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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 and Liping Wang
Anisotropic elasticity of jarosite; a high-P synchrotron XRD study
American Mineralogist (January 2010) 95 (1): 19-23


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) (sub 6) ]/[SO (sub 4) ] 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+ or -1.4 GPa and zero-pressure linear compressibilities of 3.2X10 (super -3) GPa (super -1) for the a axis and 13.6X10 (super -3) GPa (super -1) for the c axis. These parameters represent the first experimental determination of the elastic properties of jarosite.

ISSN: 0003-004X
EISSN: 1945-3027
Serial Title: American Mineralogist
Serial Volume: 95
Serial Issue: 1
Title: Anisotropic elasticity of jarosite; a high-P synchrotron XRD study
Affiliation: Los Alamos National Laboratory, Earth and Environmental Sciences Division, Los Alamos, NM, United States
Pages: 19-23
Published: 201001
Text Language: English
Publisher: Mineralogical Society of America, Washington, DC, United States
References: 28
Accession Number: 2010-014183
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: State University of New York at Stony Brook, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201009
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