Compressibility of a natural smithsonite ZnCO^sub 3^ up to 50 GPa

Natural smithsonite (ZnCO3) has been investigated by synchrotron radiation X-ray diffraction and X-ray absorption spectroscopy combined with diamond anvil cells up to 50 GPa at room temperature. At ambient pressure, smithsonite adopts as calcite phase with a=4.6557(11) A and c=15.072(12) A. Both exp...

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Published inHigh pressure research Vol. 34; no. 1; p. 89
Main Authors Gao, Jing, Zhu, Feng, Lai, Xiao-jing, Huang, Rong, Qin, Shan, Chen, Dong-liang, Liu, Jing, Zheng, Li-Rong, Wu, Xiang
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Ltd 01.03.2014
Subjects
Anisotropy
Diffraction
High temperature
Phase transitions
Pressure
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Summary:Natural smithsonite (ZnCO3) has been investigated by synchrotron radiation X-ray diffraction and X-ray absorption spectroscopy combined with diamond anvil cells up to 50 GPa at room temperature. At ambient pressure, smithsonite adopts as calcite phase with a=4.6557(11) A and c=15.072(12) A. Both experimental results demonstrate that no phase transition occurs in the present examined pressure range. Isothermal pressure-volume relationship of smithsonite can be well described by the third-order Birch-Murnaghan equation of state with V0=284.6(7) A3, B0=126.8(6) GPa and (fixed). The axial compressibility of smithsonite presents clear anisotropy with ...=3.60x10... A GPa...>...=1.21x10...A GPa ... ZnCO...-smithsonite is proposed to approach the NaCl rocksalt structure on compression. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0895-7959
1477-2299