Hyperfine Interactions

, Volume 91, Issue 1, pp 685–688 | Cite as

Mössbauer study of pure illite and its firing products

  • E. Murad
  • U. Wagner
Geology, Mineralogy, and Archeology


Eight illites with an iron content between 0.8% and 8.4%, which X-ray diffraction indicated to be free from interference from other iron-bearing minerals, were studied by Mössbauer spectroscopy at room temperature and 4.2 K. The Fe3+ quadrupole splitting varied from 0.59 mm/s for the iron-rich illites (>5 wt.% Fe) to 0.73 mm/s for those poor in iron (≲wt.% Fe). A distinction of iron sites in the illites with cis- and trans-OH coordination was not possible. The products of firing one illite at temperatures up to 1300 ‡C were also studied and revealed the disappearance of Fe2+, the gradual dehydroxylation of illite, and characteristic features of the products formed at higher temperatures.


Iron Spectroscopy Thin Film Characteristic Feature Iron Content 
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  1. [1]
    J. Środón and D.D. Eberl, Rev. Miner. 13(1984)495.Google Scholar
  2. [2]
    E. Murad and U. Wagner, Clay Miner. 29(1994), in press.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • E. Murad
    • 1
  • U. Wagner
    • 2
  1. 1.Lehrstuhl für BodenkundeTechnische Universität MünchenFreising-WeihenstephanGermany
  2. 2.Physik-Department E15Technische Universität MünchenGarchingGermany

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