Raman and infrared study of hydroxyl sites in natural uvite, fluor-uvite, magnesio-foitite, dravite and elbaite tourmalines (original) (raw)

Abstract

We present the Raman and infrared spectra of different tourmaline species in the spectral range associated with the hydroxyl stretching modes, investigated through polarized Raman spectroscopy. Different lineshapes are observed for the OH spectra in uvite, fluor-uvite, magnesio-foitite, dravite and elbaite samples, and can be related to the coordination of OH in the two different structural V[O(3)]- and W[O(1)]-occupied sites. Local arrangements around the two different OH sites were assigned, and different ion substitutions for these five tourmaline species were identified. Our work with polarized Raman spectroscopy revealed that OH-stretching modes are described by totally symmetric, irreducible representations.

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Acknowledgments

The authors acknowledge financial support from the Brazilian agencies CNPq and CAPES, the Minas Gerais state agencie FAPEMIG and VALE S.A. We are very grateful to L. Garcia from the Physics Department—UFMG—for the microprobe analyses.

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Authors and Affiliations

  1. Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
    C. Fantini, M. C. Tavares, K. Krambrock, R. L. Moreira & A. Righi

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  1. C. Fantini
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  2. M. C. Tavares
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  3. K. Krambrock
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  4. R. L. Moreira
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  5. A. Righi
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Correspondence toC. Fantini.

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Fantini, C., Tavares, M.C., Krambrock, K. et al. Raman and infrared study of hydroxyl sites in natural uvite, fluor-uvite, magnesio-foitite, dravite and elbaite tourmalines.Phys Chem Minerals 41, 247–254 (2014). https://doi.org/10.1007/s00269-013-0642-0

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