The Itataia phosphate-uranium deposit (Ceará, Brazil) new petrographic, geochemistry and isotope studies

Veríssimo, César Ulisses Vieira; Santos, Roberto Ventura; Parente, Clóvis Vaz; Oliveira, Claudinei Gouveia de; Cavalcanti, José Adilson Dias; Neto, José de Araújo Nogueira

doi:10.1016/j.jsames.2016.05.002

Cited by 20 publications

(24 citation statements)

References 76 publications

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“…In drill core, it was observed later crystallization of calcite megacrystals in cavities involving collophanites, veins filling with collophanites and calcite, and breccias suggesting karstification. The hypogenic alteration profile reaches a depth of 425 m, which coincides with the boundary of the main ore body (Veríssimo et al 2016). …”

Section: Karstic Featuresmentioning

confidence: 80%

“…Then the collophanite precipitated as a product of karstic hydrothermal processes, of low temperature (50ºC to 140ºC), and is associated with fractures and normal fault systems related to major crustal fractures. Veríssimo et al (2016) described brecciated zones containing prismatic fluorapatite next to colloform apatite, as well phosphate engulfed by carbonates, indicate the existence of cyclical dissolution and precipitation, which is a typical karstic phenomenon. The youngest karstic episode also occurred when fragments of collophanites mixed with clay filling karstic features (conduits and open fractures) in Itataia U-P Deposit.…”

Section: Hydrothermal Karstic Deposition Of Collophanitesmentioning

confidence: 95%

“…Mineral chemistry analyses were performed by Veríssimo et al (2016) in two distinct generations of apatite from mineralized marbles and calc-silicate rock: clear prismatic apatite and cryptocrystalline apatite. The mineral chemistry shows that the collophanite is essentially composed of cryptocrystalline fluorapatite with some important variations in terms of elements.…”

Section: Ore Typesmentioning

confidence: 99%

“…In Taperuaba, albitite fragments occur in the surface, which has been described by Haddad (1981) as associated with anorogenic granite (470 Ma, Castro et al 2012). According to Veríssimo et al (2016), the first phase of mineralization at Itataia is characterized by Na-metasomatism-related episyenitization, hematitization and chloritization, at the end, or immediately after the deformation and metamorphism that marked the final stages of the Brasiliano-Pan African orogenesis. Here we consider this as the second phase of protomineralization, with the formation of the albitites and episyenites bodies.…”

Section: Metasomatismmentioning

confidence: 99%

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A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

Cavalcanti¹,

Bessa²,

Santos³

et al. 2018

JGSB

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The Itataia U-P deposit holds the second largest uranium reserve in Brazil. All of the uranium is contained within the microcrystalline structure of fluorapatite, which is the ore mineral of the collophanite bodies. The main lithology that hosts the mineralization is marble, and the collophanite occurs as massive bodies, stockwork vein, breccia, filling vugs in episyenites, and disseminated in host rocks. This review shows that five important episodes in the Northern Borborema Province, leading to the consolidation of the Itataia U-P deposit: i) deposition of a phosphate-rich Neoproterozoic supracrustal quartz-pelite--carbonate sequence, represented by the Itataia Group; ii) building of the Neoproterozoic Tamboril-Santa Quitéria continental magmatic arc, responsible for the partial melting of the phosphate-rich supracrustal sequence; iii) Na-metasomatism related to Neoproterozoic/Cambrian-Ordovician post-collisional to anorogenic granitoids, which generated uranium-rich albitite, as well as barren episyenite bodies; iv) Cretaceous hydrothermal karstic event related to the generalized fracturing of the continental crust caused by the Pangea break-up and making possible the deposition of collophanites in the karstic features and vugs in episyenites; v) reworking of the collophanites with the deposition of breccia in paleokarstic features in the marble.

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Section: Karstic Featuresmentioning

confidence: 80%

Section: Hydrothermal Karstic Deposition Of Collophanitesmentioning

confidence: 95%

Section: Ore Typesmentioning

confidence: 99%

Section: Metasomatismmentioning

confidence: 99%

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A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

Cavalcanti¹,

Bessa²,

Santos³

et al. 2018

JGSB

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“…The CCD also hosts various economic deposits such as iron, manganese, copper, gold, and uranium (e.g. Parente et al 2015, Veríssimo et al 2016). …”

Section: Geological Settingmentioning

confidence: 99%

Conservation of geosites as a tool to protect geoheritage: the inventory of Ceará Central Domain, Borborema Province - NE/Brazil

Moura

Garcia

Brilha

et al. 2017

An. Acad. Bras. Ciênc.

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The Ceará Central Domain, in the northern Borborema Province/NE Brazil, encompasses important geological records (geosites) which allow understanding a relevant period of the Earth's evolution, mainly associated to Neoproterozoic Brazilian/Pan-African Cycle and West Gondwana amalgamation, besides Neoarchean to Ordovician records. The presented geoheritage inventory aims to characterise the geosites with scientific relevance of Ceará Central Domain. By applying a method for large areas, the final selection resulted in eight geological frameworks represented by 52 geosites documented in a single database. This is the first step for a geoconservation strategy based on systematic inventories, statutory protection, geoethical behaviour and awareness about scientific, educational and/or cultural relevance of geosites.

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Uranium mineralization associated with late magmatic ductile to brittle deformation and Na–Ca metasomatism of the Pan-African A-type Zabili syntectonic pluton (Mayo-Kebbi massif, SW Chad)

et al. 2020

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The Itataia phosphate-uranium deposit (Ceará, Brazil) new petrographic, geochemistry and isotope studies

Cited by 20 publications

References 76 publications

A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

Conservation of geosites as a tool to protect geoheritage: the inventory of Ceará Central Domain, Borborema Province - NE/Brazil

Uranium mineralization associated with late magmatic ductile to brittle deformation and Na–Ca metasomatism of the Pan-African A-type Zabili syntectonic pluton (Mayo-Kebbi massif, SW Chad)

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