at deep lower mantle conditions
Article
Licensed
Unlicensed Requires Authentication

Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite at deep lower mantle conditions

  • Ryosuke Sinmyo EMAIL logo , Haruka Ozawa , Kei Hirose , Akira Yasuhara , Noriaki Endo , Nagayoshi Sata and Yasuo Ohishi
Published/Copyright: April 1, 2015
Become an author with De Gruyter Brill
Author Information
American Mineralogist
From the journal American Mineralogist Volume 93 Issue 11-12

Abstract

We have determined the Fe3+/ΣFe ratio of Al-free (Mg,Fe)SiO3 perovskite, post-perovskite, and (Mg,Fe)O ferropericlase synthesized at 99 to 187 GPa and 1830 to 3500 K based on the electron energyloss near-edge structure (ELNES) spectroscopy. The results demonstrate that post-perovskite includes minor amounts of ferric iron with Fe3+/ΣFe ratios of 0.11 to 0.21. These values are substantially lower than those of Al-rich post-perovskite (Fe3+/ΣFe = 0.59 to 0.69) reported in a previous study, suggesting that the Fe3+-Al3+ coupled substitution is important in post-perovskite, as in the case of perovskite. The Al-bearing post-perovskite in a pyrolitic mantle composition likely contains a considerable amount of ferric iron, which affects various physical properties in the lowermost mantle.

Keywords : Post-perovskite; perovskite; ferric iron; lower mantle; D″ layer
Received: 2007-9-27
Accepted: 2008-5-20
Published Online: 2015-4-1
Published in Print: 2008-11-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Review Paper. Mineral evolution
  2. Amorphous materials: Properties, structure, and durability: Structure of Mg- and Mg/Ca aluminosilicate glasses: 27Al NMR and Raman spectroscopy investigations
  3. Amorphous materials: Properties, structure, and durability: Constrained interactions, rigidity, adaptative networks, and their role for the description of silicates
  4. Amorphous materials: Properties, structure, and durability: Quantification of the kinetics of iron oxidation in silicate melts using Raman spectroscopy and assessment of the role of oxygen diffusion
  5. Amorphous materials: Properties, structure, and durability: Solubility and solution mechanisms of NOH volatiles in silicate melts at high pressure and temperature—amine groups and hydrogen fugacity
  6. High- and ultrahigh-pressure metamorphism: Past results and future prospects
  7. Crystal structure of a synthetic tin-selenium representative of the cylindrite structure type
  8. Nano to macroscale biomineral architecture of red coral (Corallium rubrum)
  9. Timescales of spherulite crystallization in obsidian inferred from water concentration profiles
  10. Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure gauge for helium pressure media
  11. In situ high-pressure single-crystal X-ray study of aegirine, NaFe3+Si2O6, and the role of M1 size in clinopyroxene compressibility
  12. Oxygen fugacity, temperature reproducibility, and H2O contents of nominally anhydrous piston-cylinder experiments using graphite capsules
  13. Coesite inclusions in garnet from eclogitic rocks in western Tianshan, northwest China: Convincing proof of UHP metamorphism
  14. Crystal chemistry of macfallite: Relationships to sursassite and pumpellyite
  15. Bacterially enhanced dissolution of meta-autunite
  16. Common gem opal: An investigation of micro- to nano-structure
  17. Structural transition of post-spinel phases CaMn2O4, CaFe2O4, and CaTi2O4 under high pressures up to 80 GPa
  18. Pressure-temperature stability studies of FeOOH using X-ray diffraction
  19. The parental melt of lherzolitic shergottite ALH 77005: A study of rehomogenized melt inclusions
  20. Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite at deep lower mantle conditions
  21. Lakargiite CaZrO3: A new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia
  22. Xocolatlite, Ca2Mn4+2 Te2O12·H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy
  23. Pyroxmangite: A high-pressure single-crystal study
  24. Letter. Continuous time-resolved X-ray diffraction of the biocatalyzed reduction of Mn oxide
  25. Letter. Igneous Ca-rich pyroxene in comet 81P/Wild 2
  26. Letter. A unique glimpse into asteroidal melting processes in the early solar system from the Graves Nunatak 06128/06129 achondrites
https://doi.org/10.2138/am.2008.2806
Keywords for this article
Post-perovskite; perovskite; ferric iron; lower mantle; D″ layer

Articles in the same Issue

  1. Review Paper. Mineral evolution
  2. Amorphous materials: Properties, structure, and durability: Structure of Mg- and Mg/Ca aluminosilicate glasses: 27Al NMR and Raman spectroscopy investigations
  3. Amorphous materials: Properties, structure, and durability: Constrained interactions, rigidity, adaptative networks, and their role for the description of silicates
  4. Amorphous materials: Properties, structure, and durability: Quantification of the kinetics of iron oxidation in silicate melts using Raman spectroscopy and assessment of the role of oxygen diffusion
  5. Amorphous materials: Properties, structure, and durability: Solubility and solution mechanisms of NOH volatiles in silicate melts at high pressure and temperature—amine groups and hydrogen fugacity
  6. High- and ultrahigh-pressure metamorphism: Past results and future prospects
  7. Crystal structure of a synthetic tin-selenium representative of the cylindrite structure type
  8. Nano to macroscale biomineral architecture of red coral (Corallium rubrum)
  9. Timescales of spherulite crystallization in obsidian inferred from water concentration profiles
  10. Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure gauge for helium pressure media
  11. In situ high-pressure single-crystal X-ray study of aegirine, NaFe3+Si2O6, and the role of M1 size in clinopyroxene compressibility
  12. Oxygen fugacity, temperature reproducibility, and H2O contents of nominally anhydrous piston-cylinder experiments using graphite capsules
  13. Coesite inclusions in garnet from eclogitic rocks in western Tianshan, northwest China: Convincing proof of UHP metamorphism
  14. Crystal chemistry of macfallite: Relationships to sursassite and pumpellyite
  15. Bacterially enhanced dissolution of meta-autunite
  16. Common gem opal: An investigation of micro- to nano-structure
  17. Structural transition of post-spinel phases CaMn2O4, CaFe2O4, and CaTi2O4 under high pressures up to 80 GPa
  18. Pressure-temperature stability studies of FeOOH using X-ray diffraction
  19. The parental melt of lherzolitic shergottite ALH 77005: A study of rehomogenized melt inclusions
  20. Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite at deep lower mantle conditions
  21. Lakargiite CaZrO3: A new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia
  22. Xocolatlite, Ca2Mn4+2 Te2O12·H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy
  23. Pyroxmangite: A high-pressure single-crystal study
  24. Letter. Continuous time-resolved X-ray diffraction of the biocatalyzed reduction of Mn oxide
  25. Letter. Igneous Ca-rich pyroxene in comet 81P/Wild 2
  26. Letter. A unique glimpse into asteroidal melting processes in the early solar system from the Graves Nunatak 06128/06129 achondrites
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 19.9.2025 from https://www.degruyterbrill.com/document/doi/10.2138/am.2008.2806/html
Scroll to top button