An infrared and Raman spectroscopic study of the uranyl micas

Frost, Ray L. (2004) An infrared and Raman spectroscopic study of the uranyl micas. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 60(7), pp. 1469-1480.


View at publisher


Vibrational spectroscopy using a combination of infrared and Raman spectroscopy has been used to study the uranyl micas also known as the autunite minerals, of general formula M(UO2)2(XO4)2.8-12H2O where M may be Ba, Ca, Cu, Fe2+, Mg, Mn2+ or ½(HAl) and X is As, or P. Included in these minerals are autunite, metautunite, torbernite, metatorbernite, metazeunerite, saléeite and sabugalite. Compared with the results of infrared spectroscopy, Raman microscopy shows excellent band separation enabling the separation and identification of bands attributed to (UO2)2+ units, PO4 and AsO4 units. Common to all spectra were bands at around 900 and 818 cm-1, attributed to the antisymmetric and symmetric stretching vibrations of the (UO2)2+ units. Water in autunites is in a highly structured arrangement in the interlayer of the uranyl micas. Water molecules are differentiated according to the strength of the hydrogen bonds formed between the water and the adjacent uranyl-phosphate or uranyl-arsenate surfaces and the hydration sphere of the interlayer cation.

Impact and interest:

41 citations in Scopus
Search Google Scholar™
48 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

1,152 since deposited on 10 Mar 2005
229 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 801
Item Type: Journal Article
Refereed: Yes
Keywords: autunite, metautunite, arsenate, phosphate, vanadate, Raman spectroscopy
DOI: 10.1016/j.saa.2003.08.013
ISSN: 1386-1425
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 2004 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher: This journal is available online.
Deposited On: 10 Mar 2005 00:00
Last Modified: 29 Feb 2012 13:08

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page