Bridgmanite
MgSiO3 (x = 0)
Birch-Murnaghan (order unspecified) · Cited · 1991
Why this differs from similar rows?
Cites Yagi et al. [1982], powder XRD in a methanol-ethanol medium to 7 GPa (nonhydrostatic above 7.5-9 GPa, only data below 7.5 GPa used); other rows cite different original studies/samples/pressure media.
V₀
—
Unknown basis
K₀
258
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
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
- other / unspecified
- Method
- experiment (XRD / DAC / multianvil compression)powder X ray diffraction P-V measurement
- Sample
- powder, methanol-ethanol pressure medium
Source
- Paper
- Effect of pressure, temperature, and composition on lattice parameters and dens…
- Authors
- Ho‐kwang Mao; R. J. Hemley; Ying‐heng Fei; Jinfu Shu; L. C. Chen; A. P. Jephcoat; Yan Wu; William A. Bassett
- DOI
- 10.1029/91jb00176
- Year
- 1991
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 4: 258 GPa, K'=4, M-E medium, powder, x=0, to 7 GPa, Yagi et al. [1982]. 'Zero-pressure bulk moduli were obtained by fitting Birch or Murnaghan equations of state to P-V data, mostly with the assumption of KT0' = 4.'
Additional notes
beta a
1.58 TPa-1
beta b
1.19 TPa-1
beta c
1.10 TPa-1
P max
7 GPa
note
Pressure conditions became clearly nonhydrostatic between 7.5 and 9 GPa; only data below 7.5 GPa used