Stability of Fe,Al-bearing bridgmanite in the lower mantle and synthesis of pure Fe-bridgmanite
- Univ. of Bayreuth (Germany). Bayerisches Geoinstitut, and Lab. of Crystallography
- Univ. of Bayreuth (Germany). Bayerisches Geoinstitut
- Univ. of Bayreuth (Germany). Bayerisches Geoinstitut; European Synchrotron Radiation Facility (ESRF), Grenoble (France)
- Moscow State Univ., Moscow (Russian Federation). Dept. of Petrology, Geological Faculty
- Univ. of Bayreuth (Germany). Lab. of Crystallography
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Photon Science
- Univ. of Bayreuth (Germany). Bayerisches Geoinstitut; European Synchrotron Radiation Facility (ESRF), Grenoble (France); Univ. of Munster, Munster (Germany). Institut für Mineralogie
- Univ. of Munster, Munster (Germany). Institut für Mineralogie
- Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources
The physical and chemical properties of Earth’s mantle, as well as its dynamics and evolution, heavily depend on the phase composition of the region. Here, on the basis of experiments in laser-heated diamond anvil cells, we demonstrate that Fe,Al-bearing bridgmanite (magnesium silicate perovskite) is stable to pressures over 120 GPa and temperatures above 3000 K. Ferric iron stabilizes Fe-rich bridgmanite such that we were able to synthesize pure iron bridgmanite at pressures between ~45 and 110 GPa. The compressibility of ferric iron–bearing bridgmanite is significantly different from any known bridgmanite, which has direct implications for the interpretation of seismic tomography data.
- Research Organization:
- Univ. of Chicago, IL (United States)
- Sponsoring Organization:
- USDOE; Federal Ministry of Education and Research (BMBF) Germany; German Research Foundation (DFG)
- Grant/Contract Number:
- FG02-94ER14466; AC02-06CH11357
- OSTI ID:
- 1466581
- Journal Information:
- Science Advances, Vol. 2, Issue 7; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 24 works
Citation information provided by
Web of Science
Web of Science
Valence and spin states of iron are invisible in Earth’s lower mantle
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journal | March 2018 |
Implementation and application of the peak scaling method for temperature measurement in the laser heated diamond anvil cell
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journal | August 2018 |
High-pressure single-crystal X-ray diffraction and synchrotron Mössbauer study of monoclinic ferrosilite
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journal | February 2019 |
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