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URANYL ION [1 record]

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Record 1 2003-11-02

English

Subject field(s)
  • Geochemistry
  • Radioactive Ores (Mining)
CONT

The general genetic model hinges on the divalent nature of uranium - being strongly soluble in oxidizing conditions (uranic: U+6) and relatively insoluble in reducing conditions (uranous: U+4).

CONT

Semiarid conditions favour the development of more mature groundwaters (bicarbonate-rich) at shallow depths, which in turn favour complexing with uranyl ions in the upstream end of the aquifer.

Key term(s)
  • uranic ion

French

Domaine(s)
  • Géochimie
  • Minerais radioactifs (Mines métalliques)
CONT

Le modèle génétique général s'articule autour du caractère bivalent de l'uranium dans la nature - il est très soluble dans des conditions oxydantes (ion uranyl : U6+) et relativement insoluble dans des conditions réductrices (ion uraneux : U4+).

CONT

Des conditions semi-arides sont propices à la formation à faible profondeur d'eaux souterraines plus matures (riches en bicarbonates), ce qui favorise à son tour la complexion avec des ions uranyl à l'extrémité amont de l'aquifère.

Spanish

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