Bridgmanite
Mg 0.62(2), Fe 0.37(3), Al 0.34(2), Si 0.66(2), Ca 0.004(2) per formula unit (O = 3); Al,Fe-bearing bridgmanite
none (not an EOS fit) · Original · 2025
V₀
25.49
cm³/mol
Molar
K₀
—
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 25.49 | cm³/mol | Molar | — |
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 | 0.62 |
| FeO | 0.37 |
| CaO | 0.004 |
| Al2O3 | 0.17 |
| SiO2 | 0.66 |
Formula: Mg 0.62(2), Fe 0.37(3), Al 0.34(2), Si 0.66(2), Ca 0.004(2) per formula unit (O = 3); Al,Fe-bearing bridgmanite
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)micro-focused X-ray diffraction (Bruker AXS D8 Discover, Co-Kα), least-squares refinement of lattice parameters
- Sample
- coexisting Bdm in Run Iris-1272, synthesized at 40 GPa and 2,000°C
Source
- Paper
- First Observation of Quenched Davemaoite to Ambient Conditions: Its Electron Di…
- Authors
- Nοbuyοshi Miyajima; Lin Wang; Tomoo Katsura
- DOI
- 10.1029/2025gl115280
- Year
- 2025
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
which is still larger molar volume than that of the coexisting bridgmanite (25.49 cm3/mol). ... The refined lattice parameters of the coexisting Bdm (Iris-1272) are a = 0.4809(4), b = 0.5002(5), and c = 0.70389(6) nm
Additional notes
lattice parameters
a = 0.4809(4), b = 0.5002(5), c = 0.70389(6) nm
note
Ambient-pressure molar volume of quenched bridgmanite; no K0 or K' reported in this paper