New Crystal-Forms on Pyrites, Calcite, and Epidote1

L. J. Spencer
Assistant in the Mineral Department of the British Museum.
1Communicated by permission of the Trustees of the British Museum.

Mineralogical Magazine; March 1920 v. 19; no. 88; p. 1-9; DOI: 10.1180/minmag.1920.019.88.03
© 1920, The Mineralogical Society
Mineralogical Society (www.minersoc.org)