Phase D
MgSi2H2O6
unknown · Cited · 2015
V₀
—
Polyhedron
K₀
166
GPa
Unknown
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Polyhedron | — |
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 | 1 |
| SiO2 | 2 |
| H2O | 1 |
Formula: MgSi2H2O6
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- —
- Method
- literature compilation / cited valueliterature compilation (Table 4)
- Sample
- literature value (Table 4 compilation)
Source
- Paper
- Equation of state and elasticity of the 3.65 Å phase: Implications for the X-di…
- Authors
- Mainak Mookherjee; S. Speziale; Hauke Marquardt; Sandro Jahn; Bernd Wunder; Monika Koch‐Müller; Hanns‐Peter Liermann
- DOI
- 10.2138/am-2015-5312
- Year
- 2015
- Journal
- American Mineralogist
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 4 (Dense hydrous magnesium silicates, DHMS): Phase D | MgSi2H2O6 | 3.459 | 166.0 | 18.49 | Frost and Fei (1999); DHMS phases such as phase D with silicon atom in octahedral coordination [SiVI] have both higher density and bulk modulus
Additional notes
rho0 g cm3
3.459
H2O wt percent
18.49
reference
Frost and Fei (1999)
note
Deep-mantle-capable DHMS phase; included as closely related hydrous phase with tabulated EOS-related bulk modulus