PL EN


Preferences help
enabled [disable] Abstract
Number of results
2008 | 114 | 6 | 1683-1690
Article title

^{57}Fe Mössbauer Spectroscopy οf Radiation Damaged Allanites

Content
Title variants
Languages of publication
EN
Abstracts
EN
Metamict minerals contain radioactive elements that degrade the crystal structure of the minerals. The degradation occurs primarily through progressive overlapping recoil nuclei collision cascades from α-decays of ^{238}U, ^{232}Th, ^{235}U and their daughter products. We report the results of ^{57}Fe Mössbauer spectroscopy, gamma-ray spectrometry and microprobe analysis of three partially metamict allanites, (Ca,Ce,REE)_2(Fe^{2+},Fe^{3+})(Al,Fe^{3+})_2O[Si_2O_7][SiO_4](OH) where REE stands for rare earth elements. The samples were collected in pegmatites from Reno, Nevada (USA), Franklin, New Jersey (USA) and Nya Bastnas Field (Sweden). The absorbed α-dose for these minerals was found to range from 5.8×10^{14} α-decay/mg for the allanite from Reno to 1.9×10^{15} α-decay/mg for the allanite from Franklin. The Mössbauer spectra show a decrease in the Fe^{2+} doublet intensity with increasing absorbed α-dose. We also observe an increase in the line widths of the Fe^{2+} and Fe^{3+} doublets with increasing absorbed α-dose.
Keywords
Contributors
author
  • Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland
author
  • Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warszawa, Poland
References
  • 1. R.C. Ewing, Nucl. Instrum. Methods Phys. Res. B 91, 22 (1994)
  • 2. W.J. Weber, R.C. Ewing, C.R.A. Catlow, T. Diaz de la Rubia, L.W. Hoobs, C. Kinoshita, H. Matzke, A.T. Motta, M. Nastas, E.K.H. Salje, E.R. Vance, S.J. Zinkle, J. Mater. Res. 13, 1434 (1998)
  • 3. A. Meldrum, L.A. Boatner, W.J. Weber, R.C. Ewing, Geochim. Cosmochim. Acta 62, 2509 (1998)
  • 4. D. Malczewski, J.E. Frąckowiak, E.V. Galuskin, Hyperfine Interact. 166, 529 (2005)
  • 5. R.C. Ewing, R.F. Haaker, Nucl. Chem. Waste Management 1, 51 (1980)
  • 6. W.A. Dollase, Am. Mineral. 56, 447 (1971)
  • 7. A. Volborth, Econ. Geol. 57, 209 (1962)
  • 8. D. Holtstam, Geologiska Föreningens i Stockholm Förhandlinger 126, 149 (2004)
  • 9. R.A. Volkert, R.E. Zartman, P.B. Moore, Precambrian Res. 1391 (2005)
  • 10. W.A. Dollase, Z. Kristallogr. 138, 41 (1973)
  • 11. F.C. Hawthorne, L.A Groat, M. Raudsepp, N.A. Ball, M. Kimata, R. Gaba, N.M. Halden, G.R. Lumpkin, R.C. Ewing, R.B. Greegor, F.W. Lytle, T.S. Ercit, G.R. Rossman, F.J. Wicks, R.A. Ramik, B.L. Sherriff, M.E. Fleet, C. McCammon, Am. Mineral. 76, 370 (1991)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n626kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.