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bridgmanite

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Journal Article
Published: 01 June 2024
American Mineralogist (2024) 109 (6): 1036–1044.
...Narangoo Purevjav; Naotaka Tomioka; Shigeru Yamashita; Keiji Shinoda; Sachio Kobayashi; Kenji Shimizu; Motoo Ito; Suyu Fu; Jesse Gu; Christina Hoffmann; Jung-Fu Lin; Takuo Okuchi Abstract Bridgmanite, the most abundant mineral in the lower mantle, can play an essential role in deep-Earth hydrogen...
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Journal Article
Published: 01 May 2024
American Mineralogist (2024) 109 (5): 872–881.
...Suyu Fu; Stella Chariton; Yanyao Zhang; Takuo Okuchi; Vitali B. Prakapenka; Jung-Fu Lin Abstract Here we have performed single-crystal X-ray diffraction (SCXRD) experiments on two high-quality crystal platelets of (Al,Fe)-bearing bridgmanite (Mg 0.88 Fe 0.065 3 + Fe 0.035 2 + Al 0.03 )(Al 0.11 Si...
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Journal Article
Published: 03 April 2023
American Mineralogist (2023) 108 (4): 719–730.
... to the lack of single-crystal elastic moduli ( C ij ) and aggregate sound velocities of (Al,Fe)-bearing bridgmanite, the most abundant mineral of the planet, at the lower mantle pressure-temperature ( P-T ) conditions. Here we report single-crystal C ij of (Al,Fe)-bearing bridgmanite, Mg 0.88 Fe 0.1 Al 0.14...
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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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The crystal structure of (Fe,Al)-bearing <span class="search-highlight">bridgmanite</span> with an orthorhombic s...
Published: 01 June 2024
Figure 1. The crystal structure of (Fe,Al)-bearing bridgmanite with an orthorhombic symmetry (space group Pbnm ). The bridgmanite structure consists of A-site cations, B-site cations, and oxygen anions with an ABO 3 perovskite-type framework. In the illustration, the A sites are visible
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Synthesis and characterization of the (Fe,Al)-bearing <span class="search-highlight">bridgmanite</span> crystals....
Published: 01 June 2024
Figure 2. Synthesis and characterization of the (Fe,Al)-bearing bridgmanite crystals. All scale bars shown with black color are 100 μm in length. ( a ) A stereo microscope image of the recovered bridgmanite crystals with dark-brownish color and subhedral to euhedral forms. ( b ) A micro-focused X
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TEM&#x2F;STEM micrographs of the (Fe,Al)-bearing <span class="search-highlight">bridgmanite</span> crystal. ( a ) A br...
Published: 01 June 2024
Figure 3. TEM/STEM micrographs of the (Fe,Al)-bearing bridgmanite crystal. ( a ) A bright-field TEM image of a representative thin foil, which shows homogeneous crystal without visible inclusions or defects. ( b ) A bright-field STEM image showing the lattice fringes of (001). ( c ) A Fourier
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Results of hydrogen concentration analysis for the <span class="search-highlight">bridgmanite</span> (Bdg) crysta...
Published: 01 June 2024
Figure 5. Results of hydrogen concentration analysis for the bridgmanite (Bdg) crystals by SIMS. The solid and broken lines show correlations between 1 H/ 30 Si count ratios and water concentrations using natural amphibole (Amp) and basaltic glass (EPR-3G) as the standards, respectively. San
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Sensitivity analyses of single-crystal <span class="search-highlight">bridgmanite</span> platelets for derivation...
Published: 03 April 2023
Figure 1. Sensitivity analyses of single-crystal bridgmanite platelets for derivations of its elastic moduli. ( a and b ) Platelets with crystallographic orientations of (–0.50, 0.05, –0.86) and (0.65, –0.59, 0.48), respectively. The calculations follow literature studies ( Fu et al. 2019b
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Adiabatic bulk and shear moduli of <span class="search-highlight">bridgmanite</span> with different Fe and Al con...
Published: 03 April 2023
Figure 6. Adiabatic bulk and shear moduli of bridgmanite with different Fe and Al contents at high pressure and 300 K. ( a and b ) K S and μ, respectively. Solid red circles are from the single-crystal Fe10-Al14-Bgm data in this study and other symbols are experimental data from
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Modeled velocity profiles of <span class="search-highlight">bridgmanite</span> at lower-mantle relevant pressure-...
Published: 03 April 2023
Figure 7. Modeled velocity profiles of bridgmanite at lower-mantle relevant pressure-temperature conditions. Using the quantitative Fe and Al effects on elastic properties of bridgmanite, we modeled ν P and ν S of three bridgmanite compositions, MgSiO 3 end-member (black lines), Fe5-Al5-Bgm
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Solid solubility of Ca in <span class="search-highlight">bridgmanite</span> as a function of mixing temperature a...
Published: 01 March 2023
Figure 4. Solid solubility of Ca in bridgmanite as a function of mixing temperature at 125 GPa. The blue line represents the univariant Fe concentration with light blue, green, yellow, red, and purple representing 0, 1, 6.25, 12.5, and 25%, respectively. (Color online.)
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Mg# versus NiO (A), Al 2 O 3  (B), and CaO (C) of former <span class="search-highlight">bridgmanite</span> (brd) ...
Published: 20 January 2023
Figure 1. Mg# versus NiO (A), Al 2 O 3 (B), and CaO (C) of former bridgmanite (brd) inclusions from Koffiefontein mine, South Africa (red diamonds), and lower-mantle diamonds globally (white diamonds; Walter et al., 2022 ). The field of experimental bridgmanite in primitive mantle coexisting
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Composition of orthopyroxene (opx) (retrogressed <span class="search-highlight">bridgmanite</span> [brd]) and fer...
Published: 20 January 2023
Figure 2. Composition of orthopyroxene (opx) (retrogressed bridgmanite [brd]) and ferropericlase (fper) inclusions co-occurring in sublithospheric diamonds projected onto the Mg-Fe-Si ternary diagram (molar). Inclusions are shown as diamonds and color coded by locality. Compilation