Aluminous hydrous mineral δ-AlOOH as a carrier of hydrogen into the core-mantle boundary

Details Aluminous hydrous mineral δ-AlOOH as a carrier of hydrogen into the core-mantle boundary Aluminous hydrous mineral δ-AlOOH as a carrier of hydrogen into the core-mantle boundary

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3503303s&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 3, CiteID L03303

Physics

9

Geochemistry: Mineral And Crystal Chemistry (3620), Mineral Physics: High-Pressure Behavior, Mineral Physics: X-Ray, Neutron, And Electron Spectroscopy And Diffraction, Geochemistry: Composition Of The Mantle, Mineralogy And Petrology: Mineral And Crystal Chemistry (1042)

Scientific paper

In-situ X-ray diffraction experiments were conducted to determine the stability field of the aluminous hydrous mineral δ-AlOOH over the entire conditions of the lower mantle. We observed δ-AlOOH at pressures from 33 to 134 GPa at 1350-2300 K, indicating that this hydrous mineral in the sediment layer of a subducting slab could transport hydrogen into the core-mantle boundary (CMB).

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