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Multi-methodological investigation of kunzite, hiddenite, alexandrite, elbaite and topaz, based on laser-induced breakdown spectroscopy and conventional analytical techniques for supporting mineralogical characterization |
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| Authors: | Manuela Rossi Marcella Dell’Aglio Alessandro De Giacomo Rosalba Gaudiuso Giorgio Saverio Senesi Olga De Pascale Francesco Capitelli Fabrizio Nestola Maria Rosaria Ghiara |
| Affiliation: | 1. Department of Earth Sciences, University of Naples “Federico II”, Via Mezzocannone 8, 80134, Naples, Italy 2. Institute of Inorganic Methodologies and Plasmas-CNR, U.O.S Bari, Via Amendola 122/D, 70126, Bari, Italy 3. Department of Chemistry, University of Bari, Via Orabona 4, 70126, Bari, Italy 4. Institute of Crystallography-CNR, Via Salaria Km 29.300, 00016, Monterotondo, Rome, Italy 5. Department of Geosciences, University of Padua, Via Gradenigo 6, 35131, Padua, Italy 6. Royal Mineralogical Museum, Museum Centre of Natural and Physical Sciences, University of Naples “Federico II”, Via Mezzocannone 8, 80134, Naples, Italy |
| Abstract: | Gem-quality alexandrite, hiddenite and kunzite, elbaite and topaz minerals were characterized through a multi-methodological investigation based on EMPA-WDS, LA-ICP-MS, and laser-induced breakdown spectroscopy (LIBS). With respect to the others, the latter technique enables a simultaneous multi-elemental composition without any sample preparation and the detection of light elements, such as Li, Be and B. The criteria for the choice of minerals were: (a) the presence of chromophore elements in minor contents and/or as traces; (b) the presence of light lithophile elements (Li, Be and B); (c) different crystal chemistry complexity. The results show that LIBS can be employed in mineralogical studies for the identification and characterization of minerals, and as a fast screening method to determine the chemical composition, including the chromophore and light lithophile elements. |
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