A vibrational spectroscopic study of the sulphate mineral glauberite
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The mineral glauberite is one of many minerals formed in evaporite deposits. The mineral glauberite has been studied using a combination of scanning electron microscopy with energy dispersive X-ray analysis and infrared and Raman spectroscopy. Qualitative chemical analysis shows a homogeneous phase, composed by sulphur, calcium and sodium. Glauberite is characterized by a very intense Raman band at 1002 cm-1 with Raman bands observed at 1107, 1141, 1156 and 1169 cm-1 attributed to the sulphate ν3 antisymmetric stretching vibration. Raman bands at 619, 636, 645 and 651 cm-1 are assigned to the ν4 sulphate bending modes. Raman bands at 454, 472 and 486 cm-1 are ascribed to the ν2 sulphate bending modes. The observation of multiple bands is attributed to the loss of symmetry of the sulphate anion. Raman spectroscopy is superior to infrared spectroscopy for the determination of glauberite.
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|Item Type:||Journal Article|
|Keywords:||glauberite, sulphate, evaporite deposits, Raman spectroscopy, infrared spectroscopy|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2013 Taylor & Francis Inc.|
|Copyright Statement:||This is an Author's Accepted Manuscript of an article published in Spectroscopy Letters on 09 May 2014,
copyright Taylor & Francis, available online at: http://www.tandfonline.com/10.1080/00387010.2013.841254
|Deposited On:||05 Dec 2013 23:36|
|Last Modified:||02 Dec 2014 12:17|
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