A Possible Source of Error in the Determination of Symmetry from Optical Extinction-Angles

Max H. Hey

Assistant-Keeper in the Mineral Department of the British Museum of Natural History.

Mineralogical Magazine; June 1933 v. 23; no. 141; p. 367-370; DOI: 10.1180/minmag.1933.023.141.02
© 1933, The Mineralogical Society
Mineralogical Society (www.minersoc.org)