PL EN


Preferences help
enabled [disable] Abstract
Number of results
2001 | 100 | 5 | 743-750
Article title

Crystallochemical Structure of Tourmalines Inferred from Mössbauer Spectroscopy

Content
Title variants
Languages of publication
EN
Abstracts
EN
In the Y octahedra of tourmalines theoretically may occur ions of Fe^{2+} and Fe^{3+}. The authors discuss Mössbauer measurements and confirm the ordered model of ionic distribution at these sites: the presence of Fe^{3+} ions in the Y octahedra and Al^{3+} ions in the Z octahedra. The spectra of different tourmalines annealed at temperatures ranging from 873 K to 1153 K show that Fe^{3+} ions can occur in both of these sites. The annealing has changed the symmetry of the neighbourhood of iron ions at the octahedral sites. It has been shown that the doublets with QS<2.00 mm/s should not been attributed to Fe^{2+}(Z). Also new results corroborating the existence of the iron ions in the mixed valence state in tourmalines have been presented.
Keywords
EN
Year
Volume
100
Issue
5
Pages
743-750
Physical description
Dates
published
2001-11
received
2001-05-14
References
  • 1. M. deCoster, H. Pollack, S. Amelinckx, Phys. Status Solidi, 3, 283, 1963
  • 2. E. Hermon, E.J. Simkin, G. Donnay, W.B. Muir, Tschermaks Mineral. Petrogr. Mitt., 19, 124, 73
  • 3. J.D. Grice, T.S. Ercit, N. Jb. Miner. Abh, 165, 245, 1993
  • 4. F.C. Hawthorne, D.J. MacDonald, P.C. Burns, Am. Mineral., 78, 265, 1993
  • 5. Y. Fuchs, M. Lagache, J. Linares, Am. Mineral., 83, 525, 1998
  • 6. V. Kahlenberg, B. Velickov, Eur. J. Min., 12, 947, 2000
  • 7. A. Pieczka, J. Kraczka, W. Zabiński, J. Czech. Geol. Soc., 43, 1-2, 69, 1998
  • 8. J. Kraczka, A. Pieczka, Mol. Phys. Rep., 30, 80, 2000
  • 9. A. Pieczka, Eur. J. Min., 12, 589, 2000
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv100n504kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.