Structural characterization of natural UO2 at pressures up to 82 GPa and temperatures up to 2200 K

American Mineralogist

Volumn 93, Issue 7, 2008, Pages 1090-1098

  Gréaux, Steeve ^a,f   Gautron, Laurent ^a   Andrault, Denis ^b,c   Bolfan Casanova, Nathalie ^c   Guignot, Nicolas ^d,g   Haines, Julien ^e  

^a UNIVERSITÉ GUSTAVE EIFFEL   (France)

^b Institut de Minéralogie et de Physique des Milieux Condensés   (France)

^c UNIVERSITÉ BLAISE PASCAL   (France)

^d EUROPEAN SYNCHROTRON RADIATION FACILITY   (France)

^e UNIV MONTPELLIER   (France)

^f EHIME UNIVERSITY   (Japan)

^g SYNCHROTRON SOLEIL   (France)

Author keywords

Crystal structure; Deep mantle; Heat sources; Uranium oxide; X ray diffraction

Indexed keywords

EQUATIONS OF STATE OF SOLIDS; EXPERIMENTAL MINERALOGY; FLUORSPAR; OXIDE MINERALS; SYNCHROTRON RADIATION; URANIUM DIOXIDE; URANIUM METALLOGRAPHY; X RAY DIFFRACTION;

BIRCH-MURNAGHAN EQUATION OF STATE; DEEP MANTLES; HEAT SOURCES; LASER-HEATED DIAMOND ANVIL CELLS; PRESSURE DERIVATIVES; RADIOACTIVE DECAY; STRUCTURAL CHARACTERIZATION; URANIUM OXIDES;

CRYSTAL STRUCTURE;

CRYSTAL STRUCTURE; DIAMOND ANVIL CELL; EXPERIMENTAL MINERALOGY; LOWER MANTLE; P-T CONDITIONS; PHASE TRANSITION; RADIOACTIVE DECAY; URANINITE; X-RAY DIFFRACTION;

EID: 49549085244     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2008.2735     Document Type: Article

References (36)

1. Albarède, F. (2005) The survival of mantle geochemical heterogeneities. In R.D. van der Hilst, J.D. Bass, J. Matas, and J. Trampert, Eds., Earth's Deep Mantle: Structure, Composition and Evolution, p. 27-46. American Geophysical Union, Washington, D.C.
2. Amoretti, G., Blaise, A., Caciuffo, R., Fournier, J.M., Hutchings, M.T., Osborn, R., and Taylor, A.D. (1989) 5f-electron states in U dioxide investigated using high-resolution neutron spectroscopy. Physical Review B, 40, 3, 1856-1870.
3. Angel, R.J. (2001) High-pressure powder diffraction. EosFit5.2 software. Available online.
4. Benedict, U., Andreetti, G.D., Fournier, J.M., and Waintal,A. (1982) X-ray powder diffraction study of the high pressure behaviour of uranium dioxide. Journal de Physique Lettres, 43, 171-177.
5. 2 to 650 kbar. Carnegie Institute Yearbook, Washington, 80, 280-283.
6. 2. High Pressure Research, 2, 381-389.
7. Davaille, A., Stutzman, E., Silveira, G., Besse, J., and Courtillot, V. (2005) Convective patterns under the Indo-Atlantic Box. Earth and Planetary Science Letters, 239, 233-252.
8. 2: Crystalline structures and equations of state. Physical Review B, 59, 8467-8472.
9. Dewhurst, J.K. and Lowther, J. E. (2001) Highly coordinated metal dioxides in the cotunnite structure. Physical Review B, 64, 014104.
10. 2 polymorph. Physical Review Letters, 87, 275501.
11. 2 to 70 GPa and pressure-induced phase transformation from the fluorite structure. Physical Review B, 38, 7755-7758.
12. Fayek, M., Burns, P., Guo, Y-X., and Ewing, R.C. (2000) Micro-structures associated with uraninite alteration. Journal of Nuclear Materials, 277, 204-210.
13. Fournier, J.M. and Manes, L. (1985) Actinide solids 5f dependence of physical properties. In L. Manes, Ed., Actinides- chemistry and physical properties, book series structure and bonding, 59, p. 1-56. Springer-Verlag, Berlin.
14. Gautron, L., Greaux, S., Andrault, D., Bolfan-Casanova, N., Guignot, N., and Bouhifd, M.A. (2006) Uranium in the Earth's lower mantle. Geophysical Research Letters, 33, L23301, DOI: 10.1029/2006GL027508.
15. Greaux, S., Farges, F., Gautron, L., Flank, A-M., and Lagarde, P. (2007) Redox and speciation of U in Al-rich perovskites from high-pressure/high temperature conditions. In B. Hedman and P. Pianetta, Eds., X-Ray absorption fine structure-XAFS 13, 882, p. 259-261. 13th International Conference, AIP Conference Proceedings.
16. Guignot, N. and Andrault, D. (2004) Equation of state of Na-K-Al host phases and implications for MORB density in the lower mantle. Physics Earth Planetary. Interior, 143-144, 107-128.
17. Haines, J., Léger, J.M., and Atouf, A. (1995) Crystal structure and equation of state of cotunnite-type zirconia. Journal of American Ceramic Society 78, 445-448.
18. 2-Journal of Physics: Condensed Matter, 8, 1631-1646.
19. Haines, J., Léger, J.M., and Shulte, O. (1996b) Pa3-type modified fluorite-type structures in metal dioxides at high pressure. Science, 271, 629-631.
20. Haines, J., Léger, J.M., Hull, S. Petitet, J.P., Pereira, A.S., Perottoni, C.A., and Da Jornada, J.A.H. (1997) Characterization of the cotunnite-type phases of zirconia and hafnia by neutron diffraction and Raman spectroscopy. Journal of American Ceramic Society, 80, 1910-1914.
21. Helffrich, G.R. and Wood, B.J. (2001) The Earth's mantle. Nature, 412, 501-507.
22. 2. Physical Review B, 70, 014113.
23. Izumi, F. and Dilanian, R.A. (2005) Commission on powder diffraction. IUCr Newsletter, 32, 59-63.
24. Janeczek, J. and Ewing, R.C. (1992) Structural formula of uraninite. Journal of Nuclear Materials, 190, 128-132.
25. Kellogg, L.H., Bradford, H.H., and Van der Hilst, R.D. (1999) Compositional stratification in the deep mantle. Science, 283, 1881-1884.
26. 2 using a diamond anvil and single crystal X-Ray diffraction method. Physics and Chemistry of Minerals, 13, 233-237.
27. 2. Journal of Physics and Chemistry of Solids, 57, 7-16.
28. Liu, L.G. (1980) High-pressure phase transformations of fluorite-type dioxides. Earth Planetary Science Letters, 49, 166-172.
29. Ohtaka, O., Yamanaka, T., Kume, S., Hara, N., Asano, H., and Izumi, F. (1995) Structural analysis of orthorhombic hafnia by neutron powder diffraction. Journal of American Ceramic Society, 78, 233-237.
30. 2 to 100 GPa. Journal of Applied Crystallography, 38, 727-733.
31. Samuel, H. and Farnetani, C.G. (2003) Thermochemical convection and helium concentrations in mantle plumes. Earth Planetary Science Letters, 207, 39-56.
32. Shannon, R.D. (1976) Revised effective Ionic Radii and systematics studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 751-767.
33. Turcotte, D.L., Paul, D., and White, W.M. (2001) Thorium-Uranium systematics require layered mantle convection. Journal of Geophysical Research, 106(B3), 4265-4276.
34. Van der Hilst, R.D. and Karason, H. (1999) Compositional heterogeneity in the bottom 1000 kilometers of Earth's mantle: Toward a hybrid convection model. Science, 283, 1885-1888.
35. Wyckoff, R.W.G. (1951) Crystal Structures. Interscience, New York.
36. 2. Journal of Geophysical Research, 85, B12, 6991-6995.