Stishovite
SiO2
modified Tait · Original · 2013
V₀
1.401
kJ kbar-1
Molar
K₀
309
GPa
Isothermal
K′
4.600
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 1.401 | kJ kbar-1 | 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 |
|---|---|
| SiO2 | 1 |
Formula: SiO2
Conditions & method
- Tref
- 298 K
- Pref
- 0.000 GPa
- Structure
- rutile-type (stishovite)
- Method
- thermodynamic / mineral physics modelinternally consistent thermodynamic dataset (THERMOCALC)
- Sample
- stv end-member, THERMOCALC dataset tc-ds62 (Table 1)
Source
- Paper
- New Thermodynamic Models and Calculated Phase Equilibria in NCFMAS for Basic an…
- Authors
- T. J. B. Holland; N. F. C. Hudson; Roger Powell; B. Harte
- DOI
- 10.1093/petrology/egt035
- Year
- 2013
- Journal
- Journal of Petrology
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 1: stv | V 1.401 | K0 3090.0 | K0' 4.60 | K0'' -0.0015; stishovite is a modelled lower-mantle phase ('stishovite makes up a remarkably constant, but small (around 10%) proportion at all pressures' in MORB).
Additional notes
K0 second derivative
-0.0015
K0 second derivative unit
kbar-1
a0 thermal expansion
1.58e-5 K-1