Pattern of minor element enrichment in columbites: A synchrotron radiation X-ray fluorescence (SRXRF) study

Chemical Geology

Volumn 225, Issue 3-4, 2006, Pages 402-410

  Mirao J P ^a   Figueiredo, M O ^b  

^a UNIVERSITY OF ÉVORA   (Portugal)

^b UNIVERSIDADE NOVA DE LISBOA   (Portugal)

Author keywords

Columbite; Pegmatites; Solid solutions; Synchrotron microprobe; Trace elements

Indexed keywords

COLUMBITE; CRYSTAL STRUCTURE; PEGMATITE; SOLID SOLUTION;

EID: 30744435328     PISSN: 00092541     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.chemgeo.2005.08.031     Document Type: Article

References (24)

1. N.L., Allan, J.D., Blundy, J.A., Purton, M.Y., Lavrantiev, B.J., Wood Trace element incorporation in minerals and melts C.A. Geiger Solid Solutions in Silicate and Oxide Systems of Geological Importance EMU Notes in Mineralogy vol. 3, 2001. 251-302.
2. I.D., Brown, Chemical and steric constraints in inorganic solids Acta Crystallogr., B 48, 1992. 553-572.
3. P., Černý, T.S., Ercit, Some recent advances in the mineralogy and geochemistry of Nb and Ta in rare-element pegmatites Bull. Minéral. 108, 1989. 499-532.
4. P., Černyacute;, T.S., Ercit, M.A., Wise, The tantalite-tapiolite gap: Natural assemblages versus experimental data Can. Mineral. 30, 1992. 587-596.
5. P., Černý, B.E., Goad, F.C., Hawthorne, R., Chapman, Fractionation trends of the Nb- and Ta-bearing oxide minerals in the Greer Lake pegmatitic granite and its pegmatite aureole, southeastern Manitoba. Am. Mineral. 71, 1986. 501-517.
6. P., Chevallier, P., Dhez, F., Legrand, A., Erko, Y., Agafonov, L.A., Panchenko, A., Yakshin, The Lure-IMT X-ray fluorescence photon microprobe. J. Trace Microprobe Tech. 14, 1996. 517-539.
7. R.J., Claus, R.W., Hutchinson, Pegmatite deposits, Alto Ligonha, Portuguese East Africa. Econ. Geol. 51, 1956. 708-721.
8. T.S., Ercit, The geochemistry and crystal chemistry of columbite-group minerals from granitic pegmatites, southwestern Greeville province, Canadian shield. Can. Mineral. 32, 1994. 421-438.
9. T.S., Ercit, P., Wise, P., Černý, Compositional and structural systematics of the columbite group. Am. Mineral. 80, 1995. 613-619.
10. A., Figueiredo de Barros, B., Martins Vicente, Study of Pegmatitic Fields of Zambezia. Internal Report. Nuclear Energy Commission. 1963 127 pp (in Portuguese).
11. 0 transition metals. J. Solid State Chem. 115, 1995. 395-406.
12. C., Leal Gomes, Paragenetic indicators for pegmatitic mineralizations in the Naipa mining area, Zambézia, Mozambique L. Aires Barros Proceedings II Iberian Geochemistry Congress, Lisboa/Portugal, 1999. 121-124
13. 6 compounds (where M=Ca, Mn, Co or Zn) Mater. Res. Bull. 32, 1997. 847-855.
14. Mirão, J., 2004. Crystal chemistry of Columbite and Tapiolite (Zambezia pegmatites, Mozambique). Ph.D. Thesis, University of Évora, 170 pp (in Portuguese).
15. T., Mulja, A.E., Williams-Jones, R.F., Martin, S.A., Wood Compositional variation and structural state of Columbite-tantalite in rare-element granitic pegmatites of the Preissac-Lacorne batholith, Quebec, Canada Am. Mineral. 81, 1996. 146-157.
16. J.H., Sturdivant, The crystal structure of columbite Z. Kristallogr. Abt. A 75, 1930. 88-108.
17. A.G., Tindle, A.F., Breaks, Columbite-tantalite mineral chemistry from rare-element granitic pegmatites: Separation Lake area, N.W. Ontario, Canada Mineral. Petrol. 70, 2000. 165-198.
18. O., von Knorring, A., Fadipe, On the mineralogy and geochemistry of niobium and tantalum in some granite pegmatites and alkali granites of Africa. Bull. Minéral. 104, 1981. 496-507.
19. O., von Knorring, Th.G.E., Sahama, M., Lehtinen, Scandian ixiolite from Mozambique and Madagascar. Bull. Geol. Soc. Finland 41, 1969. 75-77.
20. J.X., Wang D., Piccot P., Chevallier, F., Legrand, K., Abbas VIRESYME: logiciel d'exploitation des spectres de fluorescence-X Note CEA-N-2756, 1993 231-235.
21. H., Weitzel, Kristallstrukturverfeinerung von Wolframiten und Columbiten. Z. Kristallogr. 144, 1976. 238-258.
22. M.A., Wise, P., Černý, A.U., Falster, Scandium substitution in columbite-group and ixiolite. Can. Mineral. 36, 1998. 673-680.
23. A.C., Zhang, R.C., Wang, H., Hu, H., Zhang, J.C., Zhu, X.M., Chen Chemical evolution of Nb-Ta oxides and zircon from the Koktokay N°3 granitic pegmatite, Altai, northwestern China. Mineral. Mag. 68, 2004. 739-756.
24. G.A.D., Zelt, Data for some African columbite-tantalite specimens Bull. Geol. Soc. Finland 47, 1975. 117-125.