Bridgmanite
Mg0.95Fe(2+)0.04Fe(3+)0.01SiO3
third-order Birch-Murnaghan · Original · 2012
V₀
—
Unknown basis
K₀
236
GPa
Adiabatic
K′
4.700
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 | 0.95 |
| FeO | 0.04 |
| Fe2O3 | 0.005 |
| SiO2 | 1 |
Formula: Mg0.95Fe2+0.04Fe3+0.01SiO3
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (Brillouin / ultrasonic / elasticity)ultrasonic interferometry + in situ X-ray diffraction (multianvil)
- Sample
- this study (velocity + volume data)
Source
- Paper
- Acoustic velocities of pure and iron‐bearing magnesium silicate perovskite meas…
- Authors
- Julien Chantel; D. J. Frost; Catherine McCammon; Zhicheng Jing; Yanbin Wang
- DOI
- 10.1029/2012gl053075
- Year
- 2012
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The adiabatic bulk modulus, Ks, for (Mg, Fe)-Pv, however, is found to be substantially lower than Mg-Pv, with a refined value of 236 GPa and a pressure derivative of 4.7. Table 2: This study 236(2) 4.7(1) 174(1) 1.56(5)
Additional notes
G GPa
174(1)
Gprime
1.56(5)