Crystal structure of calcium-ferrite type NaAlSiO4 up to 45 GPa

10.2138/am-2022-8432 · 2023 · American Mineralogist

Fei Qin; Ye Wu; Shengchao Xue; Dongzhou Zhang; Xiang Wu; Steven D. Jacobsen

9 EOS records from this paper

Phase

Composition

T_ref

V₀

K₀ (GPa)

K′

EOS model

Method note

Origin

oxide	molar
Na2O	0.465
Al2O3	0.51
SiO2	1

—

241.6 Å³

Unit cell

220

2.600

third-order Birch-Murnaghan

—

Original

oxide	molar
FeO	0.013
Fe2O3	0.0585
Na2O	0.44
Al2O3	0.495
SiO2	0.94

—

244.2 Å³

Unit cell

211

2.600

third-order Birch-Murnaghan

—

Original

oxide	molar
Na2O	0.465
Al2O3	0.51
SiO2	1

—

201

unknown

—

Cited

oxide	molar
FeO	0.013
Fe2O3	0.0585
Na2O	0.44
Al2O3	0.495
SiO2	0.94

—

208

unknown

—

Cited

oxide	molar
FeO	0.013
Fe2O3	0.0585
Na2O	0.44
Al2O3	0.495
SiO2	0.94

—

202

unknown

—

Cited

CF phase (Guignot and Andrault 2004)

—

185

—

unknown

—

Cited

CF phase (Imada et al. 2012)

—

214

3.600

unknown

—

Cited

CF phase (Dubrovinsky et al. 2002)

—

220

4.100

unknown

—

Cited

oxide	molar
MgO	1
Al2O3	1

—

205

—

unknown

—

Cited