Akimotoite
en90 bronzitite (~(Mg0.90,Fe0.10)SiO3)
Murnaghan · Original · 2007
V₀
—
Unknown basis
K₀
257
GPa
Adiabatic
K′
2
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 | 0.9 |
| FeO | 0.1 |
| SiO2 | 1 |
Formula: en90 bronzitite (~(Mg0.90,Fe0.10)SiO3)
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- ilmenite (akimotoite)
- Method
- experiment (shock wave)shock-wave Hugoniot data reduced to isentrope (linear Us-up fit)
- Sample
- Stillwater bronzitite (Bronzitite S)
Source
- Paper
- On the Occurrence of (Mg, Fe)SiO3 in the Lower Mantle
- Authors
- E. K. Graham
- DOI
- 10.1111/j.1365-246x.1975.tb06463.x
- Year
- 2007
- Journal
- Geophysical Journal of the Royal Astronomical Society
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
As an example, the results for the Stillwater bronzitite in the inferred 'ilmenite-like' phase are as follows: rho0 = 3.85 g cm-3, K0^S = 2.57 Mbar, and (dK^S/dP)_0 = 2.
Additional notes
rho0
3.85 g cm-3
Phi
66.8 (km s-1)^2
enstatite mole fraction
0.9
note
Kp derived from beta^S = 4s - 1 with linear Us = C0 + s*up fit; Table 3 values identical for unmodified rock and (Mg,Fe)SiO3 derivative composition.