Oriented Overgrowth of Hematite on Beta-Alumina

E. R. Segnit
Division of Building Research, Commonwealth Scientific and Industrial Research Organization, Highett, Victoria, Australia

Summary: An alkali-alumina-silica slag from the interior of a kiln used for the firing of refractories was found to contain recrystallized mullite, corundum, and beta-alumina. Isolated areas of the slag were also rich in iron oxides; in these areas beta-alumina crystallized from the melt as hexagonal plates, and at a later stage small hexagonal plates of bematite grew on the 0001 face of the beta-alumina plates in a regular fashion.

Mineralogical Magazine; 1965 v. 34; no. 268; p. 416-422; DOI: 10.1180/minmag.1965.034.268.37
© 1965, The Mineralogical Society
Mineralogical Society (www.minersoc.org)