Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1996
Why this differs from similar rows?
New in situ synchrotron XRD (SAM-85 cubic-anvil) measurement (Table 4), a different dataset from the Mao et al. [1989] DAC-data refits reported in sibling rows.
V₀
27.45
cm³/mol
Molar
K₀
232
GPa
Isothermal
K′
4.800
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 27.45 | 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 |
|---|---|
| CaO | 1 |
| SiO2 | 1 |
Formula: CaSiO3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- cubic perovskite (Pm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)in situ synchrotron X-ray diffraction, DIA-6 cubic-anvil apparatus (SAM-85)
- Sample
- Table 4 thermoelastic parameters (molar basis, used for lower mantle extrapolation)
Source
- Paper
- Thermal equation of state of CaSiO3 perovskite
- Authors
- Yanbin Wang; Donald J. Weidner; François Guyot
- DOI
- 10.1029/95jb03254
- Year
- 1996
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 4 'Thermoelastic Parameters for MgSiO3 and CaSiO3 Perovskites', CaSiO3 column: V0 = 27.45 cm^3 mol^-1, rho0 = 4.231 g cm^-3, K_T0 = 232 GPa, K'_T0 = 4.8, (dKT/dT)_P = -0.033 GPa/K.
Additional notes
rho0
4.231 g cm^-3
alpha0
3.01 x 10^-5 K^-1
theta0
1100 K (from Wang and Weidner [1994])
delta T0
4.8
gamma0
1.77
q
1 (assumed pressure dependence of Grüneisen parameter through volume)