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Rare Earth Elements: A Tool for Understanding the Behaviour of Trivalent Actinides in the Geosphere

Published online by Cambridge University Press:  19 October 2011

Belen Buil ,
Paloma Gómez ,
Antonio Garralón  and
M. Jesús Turrero
Belen Buil
Affiliation:
[email protected], ciemat, Medioambiente, Avda. Complutense 22, Madrid, 28040, Spain, +34913466183
Paloma Gómez
Affiliation:
[email protected], CIEMAT, Medioambiente, Avda. Complutense 22, Madrid, 28040, Spain
Antonio Garralón
Affiliation:
[email protected], CIEMAT, Medioambiente, Avda. Complutense 22, Madrid, 28040, Spain
M. Jesús Turrero
Affiliation:
[email protected], CIEMAT, Medioambiente, Avda. Complutense 22, Madrid, 28040, Spain
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Abstract

REE concentrations have been determined in groundwaters, granite and fracture fillings in a restored uranium mine.

The granitoids normalized REE patterns of groundwaters show HREE-enrichment and positive Eu anomalies. This suggests that the REE are fractionated during leaching from the source rocks by groundwaters. Preferential leaching of HREE would be consistent with the greater stability of their aqueous complexes compared to those of the LREE, together with the dissolution of certain fracture filling minerals, dissolution/alteration of phyllosilicates and colloidal transport.

Keywords

lanthanidewaste managementgeologic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 985: Symposium NN – Scientific Basis for Nuclear Waste Management XXX , 2006 , 0985-NN11-06
Copyright
Copyright © Materials Research Society 2007

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References

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