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Space symmetry of prehnite，Ca2AI[6](Si3AIO10)(OH)2, from the Tieshan iron mineral deposit, Central China

Published online by Cambridge University Press:  05 July 2018

W.-y. Zhao ,
X.-w. Liu ,
Q.-y. Wang  and
Q.-j. Zhang
W.-y. Zhao*
Affiliation:
State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
X.-w. Liu
Affiliation:
Center of Testing and Analysis, China University of Geosciences, Wuhan 430074, China
Q.-y. Wang
Affiliation:
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
Q.-j. Zhang
Affiliation:
State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
*
* E-mail: wyzhao@mail.whut.edu.cn
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Abstract

The space symmetry of prehnite, a mineral which occurs in cavities and veins within skarn from the Tieshan iron mineral deposit, Daye, Hubei province, central China, has been determined using selected area electron diffraction (SAED) and convergent-beam electron diffraction (CBED) on the submicrometer scale. Our results confirm that natural prehnite may belong to space group Pncm. The unit-cell parameters of the prehnite investigated ( a = 0.458 nm, b = 0.555 nm and c = 1.853 nm) have been calculated using the multicrystal diffraction rings of gold, the internal standard.

Keywords

prehniteselected area electron diffractionconvergent-beam electron diffraction.
Type
Research Article
Information
Mineralogical Magazine , Volume 67 , Issue 1 , February 2003 , pp. 73 - 77
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2003

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