Bridgmanite
MgSiO3 (end-member)
none (not an EOS fit) · Original · 2004
V₀
162.4
ų
Unit cell
K₀
253
GPa
Adiabatic
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 162.4 | 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 |
|---|---|
| MgO | 1 |
| SiO2 | 1 |
Formula: MgSiO3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (Brillouin / ultrasonic / elasticity)Brillouin spectroscopy (platelet geometry, 90-degree external scattering angle)
- Sample
- polycrystalline aggregate, run #3815
Source
- Paper
- Elasticity of single crystal and polycrystalline MgSiO3 perovskite by Brillouin…
- Authors
- Stanislav Sinogeikin; Jianzhong Zhang; Jay D. Bass
- DOI
- 10.1029/2004gl019559
- Year
- 2004
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
A LeBail refinement of the x-ray pattern in the Pbnm space group produced lattice parameters of a = 4.7796 (4) Å, b = 4.9256 (4) Å, c = 6.8971 (4) Å, and V = 162.40 (5) Å3. ... The resulting average K_S and μ are 253(5) and 172(3) GPa, respectively.
Additional notes
shear modulus mu GPa
172(3)
molar volume cm3 per mol
24.45(1)
density g per cm3
4.106 (1)
VP km s
10.84(10)
VS km s
6.47(6)
note
Ambient-condition Brillouin measurement; no P-V EOS fit performed in this study