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Partitioning of Actinides, Rare Earth Elements, and Other Trace Elements In Titanium-Rich Veins From Adamello, Italy

Published online by Cambridge University Press:  21 March 2011

Gregory R. Lumpkin ,
Reto Gieré ,
T.E. Payne ,
P.J. McGlinn  and
K.P. Hart
Gregory R. Lumpkin
Affiliation:
Materials Division, ANSTO, Private Mail Bag 1, Menai, NSW 2234, Australia
Reto Gieré
Affiliation:
Materials Division, ANSTO, Private Mail Bag 1, Menai, NSW 2234, Australia
T.E. Payne
Affiliation:
Materials Division, ANSTO, Private Mail Bag 1, Menai, NSW 2234, Australia
P.J. McGlinn
Affiliation:
Materials Division, ANSTO, Private Mail Bag 1, Menai, NSW 2234, Australia
K.P. Hart
Affiliation:
Dept. of Earth and Atmospheric Sciences, Purdue Univ., West Lafayette, IN 47907-1397, USA
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Abstract

Extensive mineralogical and chemical studies have been carried out on the Ti-rich hydrothermal veins emplaced within the contact aureole of the Adamello batholith. In addition to other actinide and rare earth element host phases, the veins contain both zirconolite and betafite and provide information relevant to ceramic wasteforms designed for the disposal of actinide-rich nuclear wastes. In this paper, we describe the results of element partitioning studies based on dissolution experiments using 9M HCl. Generally, the acid-resistant minerals include allanite, baddeleyite, betafite, chalcopyrite, geikielite, titanite, spinel, and zirconolite. We also found that the major silicate minerals forsterite, phlogopite, and titanian clinohumite and the sulfide mineral pyrrhotite are partially dissolved by the acid treatment, whereas calcite and apatite are highly soluble (as expected). In particular, the distributions of Th and U between the acid-resistant and acid-soluble fractions indicate that they partition mainly between zirconolite, titanite, betafite, and apatite. However, there is a considerable increase in the amounts of Zr, Nb, Th, and U released in certain actinide-rich samples that may result from enhanced dissolution following radiation damage.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 989
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1. Vance, E.R., Mater. Res. Soc. Bull. 19, 28 (1994).Google Scholar
2. Vance, E.R., Begg, B.D., Day, R.A., and Ball, C.J., in Scientific Basis for Nuclear Waste Management XVIII, edited by Murakami, T. and Ewing, R.C. (Mater. Res. Soc. Proc. 353, Pittsburgh, PA, 1995) pp. 767–774.Google Scholar
3. Begg, B.D., Vance, E.R., Day, R.A., Hambley, M., and Conradson, S.D., in Scientific Basis for Nuclear Waste Management XIX, edited by Gray, W.J. and Triay, I.R., (Mater. Res. Soc. Proc. 465, Pittsburgh, PA, 1997) pp. 325–332.Google Scholar
4. Begg, B.D. and Vance, E.R., in Scientific Basis for Nuclear Waste Management XIX, edited by Gray, W.J. and Triay, I.R., (Mater. Res. Soc. Proc. 465, Pittsburgh, PA, 1997) pp. 333–340.Google Scholar
5. Myers, B.R., Armantrout, G.A., Jantzen, C.M., Jostsons, A., McKibben, J.M., Shaw, H.F., Strachan, D.M., Vienna, J.D., Technical Evaluation Panel Summary Report, Plutonium Immobilization Project, Report No. UCRL-ID-129315, 1998.Google Scholar
6. Lumpkin, G.R., Smith, K.L., Blackford, M.G., Gieré, R., and Williams, C.T., Micron 25, 581 (1994).Google Scholar
7. Lumpkin, G.R., Smith, K.L., and Gieré, R., Micron 28, 57 (1997).Google Scholar
8. Lumpkin, G.R., Smith, K.L., Blackford, M.G., Gieré, R., and Williams, C.T., in Scientific Basis for Nuclear Waste Management XXI, edited by McKinley, I.G. and McCombie, C. (Mater. Res. Soc. Proc. 506, Pittsburgh, PA, 1998) pp. 215–222.Google Scholar
9. Lumpkin, G.R., Day, R.A., McGlinn, P.J., Payne, T.E., Gieré, R., and Williams, C.T., in Scientific Basis for Nuclear Waste Management XXII, edited by Wronkiewicz, D.J. and Lee, J.H. (Mater. Res. Soc. Proc. 556, Pittsburgh, PA, 1999) pp.793–800.Google Scholar
10. Gieré, R., Ph.D. Thesis, No. 9141, ETH Zürich, Switzerland, 1990.Google Scholar
11. Gieré, R. and Williams, C.T., Contrib. Mineral. Petrol. 112, 83 (1992).Google Scholar
12. Gieré, R., Chem. Geol. 110, 251 (1993).Google Scholar
13. Gieré, R., in: Rare Earth Minerals, edited by Jones, A.P., Wall, F., and Williams, C.T. (Chapman and Hall, London, 1996) pp. 105–150.Google Scholar
14. Payne, T.E., Lumpkin, G.R., McGlinn, P.J., and Hart, K.P., in Scientific Basis for Nuclear Waste Management XVIII, edited by Murakami, T. and Ewing, R.C. (Mater. Res. Soc. Proc. 353, Pittsburgh, PA, 1995) pp.1259–1266.Google Scholar
15. Gieré, R., Lumpkin, G.R., Williams, C.T., Smith, K.L., Payne, T.E., McGlinn, P.J., Hart, K.P., and Oberli, F., this volume.Google Scholar
16. Reid, M.J., Gancarz, A.J., and Albee, A.L., Earth Planet. Sci. Lett. 17, 433 (1973).Google Scholar
17. Lumpkin, G.R., J. Nucl. Mater., in press.Google Scholar
18. Weber, W.J., Wald, J.W., and Matzke, Hj., J. Nucl. Mater. 138, 196 (1986).Google Scholar
19. Begg, B.D., Hess, N.J., Weber, W.J., Devanathan, R., Icenhower, J.P., Thevuthasan, S., and McGrail, B.P., J. Nucl. Mater., in press.Google Scholar