Thermal expansion of brucite, Mg(OH)2

S. A.T. Redfern; B. J. Wood

Thermal expansion of brucite, Mg(OH)₂

S. A.T. Redfern, B. J. Wood

University of Manchester

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

21 Citations (Scopus)

Abstract

The lattice parameters of brucite, Mg(OH)₂, have been measured between 20 and 310°C at atmospheric pressure. The thermal expansion is strongly anisotropic with a high coefficient of linear expansion (α₃) parallel to the z axis. This leads to an overall volume coefficient of expansion (average of 10.9 × 10^-5/K) that is several times greater than estimates based on amphiboles and other hydrous minerals. Individual expansion coefficients are α₁ = α₂ = 1.73 × 10^-5 - 0.13 × 10^-7T ± 0.17 × 10^-5, α₃ = 3.23 × 10^-5 + 2.65 × 10^-7T ± 0.32 × 10^-5, and α_vol = 6.70 × 10^-5 + 2.37 × 10^-7T ± 0.67 × 10^-5, where T is the temperature between 20 and 310°C. -Authors

Original language	English
Pages (from-to)	1129-1132
Number of pages	4
Journal	American Mineralogist
Volume	77
Issue number	9-10
Publication status	Published - 1992
Externally published	Yes

ASJC Scopus Subject Areas

Geophysics
Geochemistry and Petrology

Cite this

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title = "Thermal expansion of brucite, Mg(OH)2",

abstract = "The lattice parameters of brucite, Mg(OH)2, have been measured between 20 and 310°C at atmospheric pressure. The thermal expansion is strongly anisotropic with a high coefficient of linear expansion (α3) parallel to the z axis. This leads to an overall volume coefficient of expansion (average of 10.9 × 10-5/K) that is several times greater than estimates based on amphiboles and other hydrous minerals. Individual expansion coefficients are α1 = α2 = 1.73 × 10-5 - 0.13 × 10-7T ± 0.17 × 10-5, α3 = 3.23 × 10-5 + 2.65 × 10-7T ± 0.32 × 10-5, and αvol = 6.70 × 10-5 + 2.37 × 10-7T ± 0.67 × 10-5, where T is the temperature between 20 and 310°C. -Authors",

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T1 - Thermal expansion of brucite, Mg(OH)2

AU - Redfern, S. A.T.

AU - Wood, B. J.

PY - 1992

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N2 - The lattice parameters of brucite, Mg(OH)2, have been measured between 20 and 310°C at atmospheric pressure. The thermal expansion is strongly anisotropic with a high coefficient of linear expansion (α3) parallel to the z axis. This leads to an overall volume coefficient of expansion (average of 10.9 × 10-5/K) that is several times greater than estimates based on amphiboles and other hydrous minerals. Individual expansion coefficients are α1 = α2 = 1.73 × 10-5 - 0.13 × 10-7T ± 0.17 × 10-5, α3 = 3.23 × 10-5 + 2.65 × 10-7T ± 0.32 × 10-5, and αvol = 6.70 × 10-5 + 2.37 × 10-7T ± 0.67 × 10-5, where T is the temperature between 20 and 310°C. -Authors

AB - The lattice parameters of brucite, Mg(OH)2, have been measured between 20 and 310°C at atmospheric pressure. The thermal expansion is strongly anisotropic with a high coefficient of linear expansion (α3) parallel to the z axis. This leads to an overall volume coefficient of expansion (average of 10.9 × 10-5/K) that is several times greater than estimates based on amphiboles and other hydrous minerals. Individual expansion coefficients are α1 = α2 = 1.73 × 10-5 - 0.13 × 10-7T ± 0.17 × 10-5, α3 = 3.23 × 10-5 + 2.65 × 10-7T ± 0.32 × 10-5, and αvol = 6.70 × 10-5 + 2.37 × 10-7T ± 0.67 × 10-5, where T is the temperature between 20 and 310°C. -Authors

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Thermal expansion of brucite, Mg(OH)₂

Abstract

ASJC Scopus Subject Areas

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