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Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

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Bhattacharyya, A, Campbell, KM, Kelly, SD, Roebbert, Y, Weyer, S, Bernier-Latmani, R, Borch, T, 2017, Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits. Nature Communications, 8, 15538, doi: 10.1038/ncomms15538.

Summary

Historically, it is believed that crystalline uraninite, produced via the abiotic reduction of hexavalent uranium (U(VI)) is the dominant reduced U species formed in low-temperature uranium roll-front ore deposits. Here we show that non-crystalline U(IV) generated through biologically mediated U(VI) reduction is the predominant U(IV) species in an undisturbed U roll-front ore deposit in Wyoming, USA. Characterization of U species revealed that the majority (∼58-89%) of U is bound as U(IV)to C-containing organic functional groups or inorganic carbonate, while uraninite and U(VI) represent only minor components. The uranium deposit exhibited mostly 238U-enriched isotope signatures, consistent with largely biotic reduction of U(VI) to [...]

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Type Scheme Key
local-index unknown 70190145
local-pk unknown 70190145
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1038/ncomms15538
series unknown Nature Communications

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journalNature Communications
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typevolume
value8
languageEnglish
citationTypeArticle

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