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(FeH)1–xTixO2: A new water carrier to the mantle transition zone

  • Tatsuhiko Kawamoto EMAIL logo
Published/Copyright: April 30, 2016
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American Mineralogist
From the journal American Mineralogist Volume 101 Issue 5

Abstract

It is now widely accepted that Earth’s transition zone, located at depth between 410 and 670 km, is most likely hydrated. However, a definite conclusion has yet to be reached regarding the nature of the hydrous phase or phases that have the capacity to efficiently transport water down to such depths. In the April issue of American Mineralogist, Nishihara and Matsukage (2016) show that (FeH)1–xTixO2 can be stable in wet basalts and sediments at high pressures and temperatures. These phases allow subducting lithosphere to transport far more water to the mantle transition zone than previously thought possible.

Keywords: Nominally anhydrous mineral; hydrous mineral; subduction zone; H2O; wadsleyite; ringwoodite; water recycling

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Received: 2015-12-4
Accepted: 2015-12-24
Published Online: 2016-4-30
Published in Print: 2016-5-1

© 2016 by Walter de Gruyter Berlin/Boston

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https://doi.org/10.2138/am-2016-5643
Keywords for this article
Nominally anhydrous mineral; hydrous mineral; subduction zone; H2O; wadsleyite; ringwoodite; water recycling

Articles in the same Issue

  1. Highlights and Breakthroughs
  2. (FeH)1–xTixO2: A new water carrier to the mantle transition zone
  3. Highlights and Breakthroughs
  4. Dissecting a volcano
  5. Highlights and Breakthroughs
  6. W-WO joins the deep Earth electrochemical series
  7. Presidential Address
  8. Time’s arrow in the trees of life and minerals
  9. Research Article
  10. A century of mineral structures: How well do we know them?
  11. Special collection: Building planets: The dynamics and Geochemistry of core formation
  12. Equation of state of pyrite to 80 GPa and 2400 K
  13. Special collection: Perspectives on origins and evolution of crustal magmas
  14. Understanding magmatic processes at Telica volcano, Nicaragua: Crystal size distribution and textural analysis
  15. Special Collection: Apatite: A Common Mineral, Uncommonly Versatile
  16. Non-hydrothermal origin of apatite in SEDEX mineralization and host rocks of the Howard’s Pass district, Yukon, Canada
  17. Research Article
  18. Petrographic investigation of smithing slag of the Hellenistic to Byzantine city of Sagalassos (SW-Turkey)
  19. Research Article
  20. Equation of state and spin crossover of (Mg,Fe)O at high pressure, with implications for explaining topographic relief at the core-mantle boundary
  21. Research Article
  22. “Satellite monazites” in polymetamorphic basement rocks of the Alps: Their origin and petrological significance
  23. Research Article
  24. Solution-chemistry control of Mg2+-calcite interaction mechanisms: Implication for biomineralization
  25. Research Article
  26. Probing carbon-bearing species and CO2 inclusions in amorphous carbon-MgSiO3 enstatite reaction products at 1.5 GPa: Insights from 13C high-resolution solid-state NMR
  27. Research Article
  28. Thermochemistry of rare earth perovskites Na3xRE0.67–xTiO3 (RE = La, Ce)
  29. Research Article
  30. Thermodynamics of bastnaesite: A major rare earth ore mineral
  31. Research Article
  32. A single-crystal X-ray and Raman spectroscopic study of hydrothermally synthesized arsenates and vanadates with the descloizite and adelite structure types
  33. Research Article
  34. Compressional and shear wave velocities for polycrystalline bcc-Fe up to 6.3 GPa and 800 K
  35. Research Article
  36. Majindeite, Mg2Mo3O8, a new mineral from the Allende meteorite and a witness to post-crystallization oxidation of a Ca-Al-rich refractory inclusion
  37. Research Article
  38. Use of multivariate analysis for synchrotron micro-XANES analysis of iron valence state in amphiboles
  39. Research Article
  40. Elasticity and phase transformation at high pressure in coesite from experiments and first-principles calculations
  41. Research Article
  42. Thermodynamics of mixing in an isostructural solid solution: Simulation methodologies and application to the rutile-cassiterite system
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  44. Compressibility of 2M1 muscovite-paragonite series minerals: A computational study to 6 GPa
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  47. Research Article
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  50. The elastic tensor of monoclinic alkali feldspars
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  52. Ca neighbors from XANES spectroscopy: A tool to investigate structure, redox, and nucleation processes in silicate glasses, melts, and crystals
  53. Letter
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  55. Research Article
  56. New Mineral Names
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