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Superhydrous phase B
Mg8.99Si2.77Al0.54O18H5.25
third-order Birch-Murnaghan · Original · 2024
V₀
621.69
ų
Unit cell
K₀
147.700
GPa
Isothermal
K′
4.380
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 621.69 | 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 | 8.99 |
| Al2O3 | 0.27 |
| SiO2 | 2.77 |
| H2O | 2.625 |
Formula: Mg8.99Si2.77Al0.54O18H5.25
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
- S3359 (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
Text: 'K_T0 = 147.7 (1) GPa and K'_T0 = 4.39 (2) for S3359'. Table 1 (Birch–Murnaghan EoS, P-scale free): S3359, 14.8–22.1 GPa/300–1300 K, V0 = 621.69a, 147.7 (1), 4.38 (2), −0.0166 (2), α0 4.25 (1).
Additional notes
note
Text quotes K'_T0 = 4.39 (2) while Table 1 lists 4.38 (2)
dKT dT GPa per K
−0.0166 (2)
alpha0 1e-5 per K
4.25 (1)
P T conditions
14.8–22.1 GPa / 300–1300 K
V0 fixed in fit
True