Bridgmanite
MgSiO3
Birch-Murnaghan (order unspecified) · Cited · 1993
V₀
24.44
cm³/mol
Molar
K₀
261
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 24.44 | cm³/mol | 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
| Oxide | Molar |
|---|---|
| MgO | 1 |
| SiO2 | 1 |
Formula: MgSiO3
Conditions & method
- Tref
- 298 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- thermodynamic / mineral physics modelliterature compilation used in thermodynamic phase-boundary calculation
- Sample
- Table 2 row: MgSiO3 Pv
Source
- Paper
- Refinement of enthalpy measurement of MgSiO3 perovskite and negative pressure‐t…
- Authors
- Masaki Akaogi; Eiji Ito
- DOI
- 10.1029/93gl01265
- Year
- 1993
- Journal
- Geophysical Research Letters
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 2. Physical properties used for phase boundary calculation: MgSiO3 Pv, V°298 = 24.44 cm3/mol, KT = 261 GPa (f), K'T = 4.0 (f), (dKT/dT)P = -63 MPa/K; f: Mao et al. [1991]. Text: 'that at high pressure is calculated by the Birch-Murnaghan equation of state, including effect of temperature on bulk modulus ... of perovskite using Mao et al's [1991] data.'
Additional notes
dKT dT
-63 MPa/K
K0 Kp source
Mao et al. [1991]
thermal expansivity
alpha = a0 + a1*T + a2*T^-2 with a0x10^5 = 3.01, a1x10^9 = 15.00, a2x10 = -11.39 (K^-1)