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Revista de la Sociedad Química de México
Print version ISSN 0583-7693
Abstract
AUGSBURGER, M. S.; PEDREGOSA, J. C. and SOSA, G. M.. Infrared Spectroscopy and X-Ray Diffractometry Assessment of Order-Disorder in Oxide Minerals (Mn/Fe)(Nb/Ta)2O6. Rev. Soc. Quím. Méx [online]. 2000, vol.44, n.2, pp.151-154. ISSN 0583-7693.
The degree of cation order of four columbite-tantalite from San Luis Range (Argentina) was evaluated from X-ray diffractometry and FTIR spectroscopy. Data were compared with those obtained by Mössbauer spectrometry. Based on structural evidences, a general assignment for the Nb/Ta-O6 and Fe/Mn-O6 octahedra internal vibrations is proposed.
Keywords : columbite-tantalite; FTIR spectroscopy; X-ray diffractometry; Mössbauer.