High-pressure behaviour and equation of state of calcite, CaCO3

Simon A.T. Redfern; Ross J. Angel

doi:10.1007/s004100050471

High-pressure behaviour and equation of state of calcite, CaCO₃

Simon A.T. Redfern^*, Ross J. Angel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

65 Citations (Scopus)

Abstract

The high-pressure response of the cell parameters of calcite, CaCO₃, has been investigated by single crystal X-ray diffraction. The unit cell parameters have been refined from 0 to 1.435 GPa, and the linear and volume compressibilities have been measured as β_a = 2.62(2) × 10^-3 GPa^-1, β_c = 7.94(7) × 10^-3 GPa^-1, β_ν = 13.12 × 10^-3 GPa^-1. The bulk modulus has been obtained from a fit to the Birch-Murnaghan equation of state, giving K₀ = 73.46 ± 0.27 GPa and V₀ = 367.789 ± 0.004 Å³ with K′ = 4. Combined with earlier data for magnesite, ankerite and dolomite, these data suggest that K₀V₀ is a constant for the Ca-Mg rhombohedral carbonates.

Original language	English
Pages (from-to)	102-106
Number of pages	5
Journal	Contributions to Mineralogy and Petrology
Volume	134
Issue number	1
DOIs	https://doi.org/10.1007/s004100050471
Publication status	Published - 1999
Externally published	Yes

ASJC Scopus Subject Areas

Geophysics
Geochemistry and Petrology

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title = "High-pressure behaviour and equation of state of calcite, CaCO3",

abstract = "The high-pressure response of the cell parameters of calcite, CaCO3, has been investigated by single crystal X-ray diffraction. The unit cell parameters have been refined from 0 to 1.435 GPa, and the linear and volume compressibilities have been measured as βa = 2.62(2) × 10-3 GPa-1, βc = 7.94(7) × 10-3 GPa-1, βν = 13.12 × 10-3 GPa-1. The bulk modulus has been obtained from a fit to the Birch-Murnaghan equation of state, giving K0 = 73.46 ± 0.27 GPa and V0 = 367.789 ± 0.004 {\AA}3 with K′ = 4. Combined with earlier data for magnesite, ankerite and dolomite, these data suggest that K0V0 is a constant for the Ca-Mg rhombohedral carbonates.",

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AU - Redfern, Simon A.T.

AU - Angel, Ross J.

PY - 1999

Y1 - 1999

N2 - The high-pressure response of the cell parameters of calcite, CaCO3, has been investigated by single crystal X-ray diffraction. The unit cell parameters have been refined from 0 to 1.435 GPa, and the linear and volume compressibilities have been measured as βa = 2.62(2) × 10-3 GPa-1, βc = 7.94(7) × 10-3 GPa-1, βν = 13.12 × 10-3 GPa-1. The bulk modulus has been obtained from a fit to the Birch-Murnaghan equation of state, giving K0 = 73.46 ± 0.27 GPa and V0 = 367.789 ± 0.004 Å3 with K′ = 4. Combined with earlier data for magnesite, ankerite and dolomite, these data suggest that K0V0 is a constant for the Ca-Mg rhombohedral carbonates.

AB - The high-pressure response of the cell parameters of calcite, CaCO3, has been investigated by single crystal X-ray diffraction. The unit cell parameters have been refined from 0 to 1.435 GPa, and the linear and volume compressibilities have been measured as βa = 2.62(2) × 10-3 GPa-1, βc = 7.94(7) × 10-3 GPa-1, βν = 13.12 × 10-3 GPa-1. The bulk modulus has been obtained from a fit to the Birch-Murnaghan equation of state, giving K0 = 73.46 ± 0.27 GPa and V0 = 367.789 ± 0.004 Å3 with K′ = 4. Combined with earlier data for magnesite, ankerite and dolomite, these data suggest that K0V0 is a constant for the Ca-Mg rhombohedral carbonates.

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High-pressure behaviour and equation of state of calcite, CaCO₃

Abstract

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