Hostname: page-component-848d4c4894-8bljj Total loading time: 0 Render date: 2024-06-25T00:36:39.505Z Has data issue: false hasContentIssue false
  • English
  • Français

Uranium Fixation During Uranium Migration Under an Oxidizing Condition

Published online by Cambridge University Press:  15 February 2011

Takashi Murakami ,
Katsuyuki Tsuzuki ,
Tsutomu Sato ,
Hiroshi Isobe  and
Toshihiko Ohnuki
Takashi Murakami
Affiliation:
Ehime University, Matsuyama, Ehime 790, Japan,
Katsuyuki Tsuzuki
Affiliation:
Ehime University, Matsuyama, Ehime 790, Japan,
Tsutomu Sato
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, Japan
Hiroshi Isobe
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, Japan
Toshihiko Ohnuki
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, Japan
Get access

Abstract

A rock specimen, collected downstream of the Koongarra uranium ore deposit, Australia, was examined mainly by high resolution transmission electron microscopy in order to understand the uranium fixation mechanism. Uranium was found to exist as saleeite (Mg(UO2)2(PO4)2.10H2O) microcrystals of 1 – 20 nm scattered between iron minerals (mainly goethite and hematite) of 2 – 50 nm. The microtextural relationship between saléeite and the iron minerals revealed that the iron minerals function as catalyst for the formation of saléeite. The intermediate metamict microstructures of the saléeite microcrystals are consistent with the estimated formation age of saléeite, 1 to 3 × 106 years. Uranium has been, thus, fixed as saléeite downstream as well as in the secondary ore deposit. Saléeite in the secondary ore deposit showed completely periodic to fully metamict microstructures, suggesting that saléeite, a major uranium mineral in the secondary ore deposit, probably began to form a few million years ago and continued to form for the next million years.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 1219
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Snelling, A., in Uranium in the Pine Creek Geosyncline (IAEA, 1980), 487.Google Scholar
[2] Isobe, H., Murakami, T., and Ewing, R. C., J. Nucl. Mater. 190,174 (1992).Google Scholar
[3] Isobe, H., Ewing, R., and Murakami, T., in Scientific Basis for Nuclear Waste Management XVII (The Materials Research Society, 1994), pp. 653–660.Google Scholar
[4] Murakami, T., Isobe, H., and Edis, R., in Scientific Basis for Nuclear Waste Management XIV (The Materials Research Society, 1991), pp. 741–748.Google Scholar
[5] Airey, P. L., Roman, D., Golian, C., Short, S., Nightingale, T., Lowson, R. T., and Calf, G. E., in AAEC/C40 (Australian Nuclear Science and Technology Organisation, Sydney, 1984), pp. 21–26.Google Scholar
[6] Yanase, N., Nightingale, T., Payne, T., and Duerden, P., Radiochim. Acta 52/53, 387 (1991) .Google Scholar
[7] Murakami, T., Isobe, H., Nagano, T., and Nakashima, S., in Scientific Basis for Nuclear Waste Management XV (The Materials Research Society, 1992), pp. 473–480.Google Scholar
[8] Miller, S. A. and Taylor, J. C., Zeit. Krist. 177, 247 (1986).Google Scholar
[9] Murakami, T., Chakoumakos, B. C., Ewing, R. C., Lumpkin, G. R., and Weber, W. J., Am. Mineral., 76, 1510(1991).Google Scholar
[10] Edis, R., Cao, L., Cashion, J., Klessa, D., Koppi, A. J., Murakami, T., Nightingale, T., Payne, T., Snelling, A., and Yanase, N., Alligator Rivers Analogue Project Final Report Vol. 8, DOE/HMIP/PR/92/078 (in press).Google Scholar
[11] Holland, H. D. and Gottfried, D., Acta Cryst. 8, 291 (1955).Google Scholar
[12] Ewing, R. C., Chakoumakos, B. C., Lumpkin, G. R., and Murakami, T., MRS Bull. 12, 58 (1987).Google Scholar
[13] Lever, D. A., in AAEC/C55 (Australian Nuclear Science and Technology Organisation, Sydney, 1987), pp. 179–196.Google Scholar
[14] Golian, C., Lever, D. A., Baker, A. J., Bennett, D. G., Brandberg, F., Connell, L. D., Kimura, H., Lindgren, M., Murakami, T., Ohnuki, T., Pers, K., Read, D., Skagius, K., and Snelling, A., Alligator Rivers Analogue Project Final Report, Vol. 14, DOE/HMIP/PR/92/084, ANSTO (in press).Google Scholar
[15] Murakami, T., Ohnuki, T., and Sato, T., Abstract, Fall Meeting of Mineralogical Society of Japan, p.50, Sendai, Japan (1991).Google Scholar
[16] Sverjensky, D., Bennett, D., and Read, D., Alligator Rivers Analogue Project Final Report, Vol. 11, DOE/HMIP/PR/92/081, ANSTO (in press).Google Scholar
[17] Payne, T., Edis, R., Herczeg, A., Sekine, K., Seo, T., Waite, D., and Yanase, N., Alligator Rivers Analogue Project Final Report, Vol. 7, DOE/HMIP/PR/92/077, ANSTO 185 p.(1992) .Google Scholar