Topaz from the Meldon Aplite, Devonshire

M. Nawaz Chaudhry and R. A. Howie

Department of Geology, University of the Panjab, Lahore, West Pakistan
Department of Geology, King's College, London, W.C. 2

Summary: Chemical analyses, optical properties, specific gravities, and cell dimensions are presented for six topazes. A linear relationship is confirmed between the b cell dimension and the OH/(OH+F) ratio.

Mineralogical Magazine; June 1970 v. 37; no. 290; p. 717-720; DOI: 10.1180/minmag.1970.037.290.10
© 1970, The Mineralogical Society
Mineralogical Society (www.minersoc.org)