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dc.contributor.authorNogueira, Victor Mota e-
dc.contributor.authorBarbosa, Paola Ferreira-
dc.contributor.authorMayanna, Sathish-
dc.contributor.authorSilva, Adalene Moreira-
dc.contributor.authorToledo, Catarina Labouré Bemfica-
dc.contributor.authorLagoeiro, Leonardo Evangelista-
dc.contributor.authorAssis, Luciano Mozer de-
dc.date.accessioned2023-09-22T20:06:06Z-
dc.date.available2023-09-22T20:06:06Z-
dc.date.issued2022-03-05-
dc.identifier.citationNOGUEIRA, Victor Mota e et. al. Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization. Minerals, [S. l.], v. 12, n. 326, 2022. DOI: https://doi.org/10.3390/min12030326. Disponível em: https://www.mdpi.com/2075-163X/12/3/326. Acesso em: 21 set. 2023.pt_BR
dc.identifier.urihttp://repositorio2.unb.br/jspui/handle/10482/46535-
dc.language.isoengpt_BR
dc.publisherMDPIpt_BR
dc.rightsAcesso Abertopt_BR
dc.titleCharacterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitizationpt_BR
dc.typeArtigopt_BR
dc.subject.keywordFormação ferríferapt_BR
dc.subject.keywordCristalografiapt_BR
dc.subject.keywordProvíncia Mineral de Carajáspt_BR
dc.rights.license(CC-BY) Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).pt_BR
dc.identifier.doihttps://doi.org/10.3390/min12030326pt_BR
dc.description.abstract1The most frequent crystallographic preferred orientations developed during the progressive phase transformation of magnetite-hematite-goethite are described and analyzed in two natural samples of banded iron formations from Carajás Mineral Province. Microtextures of martitized grains containing the three phases and the microplaty matrix were analyzed in a scanning electron microscope equipped with a detector for electron backscatter diffraction. For identifying the correlation between magnetite, hematite and goethite lattice and topotaxity during transformation, multiple orientation relationships between the three phases were tested and verified using three-dimensional misorientation analysis. The results show that basal planes of goethite coincide with basal planes of hematite, which coincide with octahedral planes of magnetite. This indicates that transformation between the three minerals happens topotactically, and the oxygen lattice framework is preserved in all members of the reaction as a form of crystallographic memory. As a result of progressive and cyclical changes in oxidation/reduction conditions, an assemblage of high-order orientation relationships is observed and assigned to a complex process of transformation twinning in-between phase transformation of magnetite, hematite and goethite. In the N4WS iron ore deposit, iron oxides/hydroxides from martitized grains work as susceptible markers of environmental changes still in solid state during the diagenetic process.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2123-3693pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7661-455Xpt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Geosciencept_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Geosciencept_BR
dc.contributor.affiliationGerman Research Center for Geosciencespt_BR
dc.contributor.affiliationCarl Zeiss Microscopypt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Geosciencept_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Geosciencept_BR
dc.contributor.affiliationFederal University of Paraná, Department of Geologypt_BR
dc.contributor.affiliationValept_BR
dc.description.unidadeInstituto de Geociências (IG)pt_BR
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