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Title: | The molecular structure of matioliite NaMgAl5(PO4)4(OH)6 2(H2O) - a pegmatite mineral from Minas Gerais, Brazil. |
Authors: | Cipriano, Ricardo Augusto Scholz Xi, Yunfei Frost, Ray Leslie |
Keywords: | Matioliite Phosphate Pegmatite Infrared spectroscopy Scanning electron microscopy |
Issue Date: | 2013 |
Citation: | SCHOLZ, R. A.; XI, Y.; FROST, R. L. The molecular structure of matioliite NaMgAl5(PO4)4(OH)6 2(H2O) - a pegmatite mineral from Minas Gerais, Brazil. Journal of Molecular Structure, v. 1033, p. 265-271, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286012008897> . Acesso em: 07 out. 2014. |
Abstract: | Detailed spectroscopic and chemical investigation of matioliite, including infrared and Raman spectroscopy, scanning electron microscopy and electron probe microanalysis has been carried out on homogeneous samples from the Gentil pegmatite, Mendes Pimentel, Minas Gerais, Brazil. The chemical composition is (wt.%): FeO 2.20, CaO 0.05, Na2O 1.28, MnO 0.06, Al2O3 39.82, P2O5 42.7, MgO 4.68, F 0.02 and H2O 9.19; total 100.00. The mineral crystallize in the monoclinic crystal system, C2/c space group, with a = 25.075(1) Å, b = 5.0470(3) Å, c = 13.4370(7) Å, b = 110.97(3)_, V = 1587.9(4) Å3, Z = 4. Raman spectroscopy coupled with infrared spectroscopy supports the concept of phosphate, hydrogen phosphate and dihydrogen phosphate units in the structure of matioliite. Infrared and Raman bands attributed to water and hydroxyl stretching modes are identified. Vibrational spectroscopy adds useful information to the molecular structure of matioliite. |
URI: | http://www.repositorio.ufop.br/handle/123456789/4255 |
metadata.dc.identifier.doi: | https://doi.org/10.1016/j.molstruc.2012.09.055 |
ISSN: | 0022-2860 |
metadata.dc.rights.license: | O periódico Journal of Molecular Structure concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3487791403136. |
Appears in Collections: | DEGEO - Artigos publicados em periódicos |
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ARTIGO_MolecularStructureMatioliite.pdf | 905,33 kB | Adobe PDF | View/Open |
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