The Mineralogical Similarity of Precious and Common Opal from Australia

P. Bayliss and P. A. Males

School of Applied Geology, University of New South Wales, Box 1, Kensington, N.S.W., Australia.

Mineralogical Magazine; June 1965 v. 35; no. 270; p. 429-431; DOI: 10.1180/minmag.1965.035.270.22
© 1965, The Mineralogical Society
Mineralogical Society (www.minersoc.org)