dc.identifier.uri |
http://dx.doi.org/10.15488/1696 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/1721 |
|
dc.contributor.author |
Bhattacharyya, Amrita
|
|
dc.contributor.author |
Campbell, Kate M.
|
|
dc.contributor.author |
Kelly, Shelley D.
|
|
dc.contributor.author |
Roebbert, Yvonne
|
|
dc.contributor.author |
Weyer, Stefan
|
|
dc.contributor.author |
Bernier-Latmani, Rizlan
|
|
dc.contributor.author |
Borch, Thomas
|
|
dc.date.accessioned |
2017-07-17T07:35:03Z |
|
dc.date.available |
2017-07-17T07:35:03Z |
|
dc.date.issued |
2017 |
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dc.identifier.citation |
Bhattacharyya, A.; Campbell, K.M.; Kelly, S.D.; Roebbert, Y.; Weyer, S. et al.: Biogenic non-crystalline U (IV) revealed as major component in uranium ore deposits. In: Nature Communications 8 (2017), 15538. DOI: https://doi.org/10.1038/ncomms15538 |
|
dc.description.abstract |
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 (-1/458-89%) 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 238 U-enriched isotope signatures, consistent with largely biotic reduction of U (VI) to U (IV). This finding implies that biogenic processes are more important to uranium ore genesis than previously understood. The predominance of a relatively labile form of U (IV) also provides an opportunity for a more economical and environmentally benign mining process, as well as the design of more effective post-mining restoration strategies and human health-risk assessment. |
eng |
dc.description.sponsorship |
University of Wyoming |
|
dc.language.iso |
eng |
|
dc.publisher |
London : Nature Publishing Group |
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dc.relation.ispartofseries |
Nature Communications 8 (2017) |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
crystalline uraninite |
eng |
dc.subject |
hexavalent uranium |
eng |
dc.subject.ddc |
500 | Naturwissenschaften
|
ger |
dc.title |
Biogenic non-crystalline U (IV) revealed as major component in uranium ore deposits |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2041-1723 |
|
dc.relation.doi |
https://doi.org/10.1038/ncomms15538 |
|
dc.bibliographicCitation.volume |
8 |
|
dc.bibliographicCitation.firstPage |
15538 |
|
dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|