A Raman spectroscopic study of uranyl minerals from Cornwall, UK

R. J P Driscoll, D. Wolverson, J. M. Mitchels, J. M. Skelton, Stephen C. Parker, M. Molinari, I. Khan, D. Geeson, Geoffrey C. Allen

Research output: Contribution to journalArticle

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Abstract

In the fields of nuclear forensics, geology and environmental science, it is important to be able to rapidly identify an unknown sample of uranyl mineral. Raman spectroscopy provides a fast, non-destructive and portable strategy for collecting data, which can then be compared against a set of known experimental information. We present a Raman study of a selection of uranyl minerals from Cornwall, UK. This includes the first Raman spectrum published for the uranyl arsenate mineral, novácekite. These spectra were collected under a standard set of conditions, using three excitation wavelengths, 325, 532 and 785 nm, the latter typically providing spectra with little fluorescence and the best resolution. The vibrational properties of these minerals are characterised by the symmetric stretching mode of the uranyl cation, seen between 750-900 cm-1, though the exact position varies with respect to the local environment. To discriminate between samples, the rest of the spectrum must be considered; the poly-anions in the structure provide a fingerprint set of Raman bands. An added complication occurs when samples of the same mineral from different mines demonstrate variations in their Raman spectra; this emphasises the need for data to be collected from a variety of locations, but also suggests that other experimental techniques could provide complementary information.

Original languageEnglish
Pages (from-to)59137-59149
Number of pages13
JournalRSC Advances
Volume4
Issue number103
DOIs
Publication statusPublished - 31 Oct 2014
Externally publishedYes

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Minerals
Arsenate minerals
Raman scattering
Geology
Stretching
Anions
Raman spectroscopy
Cations
Negative ions
Positive ions
Fluorescence
Wavelength

Cite this

Driscoll, R. J. P., Wolverson, D., Mitchels, J. M., Skelton, J. M., Parker, S. C., Molinari, M., ... Allen, G. C. (2014). A Raman spectroscopic study of uranyl minerals from Cornwall, UK. RSC Advances, 4(103), 59137-59149. https://doi.org/10.1039/c4ra09361e
Driscoll, R. J P ; Wolverson, D. ; Mitchels, J. M. ; Skelton, J. M. ; Parker, Stephen C. ; Molinari, M. ; Khan, I. ; Geeson, D. ; Allen, Geoffrey C. / A Raman spectroscopic study of uranyl minerals from Cornwall, UK. In: RSC Advances. 2014 ; Vol. 4, No. 103. pp. 59137-59149.
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Driscoll, RJP, Wolverson, D, Mitchels, JM, Skelton, JM, Parker, SC, Molinari, M, Khan, I, Geeson, D & Allen, GC 2014, 'A Raman spectroscopic study of uranyl minerals from Cornwall, UK', RSC Advances, vol. 4, no. 103, pp. 59137-59149. https://doi.org/10.1039/c4ra09361e

A Raman spectroscopic study of uranyl minerals from Cornwall, UK. / Driscoll, R. J P; Wolverson, D.; Mitchels, J. M.; Skelton, J. M.; Parker, Stephen C.; Molinari, M.; Khan, I.; Geeson, D.; Allen, Geoffrey C.

In: RSC Advances, Vol. 4, No. 103, 31.10.2014, p. 59137-59149.

Research output: Contribution to journalArticle

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Driscoll RJP, Wolverson D, Mitchels JM, Skelton JM, Parker SC, Molinari M et al. A Raman spectroscopic study of uranyl minerals from Cornwall, UK. RSC Advances. 2014 Oct 31;4(103):59137-59149. https://doi.org/10.1039/c4ra09361e