Raman spectroscopy of the arsenates and sulphates of the tsumcorite mineral group
The structure of a selection of arsenate and sulphate based minerals of the tsumcorite group has been studied by the combination of Raman and infrared spectroscopy. A comparison is made with the sulphate bearing mineral natrochalcite. Isomorphic substitution of sulphate for arsenate is observed for gartrellite and thometzekite. The position of the hydroxyl and water stretching vibrations are related to the strength of the hydrogen bond formed between the OH unit and the AsO4 anion. Estimates of the hydrogen bond distances are calculkated using a Libowitzky type function. Characteristic Raman spectra of the minerals enable the assignment of the bands to specific vibrational modes.
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|Item Type:||Journal Article|
|Keywords:||Raman spectroscopy, tsumcorite, natrochalcite, gartrellite|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Past > Schools > School of Physical & Chemical Sciences
|Copyright Owner:||Copyright 2004 John Wiley & Sons|
|Copyright Statement:||The definite version is available on publication at www3.interscience.wiley.com|
|Deposited On:||10 Mar 2005|
|Last Modified:||29 Feb 2012 23:04|
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