Bridgmanite

MgSiO3

Birch-Murnaghan (order unspecified) · Original · 2015

V₀

24.45

cm³/mol

Molar

K₀

252

GPa

Isothermal

K′

4.380

dimensionless

Volume (V₀)

Value	Unit	Basis	Z
24.45	cm³/mol	Molar	—

Reported value and unit are preserved as extracted. Z (formula units per cell) is not stored yet, so molar ↔ Å³/f.u. conversion is not applied automatically.

Composition

Oxide	Molar
MgO	1
SiO2	1

Formula: MgSiO3

Conditions & method

T_ref: 298.2 K
P_ref: 0.000 GPa
Structure: perovskite (unspecified)
Method: unknown
simultaneous optimization of heat capacity, thermal expansion, adiabatic bulk modulus, and P–V–T measurements
Sample: Table 1, Perovskite column

Source

Paper: The equations of state of forsterite, wadsleyite, ringwoodite, akimotoite, MgSi…
Authors: Peter I. Dorogokupets; А. M. Dymshits; T. S. Sokolova; B. S. Danilov; Konstantin D. Litasov
DOI: 10.1016/j.rgg.2015.01.011
Year: 2015
Journal: Russian Geology and Geophysics
Origin: Original (measured or fitted in the source paper)

Evidence from the paper

Table 1. Parameters of equations of state... Perovskite: V0, cm3/mol = 24.45; K0, GPa = 252.0; K′ = 4.38; k = 5. 'An equation of state for perovskite was set up with the use of the P–V–T measurements from (Katsura et al., 2009c; Tange et al., 2012)... as well as measurements of volume at ambient pressure (Knittle et al., 1986; Ross and Hazen, 1989) and heat capacity from (Akaogi et al., 2008).'

Additional notes

U0 kJ per mol

-1472.5

theta01 K

7.5

theta02 K

7.5

gamma0

1.7

beta

3.0

gamma inf

note

Text states 'The V0 values are usually taken from reference data, and the bulk modulus under standard conditions (K0) is determined from ultrasonic measurements, i.e., recalculated from the adiabatic bulk modulus'; Table 1 caption describes all as fitted parameters obtained by simultaneous optimization.