lower mantle aggregate (silicate perovskites MgSiO3 + CaSiO3)
MgSiO3 + CaSiO3 (main constituents of the lower mantle)
Stacey reciprocal K-primed · Cited · 2012
V₀
—
Unknown basis
K₀
206
GPa
Adiabatic
K′
4.200
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
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 | 1 |
Formula: MgSiO3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- —
- Method
- unknownseismological measurements / values taken directly from Stacey and Davis (adiabat)
- Sample
- Earth lower mantle (values from Stacey and Davis, seismological data)
Source
- Paper
- ANALYSIS OF THERMAL EXPANSIVITY OF SOLIDS UNDER HIGH PRESSURES
- Authors
- K. Sunil; P.K. Singh; B.S. Sharma
- DOI
- 10.1142/s0217984912501461
- Year
- 2012
- Journal
- Modern Physics Letters B
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 1. Values of input data^{2,10,19} used in the present calculations: Lower mantle — K0 (GPa) = 206, K'0 = 4.20, K'∞ = 2.41, t = 1.13. 'The main constituents of the lower mantle are silicate perovskites (MgSiO3+CaSiO3).' 'The lower mantle plot given in Fig. 3 is based on the numerical values taken directly from Stacey and Davis. These values refer to an adiabat, and not to an isotherm.'
Additional notes
K prime infinity
2.41
t Eq9
1.13
note
Aggregate lower-mantle values, not single-phase EOS; V0 not reported; values refer to an adiabat per the authors