Bridgmanite
Mg0.93Fe3+0.048Fe2+0.032Al0.10Si0.90O3 (this study, XRD block of Table 3)
Birch-Murnaghan (order unspecified) · Original · 2022
V₀
—
Unknown basis
K₀
256
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
Reported value and unit are preserved as extracted. Z (formula units per cell) is not stored yet, so molar ↔ ų/f.u. conversion is not applied automatically.
Composition
| Oxide | Molar |
|---|---|
| MgO | 0.93 |
| FeO | 0.032 |
| Fe2O3 | 0.024 |
| Al2O3 | 0.05 |
| SiO2 | 0.9 |
Formula: Mg0.93Fe3+0.048Fe2+0.032Al0.10Si0.90O3
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)synchrotron single-crystal XRD in DAC to 75 GPa at 300 K, Au pressure calibrant, neon medium
- Sample
- single-crystal Fe10-Al14-Bgm platelet, run 5K2667 (this study)
Source
- Paper
- Single-crystal elasticity of (Al,Fe)-bearing bridgmanite up to 82 GPa
- Authors
- Suyu Fu; Yanyao Zhang; Takuo Okuchi; Jung‐Fu Lin
- DOI
- 10.2138/am-2022-8435
- Year
- 2022
- Journal
- American Mineralogist
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 3 (X-ray diffraction): This study, Mg0.93Fe3+0.048Fe2+0.032Al0.10Si0.90O3, K_T0 = 256(2), K'_T0 = 4 (fixed); A complimentary XRD run was conducted on single-crystal Fe10-Al14-Bgm up to 75 GPa at 300 K to evaluate its pressure-volume relationship.
Additional notes
ambient lattice parameters
a = 4.7875(3) Å, b = 4.9423(2) Å, c = 6.9205(6) at ambient conditions (V0 not explicitly tabulated)
pressure range
up to 75 GPa