Structural changes induced by cation ordering in ferrotapiolite

Mineralogical Magazine

Volumn 70, Issue 3, 2006, Pages 319-328

  Zema, Michele ^a   Tarantino, S C ^a   Giorgiani, A ^a  

^a UNIVERSITY OF PAVIA   (Italy)

Author keywords

Order disorder; Single crystal X ray diffraction; Tapiolite

Indexed keywords

LATTICE CONSTANTS; ORDER DISORDER TRANSITIONS; POSITIVE IONS; QUENCHING; SINGLE CRYSTALS; X RAY DIFFRACTION ANALYSIS;

CATION ORDERING; FERROTAPIOLITE;

IRON COMPOUNDS;

CATION; CRYSTAL STRUCTURE; CRYSTALLOGRAPHY; LATTICE DYNAMICS; TAPIOLITE; X-RAY DIFFRACTION;

EID: 33845503023     PISSN: 0026461X     EISSN: None     Source Type: Journal    
DOI: 10.1180/0026461067030335     Document Type: Article

References (18)

1. 6. Journal of Physics and Chemistry of Solids, 62, 1239-1242.
2. Baur, W.H. (1994) Rutile type derivatives. Zeitschrift für Kristallographie, 209, 143-150.
3. Betteridge, P.W., Carruthers, J.R., Cooper, R.I., Prout, K. and Watkin, D.J. (2003) CRYSTALS version 12: software for guided crystal structure analysis. Journal of Applied Crystallography, 36, 1487.
4. Blessing, R.H. (1995) An empirical correction for absorption anisotropy. Acta Crystallographica, A51, 33-38.
5. Carruthers, J.R. and Watkin, D.J. (1979) Chebychev Weighting. Acta Crystallographica, A35, 698-699.
6. Donovan, J.J. and Rivers, M.L. (1990) PRSUPR - A PC Based Automation and Analysis Software Package for Wavelength-Dispersive Electron-Beam Microanalysis. Microbeam Analysis, 66-68.
7. Goldschmidt, V.M. (1926) Geochemische Verteilungsgesetze der Elemente. VI. Über die Kristallstrukturen vom Rutiltypus mit Bermerkungen zur Geochemie Zweiwertiger und Vierwertiger Elemente. Videnskapsselskapets Academii i Oslo I, Math.-Naturv. Klasse, Skrifter, 1, 5-21.
8. Hansen, S., Landa-Cánovas, A., Ståhl, K. and Nilsson, J. (1995) Cation ordering waves in trirutiles. When X-ray crystallography fails? Acta Crystallographica, A51, 514-519.
9. Ibers, J.A. and Hamilton, W.C. (1974) International Tables for X-ray Crystallography. Kynoch Press, Birmingham, UK, vol. 4, pp. 99-101.
10. Kinast, E.J., Zawislak, L.I., da Cunha, J.B.M., Antonietti, V., de Vasconcellos, M.A.Z. and dos Santos, C.A. (2002) Coexistence of rutile and trirutile phases in a natural tapiolite sample. Journal of Solid State Chemistry, 163, 218-223.
11. Larson, A.C. (1970) The inclusion of secondary extinction in least-squares refinement of crystal structures. Pp. 291-294 in: Crystallographic Computing (F.R. Ahmed, S.R. Hall and C.P. Huber, editors). Munksgaard, Copenhagen.
12. 6 compounds. Journal of Magnetism and Magnetic Materials, 196-197, 846-847.
13. Novák, M., Černý, P., Cempírek, J., Šrein, V. and Filip, J. (2004) Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb). The Canadian Mineralogist, 42, 1117-1128.
14. 2. Zeitschrift für Kristallographie, 218, 585-589.
15. Robinson, K., Gibbs, G.V. and Ribbe, P.H. (1971) Quadratic elongation, a quantitative measure of distortion in co-ordination polyhedra. Science, 172, 567-570.
16. Shannon, R.D. (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica, A32, 751-767.
17. Turnock, A.C. (1966) Synthetic wodginite, tapiolite and tantalite. The Canadian Mineralogist, 8, 461-470.
18. Wise, M.A. and Černý, P. (1996) The crystal chemistry of the tapiolite series. The Canadian Mineralogist, 34, 631-647.