Bridgmanite
MgSiO3 (Fe-free, single crystal)
none (not an EOS fit) · Cited · 2015
V₀
—
Unknown basis
K₀
253
GPa
Adiabatic
K′
—
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
- —
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (Brillouin / ultrasonic / elasticity)Brillouin spectroscopy at low pressure
- Sample
- single-crystal Fe-free bridgmanite, Sinogeikin et al. [2004]
Source
- Paper
- The thermal equation of state of (Mg, Fe)SiO3bridgmanite (perovskite) and impli…
- Authors
- Aaron S. Wolf; Jennifer M. Jackson; Przemeslaw K. Dera; Vitali B. Prakapenka
- DOI
- 10.1002/2015jb012108
- Year
- 2015
- Journal
- Journal of Geophysical Research Solid Earth
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
... comparing it with the direct adiabatic bulk modulus determinations made from low-pressure Brillouin spectroscopy measurements like those of Sinogeikin et al. [2004], who reported a zero-pressure adiabatic bulk modulus of 253 ± 3 GPa for single-crystal Fe-free bridgmanite.
Additional notes
comparison
This study's computed KS0 = 255.7 ± 4.4 GPa (from KS = KT(1 + αγT) at 0 GPa, 300 K) is consistent with this measurement