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The Canadian Mineralogist; December 2007; v. 45; no. 6; p. 1495-1500; DOI: 10.3749/canmin.45.6.1495
© 2007 Mineralogical Association of Canada
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Articles

THE APPLICATION OF MICRO-RAMAN SPECTROSCOPY TO DISTINGUISH CARLOSTURANITE FROM SERPENTINE-GROUP MINERALS

Elena Belluso1,§, Elisa Fornero2, Simona Cairo2, Giovanni Albertazzi2 and Caterina Rinaudo2

1 Dipartimento di Scienze Mineralogiche e Petrologiche e CNR, Istituto di Geoscienze e Georisorse, sez. di Torino, Via Valperga Caluso 35, I–10100 Torino, Italy
2 Dipartimento di Scienze dell’Ambiente e della Vita, Via Bellini 25/g, I–15100 Alessandria, Italy

§ E-mail address: elena.belluso{at}unito.it

Carlosturanite, a mineral with a serpentine-like structure, grows mainly with a fibrous habit. We have analyzed samples with both pure carlosturanite and associations of carlosturanite and chrysotile using micro-Raman spectroscopy, a quick and non-destructive method of identifying different materials and mineral phases through direct analysis of bundles of fibers. Raman analysis was carried out on samples after first submitting them to chemical and mineralogical analysis using traditional techniques, i.e., scanning electron microscopy (SEM) and transmission electron microscopy (TEM), with results evaluated in light of energy-dispersive spectrometry (EDS) and X-ray powder diffractometry (XRPD). This approach allowed us to determine the Raman spectrum associated with carlosturanite. Micro-Raman spectroscopy makes it possible to identify the different phases in these associations of minerals.

Keywords: carlosturanite, micro-Raman spectroscopy, transmission electron microscopy.






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