Bridgmanite
(Mg,Fe)SiO3, compositional dependence on X_Fe
Birch-Murnaghan (order unspecified) · Original · 1992
V₀
24.46
Molar
K₀
—
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 24.46 | — | Molar | — |
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
(Mg,Fe)SiO3
Reported as: (Mg,Fe)SiO3, compositional dependence on X_Fe
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- experiment (XRD / DAC / multianvil compression)synchrotron x-ray diffraction in externally heated diamond anvil cell
- Sample
- Fig. 3 model assemblage calculation
Source
- Paper
- Thermoelasticity of Silicate Perovskite and Magnesiowüstite and Stratification …
- Authors
- Lars Stixrude; Russell J. Hemley; Yingwei Fei; H. K. Mao
- DOI
- 10.1126/science.257.5073.1099
- Year
- 1992
- Journal
- Science
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The zero pressure volume of perovskite is V0 = 24.46 + 1.03 X_Fe.
Additional notes
note
Compositional dependence of V0 on bulk iron mole fraction X_Fe = Fe/(Fe+Mg); units not explicitly stated in Fig. 3 caption (presumably cm3 mol-1 consistent with Fig. 1).