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Título: | Chemistry, Raman and infrared spectroscopic characterization of the phosphate mineral reddingite : (MnFe)3(PO4)2(H2O,OH)3, a mineral found in lithium-bearing pegmatite. |
Autor(es): | Frost, Ray Leslie Xi, Yunfei Cipriano, Ricardo Augusto Scholz Belotti, Fernanda Maria Lagoeiro, Leonardo Evangelista |
Palavras-chave: | Raman Infrared Molecular structure Reddingite – phosphoferrite |
Data do documento: | 2012 |
Referência: | FROST, R. L. et al. Chemistry, Raman and infrared spectroscopic characterization of the phosphate mineral reddingite: (MnFe)3(PO4)2(H2O,OH)3, a mineral found in lithium-bearing pegmatite. Physics and Chemistry of Minerals, v. 39, p. 803-810, 2012. Disponível em: <https://link.springer.com/article/10.1007%2Fs00269-012-0535-7>. Acesso em: 20 de jun. 2017. |
Resumo: | Detailed investigation of an intermediate member of the reddingite–phosphoferrite series, using infrared and Raman spectroscopy, scanning electron microcopy and electron microprobe analysis, has been carried out on a homogeneous sample from a lithium-bearing pegmatite named Cigana mine, near Conselheiro Pena, Minas Gerais, Brazil. The determined formula is ðMn1:60Fe1:21Ca0:01 Mg0:01ÞP2:83ðPO4Þ2:12 ðH2O2:85F0:01ÞP2:86, indicating predominance in the reddingite member. Raman spectroscopy coupled with infrared spectroscopy supports the concept of phosphate, hydrogen phosphate and dihydrogen phosphate units in the structure of reddingite-phosphoferrite. Infrared and Raman bands attributed to water and hydroxyl stretching modes are identified. Vibrational spectroscopy adds useful information to the molecular structure of reddingite– phosphoferrite. |
URI: | http://www.repositorio.ufop.br/handle/123456789/8249 |
Link para o artigo: | https://link.springer.com/article/10.1007%2Fs00269-012-0535-7 |
DOI: | https://doi.org/10.1007/s00269-012-0535-7 |
ISSN: | 1432-2021 |
Aparece nas coleções: | DEGEO - Artigos publicados em periódicos |
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