Bridgmanite
(Mg0.87Fe0.13)SiO3 (13% Fe)
Vinet · Original · 2015
V₀
163.16
ų
Unit cell
K₀
243.800
GPa
Isothermal
K′
4.160
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 163.16 | ų | Unit cell | — |
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 | 0.87 |
| FeO | 0.13 |
| SiO2 | 1 |
Formula: (Mg0.87Fe0.13)SiO3
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)powder X-ray diffraction in laser-heated diamond anvil cell, quasi-hydrostatic Ne pressure medium, Ne pressure scale (Dewaele et al. 2008)
- Sample
- synthetic polycrystalline 13% Fe-bearing bridgmanite, this study (Table 3)
Source
- Paper
- The thermal equation of state of (Mg, Fe)SiO3bridgmanite (perovskite) and impli…
- Authors
- Aaron S. Wolf; Jennifer M. Jackson; Przemeslaw K. Dera; Vitali B. Prakapenka
- DOI
- 10.1002/2015jb012108
- Year
- 2015
- Journal
- Journal of Geophysical Research Solid Earth
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 3. Vinet and Mie-Grüneisen-Debye Equation of State Parameters for Bridgmanite: XFe = 13%: V0 (Å3) 163.16(19), K0T (GPa) 243.8(43), K'0T 4.160(110), Θ0 (K) 1000, γ0 1.400(110), q 0.56(37). Data from this work—uses Neon pressure scale from Dewaele et al. [2008].
Additional notes
Theta0 K
1000 (fixed)
gamma0
1.400(110)
q
0.56(37)
V0 prior
163.2 ± 0.2 Å3
note
V0 fitted using Bayesian prior from ambient-volume compilation; errors are 68% confidence intervals