The mineral nealite Pb4Fe2+(AsO3)2Cl4•2H2O : a Raman spectroscopic study
Frost, Ray L. & Bahfenne, Silmarilly (2011) The mineral nealite Pb4Fe2+(AsO3)2Cl4•2H2O : a Raman spectroscopic study. Spectroscopy Letters, 44(1), pp. 22-26.
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Abstract
The mineral nealite Pb4Fe2+(AsO3)2Cl4•2H2O is of archaeological significance as it is man made mineral formed through the dumping of mine wastes in the sea. The mineral has been studied by Raman spectroscopy. Raman spectroscopy identifies intense Raman bands at 708 and 732 cm-1 assigned to AsO33- stretching vibrations. In addition low intensity bands are observed at 604 and 632 cm-1 which are attributed to As2O42- symmetric and antisymmetric stretching modes. Low intensity Raman band is observed at 831 cm-1 and is assigned to the AsO44- stretching vibration. Intense Raman bands at 149 and 183 cm-1 are attributed to M-Cl stretching vibrations. Raman spectroscopy identifies arsenic anions in different oxidation states in the mineral. The molecular structure of the mineral nealite, as indicated by Raman spectroscopy, is more complex than has been reported by previous studies.
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| ID Code: | 39636 |
|---|---|
| Item Type: | Journal Article |
| Keywords: | nealite, Raman spectroscopy, arsenite, archaeology |
| DOI: | 10.1080/00387010903431262 |
| ISSN: | 0038-7010 |
| Subjects: | Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606) |
| Divisions: | Past > Schools > Chemistry Past > QUT Faculties & Divisions > Faculty of Science and Technology |
| Copyright Owner: | Copyright 2011 Taylor & Francis |
| Deposited On: | 25 Jan 2011 07:54 |
| Last Modified: | 01 Jan 2012 00:10 |
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