X-ray imaging of uranium in individual fluid inclusions

Philippot, P.; Ménez, Bénédicte; Simionovici, Alexandre; Chabiron, Aliouka; Cuney, Michel; Snigirev, A.; Snigireva, I.

doi:10.1046/j.1365-3121.2000.00275.x

Cited by 7 publications

(10 citation statements)

References 15 publications

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“…Synchrotron-based and PIXE techniques allow high-resolution and nondestructive chemical imaging of micron scale objects embedded in complex geological matrices (Philippot et al, 2000(Philippot et al, , 2001Ménez et al, 2002;Foriel et al, 2003). Accordingly, we addressed two major issues in this work: 1) whether these techniques could be successfully applied to element mapping at individual filamentous bacteria and microfossil scale, and 2) whether mapping of particular elements or element oxidation states could constitute a bio-marker in geological material.…”

Section: Resultsmentioning

confidence: 99%

High-resolution imaging of sulfur oxidation states, trace elements, and organic molecules distribution in individual microfossils and contempo rary microbial filaments 1 1Associate editor: N. E. Ostrom

Foriel

Philippot

Susini

et al. 2004

Geochimica et Cosmochimica Acta

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Section: Resultsmentioning

confidence: 99%

High-resolution imaging of sulfur oxidation states, trace elements, and organic molecules distribution in individual microfossils and contempo rary microbial filaments 1 1Associate editor: N. E. Ostrom

Foriel

Philippot

Susini

et al. 2004

Geochimica et Cosmochimica Acta

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“…, 1998). Finally, in the largest uranium volcanic‐hosted deposit, Streltsovka caldera, fluid inclusion studies indicate temperatures close to 250 °C (Philippot et al. , 2000).…”

Section: Discussionmentioning

confidence: 99%

Alteration geochemistry of the Nopal I uranium deposit (Sierra Peña Blanca, Mexico), a natural analogue for a radioactive waste repository in volcanic tuffs

Calas¹,

Agrinier²,

Allard³

et al. 2008

Terra Nova

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Natural analogues provide an approach to characterize and test the long‐term modelling of a repository performance. This article presents geochemical information about the alteration conditions of the Nopal I uranium deposit, Mexico, an analogue for the proposed Yucca Mountain radioactive waste repository. Mineralization and hydrothermal alteration of volcanic tuffs are contemporaneous, according to petrographic observations. Trace element geochemistry (U, Th, REE) provides evidence for local mobilization of uranium under oxidizing conditions and further precipitation under reducing conditions. O‐ and H‐isotope geochemistry of kaolinite, smectite, opal and calcite suggests that argillic alteration proceeded at shallow depth with meteoric water at 25–75 °C, a low‐temperature context, unusual for volcanic‐hosted uranium deposits. This temperature range is compatible with some post‐closure evolution models of the proposed Yucca Mountain repository.

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“…Even, 2D microbeam scanning of SR‐μ‐XRF is possible for elemental distribution mapping in fluid inclusion, soil, sediments, tuff, HCP and so on. Philippot et al demonstrated that a high concentration of uranium was present in the Streltsov fluid inclusion and displayed a relatively homogeneous distribution throughout the inclusion through SR‐μ‐XRF. Richard et al also studied fluid inclusions from two quartz samples of uranium deposits by SR‐μ‐XRF and found considerable amounts of U and other elements (mainly transition metals and rare earth elements) in the fluid inclusions, which all distributed homogeneously among the samples.…”

Section: Synchrotron Radiation X‐ray Fluorescence (Sr‐xrf) For Elemenmentioning

confidence: 99%

Exploring Actinide Materials Through Synchrotron Radiation Techniques

et al. 2014

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Synchrotron radiation (SR) based techniques have been utilized with increasing frequency in the past decade to explore the brilliant and challenging sciences of actinide‐based materials. This trend is partially driven by the basic needs for multi‐scale actinide speciation and bonding information and also the realistic needs for nuclear energy research. In this review, recent research progresses on actinide related materials by means of various SR techniques were selectively highlighted and summarized, with the emphasis on X‐ray absorption spectroscopy, X‐ray diffraction and scattering spectroscopy, which are powerful tools to characterize actinide materials. In addition, advanced SR techniques for exploring future advanced nuclear fuel cycles dealing with actinides are illustrated as well.

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X-ray imaging of uranium in individual fluid inclusions

Cited by 7 publications

References 15 publications

High-resolution imaging of sulfur oxidation states, trace elements, and organic molecules distribution in individual microfossils and contempo rary microbial filaments 1 1Associate editor: N. E. Ostrom

High-resolution imaging of sulfur oxidation states, trace elements, and organic molecules distribution in individual microfossils and contempo rary microbial filaments 1 1Associate editor: N. E. Ostrom

Alteration geochemistry of the Nopal I uranium deposit (Sierra Peña Blanca, Mexico), a natural analogue for a radioactive waste repository in volcanic tuffs

Exploring Actinide Materials Through Synchrotron Radiation Techniques

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