Hyperfine Interactions

, Volume 50, Issue 1–4, pp 659–665

Extraterrestrial magnetite studied by Mössbauer spectroscopy

  • M. B. Madsen
  • S. Mørup
  • J. M. Knudsen
Magnetic Oxide Compounds

DOI: 10.1007/BF02407705

Cite this article as:
Madsen, M.B., Mørup, S. & Knudsen, J.M. Hyperfine Interact (1989) 50: 659. doi:10.1007/BF02407705

Abstract

The meteorite Orgueil is a carbonaceous chondrite of type CI. Carbonaceous chondrites contain Fe(III), Fe(II) and in some cases metallic iron, indicating that they are in a state far from thermodynamic equilibrium. In Orgueil about 40% of the iron is present in magnetite (Fe3O4). In this work a sample of magnetite grains extracted from Orgueil has been studied by Mössbauer spectroscopy. It has been found that the magnetic phase contains about 11% of maghemite and that the remaining magnetite has a vacancy concentration smaller than 0.006, corresponding to the formula Fe2.994O4.

Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1989

Authors and Affiliations

  • M. B. Madsen
    • 1
  • S. Mørup
    • 1
  • J. M. Knudsen
    • 2
  1. 1.Laboratory of Applied PhysicsTechnical University of DenmarkLyngbyDenmark
  2. 2.Physics LaboratoryH.C. Ørsted InstituteCopenhagen ØDenmark

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