Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada
International audience Concentrations of 7% U and 1% Cu were identified in massive, brecciated, and amorphous carbonaceous materials (CM) characterized by strongly negative values of carbon stable isotopes (δ13C = − 39.1‰ relative to PDB). The anomalies are restricted to clay alteration halos develo...
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ftccsdartic:oai:HAL:insu-01312853v1 2023-05-15T17:48:04+02:00 Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada Riegler, Thomas Beaufort, Marie-France Allard, Thierry Pierson-Wickmann, Anne-Catherine Beaufort, Daniel Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut de Chimie du CNRS (INC) Institut Pprime (PPRIME) ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers Institut de minéralogie et de physique des milieux condensés (IMPMC) Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Géosciences Rennes (GR) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) 2016 https://hal-insu.archives-ouvertes.fr/insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853/document https://hal-insu.archives-ouvertes.fr/insu-01312853/file/Riegler-2016.pdf https://doi.org/10.1016/j.oregeorev.2016.04.018 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oregeorev.2016.04.018 insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853/document https://hal-insu.archives-ouvertes.fr/insu-01312853/file/Riegler-2016.pdf doi:10.1016/j.oregeorev.2016.04.018 info:eu-repo/semantics/OpenAccess ISSN: 0169-1368 Ore Geology Reviews https://hal-insu.archives-ouvertes.fr/insu-01312853 Ore Geology Reviews, Elsevier, 2016, 79, pp.382-391. ⟨10.1016/j.oregeorev.2016.04.018⟩ Hydrothermal Proterozoic Carbonaceous material (CM) Unconformity uranium (U) deposits [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.1016/j.oregeorev.2016.04.018 2021-12-19T02:46:18Z International audience Concentrations of 7% U and 1% Cu were identified in massive, brecciated, and amorphous carbonaceous materials (CM) characterized by strongly negative values of carbon stable isotopes (δ13C = − 39.1‰ relative to PDB). The anomalies are restricted to clay alteration halos developed in Neoarchean Woodburn Lake group metagreywacke that is the predominant host of unconformity-related uranium (U) deposits in the Kiggavik exploration camp. Petrographic and microstructural analyses by SEM, X-Ray Diffraction, HR-TEM and RAMAN spectroscopy identified carbon veils, best described as graphene-like carbon, upon which nano-scale uraninite crystals are distributed. CM are common in U systems such as the classic Cretaceous roll-front deposits and the world-class Paleoproterozoic unconformity-related deposits. However, the unusual spatial and textural association of U minerals and CM described herein raises questions on mechanisms that may have been responsible for the precipitation of the CM followed by crystallization of U oxides on its surfaces. Based on the characteristics presented herein, the CMs at Kiggavik are interpreted as hydrothermal in origin. Furthermore, the nanoscale organization and properties of these graphene-like layers that host U oxide crystallites clearly localized U oxide nucleation and growth. Article in Journal/Newspaper Nunavut Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Canada Nunavut Ore Geology Reviews 79 382 391 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
Hydrothermal Proterozoic Carbonaceous material (CM) Unconformity uranium (U) deposits [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
Hydrothermal Proterozoic Carbonaceous material (CM) Unconformity uranium (U) deposits [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Riegler, Thomas Beaufort, Marie-France Allard, Thierry Pierson-Wickmann, Anne-Catherine Beaufort, Daniel Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
topic_facet |
Hydrothermal Proterozoic Carbonaceous material (CM) Unconformity uranium (U) deposits [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience Concentrations of 7% U and 1% Cu were identified in massive, brecciated, and amorphous carbonaceous materials (CM) characterized by strongly negative values of carbon stable isotopes (δ13C = − 39.1‰ relative to PDB). The anomalies are restricted to clay alteration halos developed in Neoarchean Woodburn Lake group metagreywacke that is the predominant host of unconformity-related uranium (U) deposits in the Kiggavik exploration camp. Petrographic and microstructural analyses by SEM, X-Ray Diffraction, HR-TEM and RAMAN spectroscopy identified carbon veils, best described as graphene-like carbon, upon which nano-scale uraninite crystals are distributed. CM are common in U systems such as the classic Cretaceous roll-front deposits and the world-class Paleoproterozoic unconformity-related deposits. However, the unusual spatial and textural association of U minerals and CM described herein raises questions on mechanisms that may have been responsible for the precipitation of the CM followed by crystallization of U oxides on its surfaces. Based on the characteristics presented herein, the CMs at Kiggavik are interpreted as hydrothermal in origin. Furthermore, the nanoscale organization and properties of these graphene-like layers that host U oxide crystallites clearly localized U oxide nucleation and growth. |
author2 |
Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut de Chimie du CNRS (INC) Institut Pprime (PPRIME) ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers Institut de minéralogie et de physique des milieux condensés (IMPMC) Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Géosciences Rennes (GR) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) |
format |
Article in Journal/Newspaper |
author |
Riegler, Thomas Beaufort, Marie-France Allard, Thierry Pierson-Wickmann, Anne-Catherine Beaufort, Daniel |
author_facet |
Riegler, Thomas Beaufort, Marie-France Allard, Thierry Pierson-Wickmann, Anne-Catherine Beaufort, Daniel |
author_sort |
Riegler, Thomas |
title |
Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
title_short |
Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
title_full |
Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
title_fullStr |
Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
title_full_unstemmed |
Nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the Kiggavik camp, Paleoproterozoic Thelon Basin, Nunavut, Canada |
title_sort |
nanoscale relationships between uranium and carbonaceous material in alteration halos around unconformity-related uranium deposits of the kiggavik camp, paleoproterozoic thelon basin, nunavut, canada |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal-insu.archives-ouvertes.fr/insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853/document https://hal-insu.archives-ouvertes.fr/insu-01312853/file/Riegler-2016.pdf https://doi.org/10.1016/j.oregeorev.2016.04.018 |
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Canada Nunavut |
geographic_facet |
Canada Nunavut |
genre |
Nunavut |
genre_facet |
Nunavut |
op_source |
ISSN: 0169-1368 Ore Geology Reviews https://hal-insu.archives-ouvertes.fr/insu-01312853 Ore Geology Reviews, Elsevier, 2016, 79, pp.382-391. ⟨10.1016/j.oregeorev.2016.04.018⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oregeorev.2016.04.018 insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853 https://hal-insu.archives-ouvertes.fr/insu-01312853/document https://hal-insu.archives-ouvertes.fr/insu-01312853/file/Riegler-2016.pdf doi:10.1016/j.oregeorev.2016.04.018 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.oregeorev.2016.04.018 |
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Ore Geology Reviews |
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79 |
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382 |
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