Peisleyite an unusual mixed anion mineral-a vibrational spectroscopic study
Frost, Ray L., Mills, Stuart J., & Weier, Matt L. (2005) Peisleyite an unusual mixed anion mineral-a vibrational spectroscopic study. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 61(1-2), pp. 177-84.
The mineral peisleyite has been studied using a combination of electron microscopy and vibrational spectroscopy. SEM photomicrographs reveal that the peisleyite morphology consists of an array of small needle like crystals of around 1 μm in length with a thickness of less than 0.1 μm. Raman spectroscopy in the hydroxyl stretching region shows an intense band at 3506 cm-1 assigned to the symmetric stretching mode of the OH units. Four bands are observed at 3564, 3404, 3250 and 3135 cm-1 in the infrared spectrum. These wavenumbers enable an estimation of the hydrogen bond distances 3.052(5), 2.801(0), 2.705(6) and 2.683(6) Å. Two intense Raman bands are observed at 1023 and 989 cm-1 and are assigned to the SO4 and PO4 symmetric stretching modes. Other bands are observed at 1356, 1252, 1235, 1152, 1128, 1098 and 1067 cm-1. The bands at 1067 is attributed to AlOH deformation vibrations. Bands in the low wavenumber region are assigned to the ν4 and ν2 out of plane bending modes of the SO4 and PO4 units. Raman spectroscopy is a useful tool in determining the vibrational spectroscopy of mixed hydrated multianion minerals such as peisleyite. Information on such a mineral would be difficult to obtain by other means.
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|Item Type:||Journal Article|
|Additional Information:||Note: Co-author, Stuart Mills is affiliated with Geosciences, Museum Victoria and CSIRO Minerals|
|Keywords:||peisleyite, sulphate, phosphate, Raman spectroscopy, infrared spectroscopy, Toms phosphate quarry|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2005 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||14 Mar 2005 00:00|
|Last Modified:||29 Feb 2012 13:14|
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