On Stilpnomelane from North Wales1

A. F. Hallimond and F. R. Ennos
Assistant Curator, Museum of Practical Geology, London
1Communicated by permission of the Director, H.M. Geological Survey.

Mineralogical Magazine; March 1924 v. 20; no. 104; p. 193-197; DOI: 10.1180/minmag.1924.020.104.04
© 1924, The Mineralogical Society
Mineralogical Society (www.minersoc.org)