Potash-Oligoclase from Mt. Erebus, Antarctic, and Anorthoclase from Mt. Kenya, East Africa

E. D. Mountain
Assistant in the Mineral Dept., British Museum (Natural History).

Mineralogical Magazine; June 1925 v. 20; no. 109; p. 331-345; DOI: 10.1180/minmag.1925.020.109.03
© 1925, The Mineralogical Society
Mineralogical Society (www.minersoc.org)