Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UnB |
Texto Completo: | http://repositorio2.unb.br/jspui/handle/10482/46535 https://doi.org/10.3390/min12030326 https://orcid.org/0000-0002-2123-3693 https://orcid.org/0000-0001-7661-455X |
Resumo: | The 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. |
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Nogueira, Victor Mota eBarbosa, Paola FerreiraMayanna, SathishSilva, Adalene MoreiraToledo, Catarina Labouré BemficaLagoeiro, Leonardo EvangelistaAssis, Luciano Mozer deUniversity of Brasilia, Institute of GeoscienceUniversity of Brasilia, Institute of GeoscienceGerman Research Center for GeosciencesCarl Zeiss MicroscopyUniversity of Brasilia, Institute of GeoscienceUniversity of Brasilia, Institute of GeoscienceFederal University of Paraná, Department of GeologyVale2023-09-22T20:06:06Z2023-09-22T20:06:06Z2022-03-05NOGUEIRA, 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.http://repositorio2.unb.br/jspui/handle/10482/46535https://doi.org/10.3390/min12030326https://orcid.org/0000-0002-2123-3693https://orcid.org/0000-0001-7661-455XengMDPI(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/).info:eu-repo/semantics/openAccessCharacterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitizationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFormação ferríferaCristalografiaProvíncia Mineral de CarajásThe 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.Instituto de Geociências (IG)reponame:Repositório Institucional da UnBinstname:Universidade de Brasília (UnB)instacron:UNBORIGINALARTIGO_CharacterizationCrystallographicPreferred.pdfARTIGO_CharacterizationCrystallographicPreferred.pdfapplication/pdf24672635http://repositorio2.unb.br/jspui/bitstream/10482/46535/1/ARTIGO_CharacterizationCrystallographicPreferred.pdff619fe5e4881e6e9a76fd55294ad933bMD51open accessLICENSElicense.txtlicense.txttext/plain102http://repositorio2.unb.br/jspui/bitstream/10482/46535/2/license.txtaed4704d04bb260d4decd80db311aaa5MD52open access10482/465352023-09-25 15:23:11.223open accessoai:repositorio2.unb.br:10482/46535U3VibWlzc8OjbyBlZmV0aXZhZGEgZGUgYWNvcmRvIGNvbSBsaWNlbsOnYSBjb25jZWRpZGEgcGVsbyBhdXRvciBlL291IGRldGVudG9yIGRvcyBkaXJlaXRvcyBhdXRvcmFpcy4KBiblioteca Digital de Teses e DissertaçõesPUBhttps://repositorio.unb.br/oai/requestopendoar:2023-09-25T18:23:11Repositório Institucional da UnB - Universidade de Brasília (UnB)false |
dc.title.pt_BR.fl_str_mv |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
title |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
spellingShingle |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization Nogueira, Victor Mota e Formação ferrífera Cristalografia Província Mineral de Carajás |
title_short |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
title_full |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
title_fullStr |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
title_full_unstemmed |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
title_sort |
Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization |
author |
Nogueira, Victor Mota e |
author_facet |
Nogueira, Victor Mota e Barbosa, Paola Ferreira Mayanna, Sathish Silva, Adalene Moreira Toledo, Catarina Labouré Bemfica Lagoeiro, Leonardo Evangelista Assis, Luciano Mozer de |
author_role |
author |
author2 |
Barbosa, Paola Ferreira Mayanna, Sathish Silva, Adalene Moreira Toledo, Catarina Labouré Bemfica Lagoeiro, Leonardo Evangelista Assis, Luciano Mozer de |
author2_role |
author author author author author author |
dc.contributor.affiliation.pt_BR.fl_str_mv |
University of Brasilia, Institute of Geoscience University of Brasilia, Institute of Geoscience German Research Center for Geosciences Carl Zeiss Microscopy University of Brasilia, Institute of Geoscience University of Brasilia, Institute of Geoscience Federal University of Paraná, Department of Geology Vale |
dc.contributor.author.fl_str_mv |
Nogueira, Victor Mota e Barbosa, Paola Ferreira Mayanna, Sathish Silva, Adalene Moreira Toledo, Catarina Labouré Bemfica Lagoeiro, Leonardo Evangelista Assis, Luciano Mozer de |
dc.subject.keyword.pt_BR.fl_str_mv |
Formação ferrífera Cristalografia Província Mineral de Carajás |
topic |
Formação ferrífera Cristalografia Província Mineral de Carajás |
description |
The 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. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022-03-05 |
dc.date.accessioned.fl_str_mv |
2023-09-22T20:06:06Z |
dc.date.available.fl_str_mv |
2023-09-22T20:06:06Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
NOGUEIRA, 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. |
dc.identifier.uri.fl_str_mv |
http://repositorio2.unb.br/jspui/handle/10482/46535 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.3390/min12030326 |
dc.identifier.orcid.pt_BR.fl_str_mv |
https://orcid.org/0000-0002-2123-3693 https://orcid.org/0000-0001-7661-455X |
identifier_str_mv |
NOGUEIRA, 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. |
url |
http://repositorio2.unb.br/jspui/handle/10482/46535 https://doi.org/10.3390/min12030326 https://orcid.org/0000-0002-2123-3693 https://orcid.org/0000-0001-7661-455X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/openAccess |
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