Description of Large Crystals of Seligmannite and Dufrenoysite1

R. H. Solly
1The drawings illustrating this paper were prepared by Dr. G. F. Herbert Smith. In order to identify certain of the faces he measured the smaller crystals on the three-circle goniometer in the British Museum and found a few additional new forms on the second crystal of dufrenoysite, which have been incorporated in the list given on p. 286.

Mineralogical Magazine; December 1912 v. 16; no. 76; p. 282-286; DOI: 10.1180/minmag.1912.016.76.05
© 1912, The Mineralogical Society
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