The phosphate mineral arrojadite-(KFe) and its spectroscopic characterization.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorFrost, Ray L.-
Autor(es): dc.creatorXi, Yunfei-
Autor(es): dc.creatorScholz, Ricardo Augusto-
Autor(es): dc.creatorHorta, Laura Frota Campos-
Data de aceite: dc.date.accessioned2019-11-06T13:31:44Z-
Data de disponibilização: dc.date.available2019-11-06T13:31:44Z-
Data de envio: dc.date.issued2014-12-17-
Data de envio: dc.date.issued2014-12-17-
Data de envio: dc.date.issued2013-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4188-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/557299-
Descrição: dc.descriptionThe arrojadite- (KFe)mineral has been analyzed using acombination of scanning electron microscopy and a combination of Raman and infrared spectroscopy. The origin of the mineral is Rapid Creek sedimentary phosphatic iron formation ,northern Yukon. The formula of the mineral was determined as K2:06Na2Ca0:89Na3:23ðFe7:82Mg4:40Mn0:78ÞR13:00Al1:44ðPO4Þ10:85ðPO3OH0:23ÞðOHÞ2. The complexity of the mineral formula is reflectedin the spectroscopy. Raman bands at 975, 991 and 1005 cm _1 with shoulder bands at 951 and 1024 cm _1 are assigned to the PO 3_ 4 m1 symmetric stretching modes. The Raman bands at 1024, 1066, 1092, 1123, 1148 and 1187 cm _1 are assigned to the PO 3_ 4 m3 antisymmetric stretching modes. Aseries of Raman bands observed at 540, 548, 557, 583, 604, 615 and 638 cm _1 are attributed to the m4 out of plane bending modes of the PO 4 and H2PO4 units. The m2 PO4 and H2PO4 ben ding modes are observed at 403, 424, 449, 463, 479 and 513 cm _1. Hydroxyl and water stretching bands are readily observed. Vibrational spectroscopy enables new information about the com- plex phos phate mineral arrojadite-(KFe)to be obtained.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença  3487300506636.-
Palavras-chave: dc.subjectArrojadite-
Palavras-chave: dc.subjectPhosphate-
Palavras-chave: dc.subjectRaman spectroscopy-
Palavras-chave: dc.subjectInfrared spectroscopy-
Título: dc.titleThe phosphate mineral arrojadite-(KFe) and its spectroscopic characterization.-
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