Subcalcic Ferroaugite from Mount Arthur, East Griqualand

Arie Poldervaart
Geology Department, University of Cape Town.
Communicated by Prof. F. Walker

Abstract: A new analysis of a subcalcic ferroaugite is given. The calculated composition is compared with compositions deduced from the optical properties according to various methods. Slight modifications to Benson's nomenclature of the clinopyroxenes are suggested.

Mineralogical Magazine; September 1947 v. 28; no. 198; p. 159-163; DOI: 10.1180/minmag.1947.028.198.05
© 1947, The Mineralogical Society
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