Bridgmanite
Mg0.96(1)Fe2+0.036(5)Fe3+0.014(5)Si0.99(1)O3 (>60 GPa)
Birch-Murnaghan (order unspecified) · Cited · 2022
Why this differs from similar rows?
Table 3 row citing Fu et al. (2018) XRD data for the >60 GPa range of their fit; sibling row is the same study's <40 GPa range fit, a different pressure regime/data subset.
V₀
—
Unknown basis
K₀
252
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 | 0.96 |
| FeO | 0.036 |
| Fe2O3 | 0.007 |
| SiO2 | 0.99 |
Formula: Mg0.96Fe2+0.036Fe3+0.014Si0.99O3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)X-ray diffraction (literature)
- Sample
- Fu et al. (2018)
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
- Cited (quoted from earlier work)
Evidence from the paper
Table 3 (X-ray diffraction): Fu et al. (2018), Mg0.96(1)Fe2+0.036(5)Fe3+0.014(5)Si0.99(1)O3 (>60 GPa), K_T0 = 252(2), K'_T0 = 4 (fixed).