Bridgmanite
(Mg,Fe)SiO3 with small Al2O3 admixture; atomic ratio Fe/(Fe+Mg) = f
unknown · Cited · 2001
V₀
—
Unknown basis
K₀
264
GPa
Adiabatic
K′
3.800
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
(Mg,Fe)SiO3 with small Al2O3 admixture; atomic ratio Fe/(Fe+Mg) = f
Conditions & method
- Tref
- 290 K
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- literature compilation / cited valueadopted literature values (K from Yeganeh-Haeri 1994) used for composite matching
- Sample
- Table 5, adopted mineral properties for composite fitting
Source
- Paper
- Compositional constraints on the equation of state and thermal properties of th…
- Authors
- Frank D. Stacey; Donald G. Isaak
- DOI
- 10.1046/j.1365-246x.2001.00437.x
- Year
- 2001
- Journal
- Geophysical Journal International
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 5. Mineral properties at P=0, T=290 K used to determine compositions compatible with Table 4: Mg-Fe perovskite, K' = 3.8-4.0, K (GPa) = 264, rho = 4104(1+0.264f-0.012f^2) kg m^-3. 'The value of K for Mg perovskite has also been measured (Yeganeh-Haeri 1994), but K'0 for Mg perovskite is not yet well known... The range of 3.8 to 4.0 for K'0 of Mg perovskite is used in our data fitting.'
Additional notes
density expression
rho (kg m^-3) = 4104(1+0.264f-0.012f^2)
note
Paper defines K = K_S (adiabatic) and primes as adiabatic pressure derivatives; authors conclude K'0(290 K) for Mg perovskite must be close to 3.8