High-temperature X-ray investigation of natural columbites

Physics and Chemistry of Minerals

Volumn 30, Issue 10, 2003, Pages 590-598

  Tarantino, S C ^a   Zema, M ^a   Pistorino, M ^a   Domeneghetti, M C ^a  

^a UNIVERSITY OF PAVIA   (Italy)

Author keywords

Columbite; HT X ray diffraction; Thermal expansion

Indexed keywords

ANISOTROPY; CRYSTAL STRUCTURE; HIGH TEMPERATURE OPERATIONS; IMPURITIES; POSITIVE IONS; THERMAL EXPANSION; X RAY DIFFRACTION ANALYSIS;

OCTAHEDRAL SITES;

NIOBATE MINERALS;

ACCESSORY MINERAL; COLUMBITE; CRYSTAL STRUCTURE; EXPERIMENTAL MINERALOGY; HIGH TEMPERATURE; PEGMATITE; X-RAY DIFFRACTION;

EID: 0345149394     PISSN: 03421791     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00269-003-0345-z     Document Type: Article

References (23)

1. Blessing RH (1995) An empirical correction for absorption anisotropy. Acta Crystallogr (A) 51: 33-38
2. Blessing RH, Coppens P, Becker P (1974) Computer analysis of step-scanned X-ray data. J Appl. Crystrallogr 7: 488-492
3. Cannillo E, Germani G, Mazzi F (1983) New crystallographic software for Philips PW 1100 single-crystal diffractometer. CNR Centro di Studio per la Cristallografia, Internal Report 2
4. Černý P, Turnock AC (1971) Niobium-tantalum minerals from granitic pegmatites at Greer Lake, southeastern Manitoba. Can Mineral 10: 755-772
5. Černý P, Ercit TS (1985) Some recent advances in the mineralogy and geochemistry of Nb and Ta in rare-element granitic pegmatites. Bull Minéral 108: 499-532
6. Černý P, Goad BE, Hawthorne FC, Chapman R (1986) Fractionation trends of the Nb- and Ta-bearing oxide minerals in the Greer Lake pegmatitic granite and its pegmatite aureole, southwestern Manitoba. Am Mineral 71: 501-517
7. Donovan JJ, Rivers ML (1990) PRSUPR-a PC based automation and analysis software package for wavelength-dispersive electron-beam microanalysis. Microbeam Anal 66-68
8. Ercit TS (1994) The geochemistry and crystal chemistry of columbite group granitic pegmatites, southwest Grenville Province, Canadian Shield. Can Mineral 32: 421-438
9. Ercit TS, Wise MA, Černý P (1995) Compositional and structural systematics of the columbite group. Am Mineral 80: 613-619
10. Griffen DH, Ribbe PH (1979) Distortion in the tetrahedral oxyanions of crystalline substances. N J Mineral Abh 137: 54-73
11. Ibers JA, Hamilton WC (1974) International tables for X-ray crystallography vol 4. Kynoch Press, Birmingham, UK, pp 99-101
12. Komkov AI (1970) Relationship between the X-ray constants of columbites and composition. Døkl Akad Nauk SSSR 195: 117-119
13. Lahti SI (1987) Zoning in columbite-tantalite crystals from the granitic pegmatites at Eräjärvi area, southern Finland. Geoch Cosmoch Acta 51: 509-517
14. Lehman MS, Larsen FK (1974) A method for location of the peaks in step-scan measured Bragg reflections. Acta Crystrallogr (A)30: 580-584
15. Mulja T, Williams-Jones AE, Martin RF, Wood SA (1996). Compositional variation and structural state of columbite-tantalite in rare-element granitic pegmatites of the Preissac-Lacorne batholith, Quebec, Canada. Am Mineral 81: 146-157
16. Nickel EH, Rowland JF, McAdam RC (1963) Ixiolite - a columbite substructure. Am Mineral 48: 961-979
17. North ACT, Phillips DC, Mathews FS (1968) A semi-empirical method of absorption correction. Acta Crystrallogr (A) 24: 351-359
18. Sheldrick GM (1996) SADABS. Institüt für Anorganische Chemie der Universität, Göttingen, Germany
19. Sheldrick GM (1998) SHELX97 - Programs for crystal structure analysis (release 97-2). Institüt für Anorganische Chemie der Universität. Göttingen, Germany
20. Schneider H. Eberhard E (1990) Thermal expansion of mullite. J Am Ceram Soc 73: 2073-2076
21. Trueman DL, Černý P (1982) Exploration for rare-element granitic pegmatites. In: Mineralogical Association of Canada Short Course Handbook 8: 463-491
22. Turnock AC (1965) Synthetic wodginite, tapiolite and tantalite Can Mineral 8: 461-470
23. Wise MA, Turnock AC, Černý P (1985) Improved unit-cell dimensions for ordered columbite-tantalite end members. N Jb Miner Mh 8: 372-378