Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1994
V₀
27.59
cm³/mol
Molar
K₀
281
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 27.59 | 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
- 300 K
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- literature compilation / cited valuethermoelastic parameters compiled for lower mantle modeling (Table 2); V0 from this study, KT0 from Mao et al. (1989)
- Sample
- —
Source
- Paper
- Thermoelasticity of CaSiO3 perovskite and implications for the lower mantle
- Authors
- Yanbin Wang; Donald J. Weidner
- DOI
- 10.1029/94gl00976
- Year
- 1994
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 2. Thermoelastic Parameters for Mg1-xFexSiO3 and CaSiO3 Perovskites: CaSiO3 — V0, cc/mol 27.59; ρ0, g/cc 4.2103; KT0, GPa 281; KT0' 4; (∂KT/∂T)P (GPa/K) -0.03*; ΘD, K 1100; δT(ΘD) 3.8*. ... with KT0 = 281 GPa (Mao et al., 1989) and V(0, 300K) = 45.83 Å3 (this study).
Additional notes
rho0
4.2103 g/cc
dKT dT
-0.03 GPa/K (assumed based on MgSiO3 perovskite data, Wang et al. 1994)
Debye temperature
1100 K
delta T
3.8 (assumed based on MgSiO3 perovskite data)
K0 source
Mao et al. (1989)
V0 source
this study; corresponds to V(0, 300K) = 45.83 Å3
gamma0 estimate
1.66 to 1.82 for q = 1
thermal expansion
alpha(10.6 GPa) = 2.69(8)x10^-5 K^-1; alpha(11.7 GPa) = 2.56(8)x10^-5 K^-1