On the Presentation of Chemical Analyses of Minerals

M. H. Hey
Assistant-Keeper in the Department of Mineralogy of the British Museum

Summary: Wherever the necessary data are available with adequate accuracy, the most satisfactory presentation of a chemical analysis is as empirical unit-cell contents, calculated from the cell-sides, density, and chemical data. When empirical unit-cell contents cannot be calculated, some assumption is necessary for a presentation having claims to any structural significance; the assumption to be made should be carefully chosen and explicitly stated. A number of assumptions suitable in special cases are discussed, as is the technique of calculating empirical unit-cell contents, and the effects of errors in the chemical analysis on the several forms of presentation.

Mineralogical Magazine; September 1939 v. 25; no. 166; p. 402-412; DOI: 10.1180/minmag.1939.025.166.04
© 1939, The Mineralogical Society
Mineralogical Society (www.minersoc.org)