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University of Massachusetts Amherst
Anisotropy of magnetic susceptibility; electron backscatter diffraction; haematite; haemo-ilmenite; lamellar magnetism; natural remanent magnetization
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Crystallographic–Magnetic Correlations In Single-Crystal Haemo-Ilmenite: New Evidence For Lamellar Magnetism, P. Robinson, F. Heidelbach, A. M. Hirt, S. A. Mcenroe, Laurie Brown
Crystallographic–Magnetic Correlations In Single-Crystal Haemo-Ilmenite: New Evidence For Lamellar Magnetism, P. Robinson, F. Heidelbach, A. M. Hirt, S. A. Mcenroe, Laurie Brown
Laurie Brown
17 single crystals were identified by electron backscatter diffraction (EBSD) and isolated from coarse massive haemo-ilmenite ore from South Rogaland, Norway. These were studied using the EBSD results, natural remanent magnetization (NRM), and anisotropy ofmagnetic susceptibility (AMS), to gain a better understanding of angular relationships between crystallographic axes and magnetic properties of haemo-ilmenite in relation to lamellar magnetism. Electron microprobe analyses gave the following average end-member compositions for ilmenite host: 21.1 per cent MgTiO3, 73.7 FeTiO3, 0.5 MnTiO3, 4.3 Fe2O3, 0.2 Cr2O3 and 0.3 V2O3; and for the coarsest (∼3 μm) haematite exsolution lamellae: 3.5 MgTiO3, 22.4 FeTiO3, 71.4 Fe2O3, …