| Campo DC | Valor | Idioma |
|---|
| dc.contributor.author | Nogueira, Victor Mota e | - |
| dc.contributor.author | Barbosa, Paola Ferreira | - |
| dc.contributor.author | Mayanna, Sathish | - |
| dc.contributor.author | Silva, Adalene Moreira | - |
| dc.contributor.author | Toledo, Catarina Labouré Bemfica | - |
| dc.contributor.author | Lagoeiro, Leonardo Evangelista | - |
| dc.contributor.author | Assis, Luciano Mozer de | - |
| dc.date.accessioned | 2023-09-22T20:06:06Z | - |
| dc.date.available | 2023-09-22T20:06:06Z | - |
| dc.date.issued | 2022-03-05 | - |
| dc.identifier.citation | 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. | pt_BR |
| dc.identifier.uri | http://repositorio2.unb.br/jspui/handle/10482/46535 | - |
| dc.language.iso | eng | pt_BR |
| dc.publisher | MDPI | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.title | Characterization of the crystallographic preferred orientation relationships of the magnetite-hematite-goethite phase transformation during martitization | pt_BR |
| dc.type | Artigo | pt_BR |
| dc.subject.keyword | Formação ferrífera | pt_BR |
| dc.subject.keyword | Cristalografia | pt_BR |
| dc.subject.keyword | Província Mineral de Carajás | pt_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.doi | https://doi.org/10.3390/min12030326 | pt_BR |
| dc.description.abstract1 | 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. | pt_BR |
| dc.identifier.orcid | https://orcid.org/0000-0002-2123-3693 | pt_BR |
| dc.identifier.orcid | https://orcid.org/0000-0001-7661-455X | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Institute of Geoscience | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Institute of Geoscience | pt_BR |
| dc.contributor.affiliation | German Research Center for Geosciences | pt_BR |
| dc.contributor.affiliation | Carl Zeiss Microscopy | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Institute of Geoscience | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Institute of Geoscience | pt_BR |
| dc.contributor.affiliation | Federal University of Paraná, Department of Geology | pt_BR |
| dc.contributor.affiliation | Vale | pt_BR |
| dc.description.unidade | Instituto de Geociências (IG) | pt_BR |
| Aparece nas coleções: | Artigos publicados em periódicos e afins
|
