A Graphic Method for the Comparison of Minerals with Four Variable Components Forming Two Isomorphous Pairs1

Edward S. Simpson
Mineralogist and Chemist, Geological Survey of Western Australia
1Published by permission of the Government Geologist of Western Australia.

Mineralogical Magazine; December 1920 v. 19; no. 91; p. 99-106; DOI: 10.1180/minmag.1920.019.91.03
© 1920, The Mineralogical Society
Mineralogical Society (www.minersoc.org)