Nacrite from Groby, Leicestershire

G. F. Claringbull
Department of Mineralogy, British Museum.

Mineralogical Magazine; September 1952 v. 29; no. 218; p. 973; DOI: 10.1180/minmag.1952.029.218.12
© 1952, The Mineralogical Society
Mineralogical Society (www.minersoc.org)