Anisotropic elasticity of jarosite: A high-P synchrotron XRD study

Hongwu Xu; Yusheng Zhao; Jianzhong Zhang; Yuejian Wang; Donald D. Hickmott; Luke L. Daemen; Monika A. Hartl; Liping Wang

doi:10.2138/am.2010.3280

Anisotropic elasticity of jarosite: A high-P synchrotron XRD study

Hongwu Xu, Yusheng Zhao, Jianzhong Zhang, Yuejian Wang, Donald D. Hickmott, Luke L. Daemen, Monika A. Hartl, Liping Wang

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

21 Scopus citations

Abstract

The elastic properties of jarosite were investigated using synchrotron X-ray diffraction coupled with a multi-anvil apparatus at pressures up to 8.1 GPa. With increasing pressure, the c dimension contracts much more rapidly than a, resulting in a large anisotropy in compression. This behavior is consistent with the layered nature of the jarosite structure, in which the (001) [Fe(O,.OH)₆]/[SO₄] sheets are held together via relatively weak K-O and hydrogen bonds. Fitting of the measured unit-cell parameters to the second-order Birch-Murnaghan equation of state yielded a bulk modulus of 55.7 ± 1.4 GPa and zero-pressure linear compressibilities of 3.2 x 10^-3 GPa^-1 for the a axis and 13.6 × 10^-3 GPa^-1 for the c axis. These parameters represent the first experimental determination of the elastic properties of jarosite.

Original language	English
Pages (from-to)	19-23
Number of pages	5
Journal	American Mineralogist
Volume	95
Issue number	1
DOIs	https://doi.org/10.2138/am.2010.3280
State	Published - Jan 2010
Externally published	Yes

Keywords

Bulk modulus
Compressibility
Elastic properties
Equation of state
Jarosite
Synchrotron x-ray diffraction

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10.2138/am.2010.3280

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title = "Anisotropic elasticity of jarosite: A high-P synchrotron XRD study",

abstract = "The elastic properties of jarosite were investigated using synchrotron X-ray diffraction coupled with a multi-anvil apparatus at pressures up to 8.1 GPa. With increasing pressure, the c dimension contracts much more rapidly than a, resulting in a large anisotropy in compression. This behavior is consistent with the layered nature of the jarosite structure, in which the (001) [Fe(O,.OH)6]/[SO4] sheets are held together via relatively weak K-O and hydrogen bonds. Fitting of the measured unit-cell parameters to the second-order Birch-Murnaghan equation of state yielded a bulk modulus of 55.7 ± 1.4 GPa and zero-pressure linear compressibilities of 3.2 x 10-3 GPa-1 for the a axis and 13.6 × 10-3 GPa-1 for the c axis. These parameters represent the first experimental determination of the elastic properties of jarosite.",

keywords = "Bulk modulus, Compressibility, Elastic properties, Equation of state, Jarosite, Synchrotron x-ray diffraction",

author = "Hongwu Xu and Yusheng Zhao and Jianzhong Zhang and Yuejian Wang and Hickmott, {Donald D.} and Daemen, {Luke L.} and Hartl, {Monika A.} and Liping Wang",

year = "2010",

month = jan,

doi = "10.2138/am.2010.3280",

language = "English",

volume = "95",

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publisher = "Mineralogical Society of America",

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T2 - A high-P synchrotron XRD study

AU - Xu, Hongwu

AU - Zhao, Yusheng

AU - Zhang, Jianzhong

AU - Wang, Yuejian

AU - Hickmott, Donald D.

AU - Daemen, Luke L.

AU - Hartl, Monika A.

AU - Wang, Liping

PY - 2010/1

Y1 - 2010/1

N2 - The elastic properties of jarosite were investigated using synchrotron X-ray diffraction coupled with a multi-anvil apparatus at pressures up to 8.1 GPa. With increasing pressure, the c dimension contracts much more rapidly than a, resulting in a large anisotropy in compression. This behavior is consistent with the layered nature of the jarosite structure, in which the (001) [Fe(O,.OH)6]/[SO4] sheets are held together via relatively weak K-O and hydrogen bonds. Fitting of the measured unit-cell parameters to the second-order Birch-Murnaghan equation of state yielded a bulk modulus of 55.7 ± 1.4 GPa and zero-pressure linear compressibilities of 3.2 x 10-3 GPa-1 for the a axis and 13.6 × 10-3 GPa-1 for the c axis. These parameters represent the first experimental determination of the elastic properties of jarosite.

AB - The elastic properties of jarosite were investigated using synchrotron X-ray diffraction coupled with a multi-anvil apparatus at pressures up to 8.1 GPa. With increasing pressure, the c dimension contracts much more rapidly than a, resulting in a large anisotropy in compression. This behavior is consistent with the layered nature of the jarosite structure, in which the (001) [Fe(O,.OH)6]/[SO4] sheets are held together via relatively weak K-O and hydrogen bonds. Fitting of the measured unit-cell parameters to the second-order Birch-Murnaghan equation of state yielded a bulk modulus of 55.7 ± 1.4 GPa and zero-pressure linear compressibilities of 3.2 x 10-3 GPa-1 for the a axis and 13.6 × 10-3 GPa-1 for the c axis. These parameters represent the first experimental determination of the elastic properties of jarosite.

KW - Bulk modulus

KW - Compressibility

KW - Elastic properties

KW - Equation of state

KW - Jarosite

KW - Synchrotron x-ray diffraction

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DO - 10.2138/am.2010.3280

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VL - 95

SP - 19

EP - 23

JO - American Mineralogist

JF - American Mineralogist

IS - 1

ER -

Anisotropic elasticity of jarosite: A high-P synchrotron XRD study

Abstract

Keywords

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