Bridgmanite
MgSiO3
third-order Birch-Murnaghan · Cited · 1990
V₀
24.46
cm³/mol
Molar
K₀
266
GPa
Unknown
K′
3.900
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 24.46 | 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
- 300 K
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- experiment (XRD / DAC / multianvil compression)single-crystal X-ray (V0); high-pressure X-ray volume measurements (K0, K0')
- Sample
- Table 2, Perovskite row
Source
- Paper
- Fundamental thermodynamic relations and silicate melting with implications for …
- Authors
- Lars Stixrude; M. S. T. Bukowinski
- DOI
- 10.1029/jb095ib12p19311
- Year
- 1990
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
TABLE 2. Parameters of the Fundamental Thermodynamic Relation: Crystals — Perovskite: T0 = 300 K, V0 = 24.46 (1) cm3/mol [Ross and Hazen, 1989], K0 = 266 (6) GPa [Knittle and Jeanloz, 1987], K0' = 3.9 (4) [Knittle and Jeanloz, 1987]. Text: 'V0 is taken from single-crystal X ray measurements for all the minerals. ... that for perovskite was taken from the high-pressure volume measurements of Knittle and Jeanloz [1987]. Compression studies also provided K'0 for diopside and perovskite.'
Additional notes
F0 kJ per mol
102.24 (1) [Ito and Takahashi, 1989]
theta0 K
1012 (6) [Ito and Takahashi, 1989; Knittle et al., 1986]
gamma0
1.73 (14) [Ito and Takahashi, 1989; Knittle et al., 1986]
q
1 (1) assumed for all materials
V0 source
Ross and Hazen [1989]
K0 source
Knittle and Jeanloz [1987]
Kp source
Knittle and Jeanloz [1987]
notes
Thermal parameters gamma0 and theta0 for perovskite constrained by thermal expansion data combined with the measured slope of the ilmenite-perovskite transition boundary; K0 and K0' cited from Knittle and Jeanloz [1987] high-pressure compression measurements.