publication . Article . 2007

Magnetization of exsolution intergrowths of hematite and ilmenite: Mineral chemistry, phase relations, and magnetic properties of hemo‐ilmenite ores with micron‐ to nanometer‐scale lamellae from Allard Lake, Quebec

McEnroe, Suzanne; Robinson, Peter; Langenhorst, F.; Frandsen, Catherine; Terry, Michael P.; Ballaran, Tiziana;
Open Access
  • Published: 30 Oct 2007 Journal: Journal of Geophysical Research, volume 112 (issn: 0148-0227, Copyright policy)
  • Publisher: American Geophysical Union (AGU)
  • Country: Norway
Abstract
[1] Hemo‐ilmenite ores from Allard Lake, Quebec, were first studied over 50 years ago. Interest was renewed in these coarsely exsolved oxides, based on the theory of lamellar magnetism as an explanation for the high and stable natural remanent magnetizations (NRMs), 32 to 120 A/m, reported here. To understand the magnetism and evolution of the exsolution lamellae, the microstructures and nanostructures were studied using scanning electron microscopy and transmission electron microscopy (TEM), phase chemistry, and relations between mineral chemistry and the hematite‐ilmenite phase diagram. Cycles of exsolution during slow cooling resulted in lamellae down to 1–2 ...
Subjects
free text keywords: Antiferromagnetism, Analytical chemistry, Coercivity, Electron microprobe, Crystal chemistry, Geology, Ilmenite, engineering.material, engineering, Hematite, visual_art.visual_art_medium, visual_art, Lamellar structure, Crystallography, Geophysics, Magnetization
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publication . Article . 2007

Magnetization of exsolution intergrowths of hematite and ilmenite: Mineral chemistry, phase relations, and magnetic properties of hemo‐ilmenite ores with micron‐ to nanometer‐scale lamellae from Allard Lake, Quebec

McEnroe, Suzanne; Robinson, Peter; Langenhorst, F.; Frandsen, Catherine; Terry, Michael P.; Ballaran, Tiziana;