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Medientyp: E-Artikel Titel: Raman spectra of gem‐quality variscite and metavariscite Beteiligte: Fritsch, Emmanuel; Karampelas, Stefanos; Mevellec, Jean‐Yves Erschienen: Wiley, 2017 Erschienen in: Journal of Raman Spectroscopy Sprache: Englisch DOI: 10.1002/jrs.5117 ISSN: 0377-0486; 1097-4555 Schlagwörter: Spectroscopy ; General Materials Science Entstehung: Anmerkungen: Beschreibung: <jats:p>Raman spectra were obtained on a set of five gems presented as massive variscite, from the three major sources of this gem‐quality material. In parallel, micro‐FTIR in reflectance and chemical analysis were performed on the same samples, to further characterize them. Surprisingly, four out of five samples are found to be metavariscite, which has been documented in gem quality only once before. Results of micro‐FTIR in reflectance confirmed this result. Copyright © 2017 John Wiley & Sons, Ltd.</jats:p>