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FT-IR and Raman microscopic study at 293 K and 77 K of celestine, SrS04, from the middle triassic limestone (Muschelkalk) in Winterswijk, The Netherlands

Published online by Cambridge University Press:  01 April 2016

J. Theo Kloprogge ,
Huada Ruan ,
Loc V. Duong  and
Ray L. Frost
J. Theo Kloprogge*
Affiliation:
Centre for Instrumental and Developmental Chemistry, Faculty of Science, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Q 4001, Australia
Huada Ruan
Affiliation:
Centre for Instrumental and Developmental Chemistry, Faculty of Science, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Q 4001, Australia
Loc V. Duong
Affiliation:
Centre for Instrumental and Developmental Chemistry, Faculty of Science, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Q 4001, Australia Analytical Electron Microscopy Facility, Faculty of Science, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Q 4001, Australia
Ray L. Frost
Affiliation:
Centre for Instrumental and Developmental Chemistry, Faculty of Science, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane Q 4001, Australia
*
*Corresponding author: phone +61 7 3864 2184, fax +61 7 3864 1804, E-mailt.kloprogge@qut.edu.au

Abstract

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This paper describes the Raman and infrared spectroscopy of SrSO4 or celestine from the Muschelkalk of Winterswijk, The Netherlands. The infrared absorption spectrum is characterised by the SO42-modes V1 at 991 cm-1, v3 at 1201, 1138 and 1091 cm-1, and v4 at 643 and 611 cm-1. An unidentified band is observed at 1248 cm-1. In the Raman spectrum at 293 K the V1 mode is found at 1000 cm-1 and is split in two bands at 1001 and 1003 cm-1 upon cooling to 77 K.The v2 mode, not observed in the infrared spectrum, is observed as a doublet at 460 and 453 cm-1. The v3 mode is represented by four bands in the Raman spectrum at 1187, 1158, 1110 and 1093 cm-1 and the v4 mode as three bands at 656, 638 and 620 cm-1. Cooling to 77 K results in a general decrease in bandwidth and a minor shift in frequencies. A decrease in intensities is observed upon cooling to 77 K due to movement of the Sr atom towards one or more of the oxygen atoms in the sulfate group.

Keywords

celestineinfrared spectroscopyRaman microscopystrontium sulfate
Type
Research Article
Information
Netherlands Journal of Geosciences , Volume 80 , Issue 2 , June 2001 , pp. 41 - 47
Copyright
Copyright © Stichting Netherlands Journal of Geosciences 2001

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