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bridgmanite

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Journal Article
Published: 01 July 2020
American Mineralogist (2020) 105 (7): 1030–1039.
..., (Mg,Fe,Al)(Fe,Al,Si)O 3 bridgmanite, control physical properties of the mantle including density, elasticity, and electrical and thermal conductivity. However, the determination of electronic states of iron has been controversial, in part due to different interpretations of Mössbauer spectroscopy...
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Journal Article
Published: 01 June 2017
American Mineralogist (2017) 102 (6): 1263–1269.
...Ryosuke Sinmyo; Catherine Mccammon; Leonid Dubrovinsky Abstract Iron- and aluminum-bearing MgSiO 3 bridgmanite is the most abundant mineral in the Earth's interior; hence its crystal chemistry is fundamental to expanding our knowledge of the deep Earth and its evolution. In this study, the valence...
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Journal Article
Published: 01 February 2017
American Mineralogist (2017) 102 (2): 357–368.
...Zhu Mao; Fan Wang; Jung-Fu Lin; Suyu Fu; Jing Yang; Xiang Wu; Takuo Okuchi; Naotaka Tomioka; Vitali B. Prakapenka; Yuming Xiao; Paul Chow Abstract In this study, we performed synchrotron X-ray diffraction (XRD) and Mössbauer spectroscopy (SMS) measurements on two single-crystal bridgmanite samples...
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Journal Article
Published: 01 January 2017
American Mineralogist (2017) 102 (1): 227–230.
...Luca Bindi; Ekaterina Sirotkina; Andrey V. Bobrov; Michael J. Walter; Dmitry Pushcharovsky; Tetsuo Irifune Abstract A new Ti-bearing bridgmanite-like phase with a threefold commensurate superstructure of the ideal MgSiO 3 -perovskite structure was observed in a [Mg 5/6 Al 1/6 ][Si 1/2 Ti 1/3 Al 1/6...
FIGURES
Journal Article
Published: 01 July 2016
American Mineralogist (2016) 101 (7): 1560–1570.
...Asmaa Boujibar; Nathalie Bolfan-Casanova; Denis Andrault; M. Ali Bouhifd; Nicolas Trcera Abstract Using large volume press, samples of bridgmanites (Bg) in equilibrium with both silicate melt and liquid Fe-alloy were synthesized to replicate the early period of core-mantle segregation and magma...
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Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2246–2253.
...Susannah M. Dorfman; James Badro; Jean-Pascal Rueff; Paul Chow; Yuming Xiao; Philippe Gillet Abstract Spin transitions in (Mg,Fe)SiO 3 bridgmanite have important implications for the chemistry and dynamics of Earth’s lower mantle, but have been complex to characterize in experiments. We examine...
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Journal Article
Published: 01 August 2015
American Mineralogist (2015) 100 (8-9): 1978–1984.
...Jiachao Liu; Bjorn Mysen; Yingwei Fei; Jie Li Abstract Aluminous bridgmanite (Al-Bm) is the dominant phase in the Earth’s lower mantle. In this study, the Mössbauer spectra of an Al-Bm sample Mg 0.868 Fe 0.087 Si 0.944 Al 0.101 O 2.994 were recorded from 65 to 300 K at 1 bar. The temperature...
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Observed Mössbauer spectra for iron-bearing <span class="search-highlight">bridgmanite</span> at high pressure ~2...
Published: 01 July 2020
Figure 3. Observed Mössbauer spectra for iron-bearing bridgmanite at high pressure ~27 GPa below the spin transition in Fe 3+ . Spectra shown in a , b , and c use synchrotron Mössbauer source at ESRF ID18 (total Fe 3+ /total Fe listed for each composition is assumed to be same as 1 bar
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Observed Mössbauer spectra for iron-bearing <span class="search-highlight">bridgmanite</span> at high pressure ~7...
Published: 01 July 2020
Figure 4. Observed Mössbauer spectra for iron-bearing bridgmanite at high pressure ~72 GPa above the spin transition in Fe 3+ . Spectra shown in a , b , and c use synchrotron Mössbauer source at ESRF ID18 (total Fe 3+ /total Fe listed for each composition is assumed to be same as 1 bar
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Mössbauer parameters observed for Fe in <span class="search-highlight">bridgmanite</span> and other compounds. Re...
Published: 01 July 2020
Figure 7. Mössbauer parameters observed for Fe in bridgmanite and other compounds. Results from this study for Fe 2+ = blue circles, high-spin Fe 3+ = red up-pointing triangles, low-spin Fe 3+ = pink down-pointing triangles, charge transfer (Fe 2.5+ ) component = purple diamonds. Error bars
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Structural representations of <span class="search-highlight">bridgmanite</span>, liuite, and wandaodeite, the thr...
Published: 01 December 2019
Figure 12. Structural representations of bridgmanite, liuite, and wandaodeite, the three known perovskite-type high-pressure minerals: ( a ) bridgmanite (Mg,Fe)SiO 3 , in standard setting Pnma of space group 62; ( b ) liuite (Fe,Mg)(Ti,Si)O 3 , in same setting and with noticeably larger tilt
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<span class="search-highlight">Bridgmanite</span>-wuestite intergrowth at the border of a shock-melt pocket in th...
Published: 01 December 2019
Figure 13. Bridgmanite-wuestite intergrowth at the border of a shock-melt pocket in the Tissint shergottitic martian meteorite. The intergrowth occupies the diagonal band running from the lower left to the upper right corner of the image and coarsens toward the melt pocket in the lower right
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Aggregate  V  P  and  V  S  of <span class="search-highlight">bridgmanite</span>, ferropericlase, and Ca-perovski...
Published: 01 February 2019
Figure 10. Aggregate V P and V S of bridgmanite, ferropericlase, and Ca-perovskite in the Earth's lower mantle. These results are compared with the PREM model ( Dziewonski and Anderson 1981 ). For the pyrolite mineralogical model, we used 75 vol% Bgm10 ( Chantel et al. 2012 ; Murakami et
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Pressure-volume relationships of <span class="search-highlight">bridgmanite</span> at 300 K. Red = Bm6; green cir...
Published: 01 February 2017
Figure 4 Pressure-volume relationships of bridgmanite at 300 K. Red = Bm6; green circles = Al-Bm11; blue line = MgSiO 3 ( Boffa Ballaran et al. 2012) ; circles = data from the first run; diamonds = data from the second run. Corresponding lines represent the fits using the third-order Birch
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Density (ρ 0 ) and bulk modulus ( K  0T ) of <span class="search-highlight">bridgmanite</span> at ambient conditi...
Published: 01 February 2017
Figure 7 Density (ρ 0 ) and bulk modulus ( K 0T ) of bridgmanite at ambient conditions. ( a ). ρ 0 ; ( b ). K 0T . Red = Fe-bearing bridgmanite; blue = (Fe,Al)-bridgmanite; open symbols = results from polycrystalline bridgmanite samples ( Andrault et al. 2001 ; Catalli et al. 2010 , 2011
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(a)  Trace element abundances in MgSiO 3 -rich inclusions from the global d...
Published: 01 July 2022
Figure 17. (a) Trace element abundances in MgSiO 3 -rich inclusions from the global dataset normalized to BSE. (b) Includes calculated abundance patterns for bridgmanite expected in meta-peridotitic, meta-harzburgitic, meta-basaltic (MORB) and processed meta-basaltic assemblages at lower
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SEM-BSE image of idiomorphic Ti-bearing <span class="search-highlight">bridgmanite</span>-like (Ti-Brd) crystals ...
Published: 01 January 2017
Figure 1 SEM-BSE image of idiomorphic Ti-bearing bridgmanite-like (Ti-Brd) crystals associated with rutile (Rt) and periclase (Per) in the run 1608-70 [ P = 20 GPa, T = 1600 °C]. CamScan electronic microscope MV2300. (Color online.)
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The structure of the Ti-<span class="search-highlight">bridgmanite</span>-like phase down [010]. Mg sites are giv...
Published: 01 January 2017
Figure 2 The structure of the Ti-bridgmanite-like phase down [010]. Mg sites are given as spheres (red = MgA and MgB; yellow = MgC). Octahedra refers to the Ti site (dark blue) and to the (Si,Al) site (light blue). The unit cell and the orientation of the structure are outlined. (Color online.)
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Example of XANES spectra measured on a <span class="search-highlight">bridgmanite</span> of the sample no. 108 an...
Published: 01 July 2016
Figure 1 Example of XANES spectra measured on a bridgmanite of the sample no. 108 and the bridgmanite reference.
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Na contents (in atoms per formula unit) in ringwoodite and <span class="search-highlight">bridgmanite</span> plot...
Published: 01 February 2016
Figure 2 Na contents (in atoms per formula unit) in ringwoodite and bridgmanite plotted against the Mg contents (in atoms per formula unit).