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dc.contributor.author
Rainoldi, Ana Laura
dc.contributor.author
Beaufort, Daniel
dc.contributor.author
Franchini, Marta Beatriz
dc.contributor.author
Giusiano, Adolfo Eugenio
dc.contributor.author
Petit, Sabine
dc.contributor.author
Patrier, Patricia
dc.contributor.author
Pons, María Josefina
dc.date.available
2024-01-23T13:28:53Z
dc.date.issued
2023-11
dc.identifier.citation
Rainoldi, Ana Laura; Beaufort, Daniel; Franchini, Marta Beatriz; Giusiano, Adolfo Eugenio; Petit, Sabine; et al.; Vanadium mineralization at Los Chihuidos sediment-hosted Cu–V deposit, Neuquén Basin, Argentina: An approach to vanadium ore forming processes; Elsevier; Geoscience Frontiers; 15; 1; 11-2023; 1-22
dc.identifier.issn
1674-9871
dc.identifier.uri
http://hdl.handle.net/11336/224580
dc.description.abstract
Vanadium mineralization at Los Chihuidos deposit of the Neuquén Basin is linked to the development of a redox front system related to the inflow of hydrocarbons into the red sandstone of the Huincul Formation. Interaction of hydrocarbons with oxidized red beds and connate water generated redox reactions where hematite was dissolved due to iron reduction resulting in the discoloration of the red strata. At the contact between oxidized red sandstone and reduced white sandstone, precipitation of specific mineral phases resulted in the V ore with minor amounts of Cu. With the implementation of the redox interface, abundant V-montmorillonite and V-hematite precipitated at the more oxidizing conditions and Cu-V-corrensite-type at the more reducing conditions of the redox front. As the redox front advanced with fluids constantly migrating into the reservoir, more reducing conditions were stablished, promoting chloritization and minor illitization with V-Cu incorporation and continuous upgrading of the ore. Main ore mineralogy consists of clay minerals including V-bearing montmorillonite, Cu-V-corrensite-type, V-di-trioctahedral chlorite and Cu-tri-trioctahedral chlorite with minor V-illite–smectite mixed-layer minerals and associated secondary V-hematite. Chloritization over illitization was favored due to high amounts of Fe and Mg in detrital clasts and in connate fluids and by low K availability related to low amounts of detrital K-feldspar. The spatial transition of V and /or Cu bearing clay minerals observed through the mineralized redox front at Los Chihuidos deposit (kaolinite → smectite → illite/smectite → corrensite-type → di- trioctahedral -chlorite → tri- trioctahedral -chlorite) and the related variation of V–Cu concentrations in bulk rock are indicative of increasing pH and decreasing Eh of resident solutions from red to white sandstones during the hypogene mineralization process. Late influx of Cu-rich oxidized basinal brines precipitated main copper ore with Cu-sulfides in the white sandstone up to the contact with the redox front in contact with hydrocarbons. During uplift and exhumation, percolation of meteoric water promoted remobilization of V and Cu and the precipitation of oxidized V–Cu ore.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
BLEACHING
dc.subject
CLAY MINERALS
dc.subject
HYDROCARBONS
dc.subject
REDOX FRONT
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V-CHLORITE
dc.subject.classification
Geología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Vanadium mineralization at Los Chihuidos sediment-hosted Cu–V deposit, Neuquén Basin, Argentina: An approach to vanadium ore forming processes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-01-22T12:40:56Z
dc.identifier.eissn
2588-9192
dc.journal.volume
15
dc.journal.number
1
dc.journal.pagination
1-22
dc.journal.pais
China
dc.journal.ciudad
Beijing
dc.description.fil
Fil: Rainoldi, Ana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Beaufort, Daniel. Université de Poitiers; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Franchini, Marta Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina
dc.description.fil
Fil: Giusiano, Adolfo Eugenio. No especifíca;
dc.description.fil
Fil: Petit, Sabine. Université de Poitiers; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Patrier, Patricia. Université de Poitiers; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Pons, María Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
dc.journal.title
Geoscience Frontiers
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.gsf.2023.101724
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