Bridgmanite
MgSiO3 (end-member)
unknown · Cited · 2004
V₀
—
Unknown basis
K₀
~261
GPa
Isothermal
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 (XRD / DAC / multianvil compression)static compression (cited: Mao et al., 1991; Wang et al., 1994; Funamori et al., 1996; Fiquet et al., 1998)
- Sample
- literature average from static compression studies
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
- Cited (quoted from earlier work)
Evidence from the paper
The average value of the isothermal bulk modulus (K_T0) of MgSiO3 reported in these recent studies is ~261 GPa. ... Most calculations of such derivatives have thus far been based on the assumption that K_T0 = 261(1) GPa.
Additional notes
alternate quotation
K_T0 = 261(1) GPa assumed in derivative calculations [e.g., Bina, 1995; Jackson and Rigden, 1996; Fiquet et al., 2000; Shim and Duffy, 2000]
note
Several P-V EOS studies suggest a K_T0 value 3–4% lower than 261 GPa [e.g., Ross and Hazen, 1990; Fiquet et al., 2000]