Magnetic phases in hemo-ilmenite

Insight from low-velocity and high-field Mössbauer spectroscopy

C. Frandsen*, S. Mørup, S. A. McEnroe, P. Robinson, F. Langenhorst

*Corresponding author for this work

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We have studied natural samples of hemo-ilmenite (ilmenite with hematite exsolution lamellae) by use of Mössbauer spectroscopy. The samples are from the Allard Lake intrusion in Quebec. The stoichiometric compositions of the ilmenite host and the hematite lamellae are approximately Fe2+0.84Mg2+ 0.14Ti4+ 0.98Fe3+ 0.04O3 and Fe2+ 0.17Mg2+0.01Ti4+ 0.18Fe3+1.64O3, respectively. From low-velocity Mössbauer measurements, the Fe2+ and Fe3+ components of the Fe2+ -substituted hematite and Fe3+ -substituted ilmenite, formed by incomplete exsolution of hematite and ilmenite, have been suggested identified. High-field Mössbauer measurements, obtained at low-temperature indicate the presence of a minor ferrimagnetic component.

Original languageEnglish
Article numberL07306
Pages (from-to)1-5
Number of pages5
JournalGeophysical Research Letters
Issue number7
Publication statusPublished - 16 Apr 2007
Externally publishedYes

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    Frandsen, C., Mørup, S., McEnroe, S. A., Robinson, P., & Langenhorst, F. (2007). Magnetic phases in hemo-ilmenite: Insight from low-velocity and high-field Mössbauer spectroscopy. Geophysical Research Letters, 34(7), 1-5. [L07306].