Davemaoite
CaSiO3 perovskite in natural KLB-1 peridotite
Birch-Murnaghan (order unspecified) · Original · 2009
V₀
45.6
ų
Unit cell
K₀
244
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.6 | 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 |
|---|---|
| CaO | 1 |
| SiO2 | 1 |
Formula: CaSiO3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- other / unspecified
- Method
- experiment (XRD / DAC / multianvil compression)synchrotron X-ray diffraction in laser-heated diamond anvil cell (P-V-T fit)
- Sample
- KLB-1 peridotite sintered with 7 wt% gold, Table 1 column Ca-pv
Source
- Paper
- Density profile of pyrolite under the lower mantle conditions
- Authors
- A. Ricolleau; Yingwei Fei; Elizabeth Cottrell; H. C. Watson; Liwei Deng; Li Zhang; G. Fiquet; Anne‐Line Auzende; Mathieu Roskosz; G. Morard; Vitali B. Prakapenka
- DOI
- 10.1029/2008gl036759
- Year
- 2009
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 1: Ca-pv V0 (Å3) 45.60 (fixed); K0,T (GPa) 244 (1); K'0,T 4 (fixed). "the optimized parameters for Ca-perovskite (Table 1) reproduce the P-V-T data well over a large P-T range (up to 111 GPa and 2569 K)"
Additional notes
dK dT P GPa per K
-0.035 (2)
a0 1e-5 K-1
3.06 (19)
a1 1e-8 K-2
0.87 (18)
notes
All high-temperature diffraction patterns fitted with a cubic unit cell; new thermal EoS also reproduces multi-anvil P-V-T data of Wang et al. [1996]