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Superhydrous phase B
Mg8.93Si2.72Al0.56O18H5.57
third-order Birch-Murnaghan · Original · 2024
V₀
621.41
ų
Unit cell
K₀
145.070
GPa
Isothermal
K′
4.455
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 621.41 | 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 | 8.93 |
| Al2O3 | 0.28 |
| SiO2 | 2.72 |
| H2O | 2.785 |
Formula: Mg8.93Si2.72Al0.56O18H5.57
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- other / unspecified
- Method
- experiment (Brillouin / ultrasonic / elasticity)synchrotron energy-dispersive X-ray diffraction + ultrasonic interferometry in Kawai-type multi-anvil apparatus
- Sample
- S3358 (polycrystalline)
Source
- Paper
- Effect of Al‐Incorporation on the Sound Velocities of Superhydrous Phase B at H…
- Authors
- Chaowen Xu; Steeve Gréaux; Ying Chun Li; Fengxia Sun; Jing Gao; Fei Qin; Toru Inoue
- DOI
- 10.1029/2023gl107818
- Year
- 2024
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
A refitting of our data to the BM3-EoS using the pressure calculated from our finite strain EoS for SuB yielded: K_T0 = 145.07 (3) GPa and K'_T0 = 4.455 (4) for S3358. Table 1 (Birch–Murnaghan EoS, P-scale free): S3358, 11.4–23.5 GPa/300–900 K, V0 = 621.41a, 145.07 (3), 4.455 (4), −0.0140 (1), α0 4.215 (7).
Additional notes
dKT dT GPa per K
−0.0140 (1)
alpha0 1e-5 per K
4.215 (7)
P T conditions
11.4–23.5 GPa / 300–900 K
V0 fixed in fit
True