Summary: Pure α-alumina and chromic oxide have been examined by means of the X-rag powder method. Tables are given showing intensities, indices (hexagonal and rhombohedral), and sinθ values from which accurate parameter values were calculated.
This paper is published by kind permission of Dr. T. Swinden, The United Steel Companies Limited, and Dr. Rees, The University, Sheffield.
Mineralogical Magazine; December 1944 v. 27; no. 187; p. 56-58; DOI: 10.1180/minmag.1944.027.187.03
© 1944, The Mineralogical Society
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