Summary: A modification of the rules for the calculation of C.I.P.W. norms when no normative quartz is present is suggested.
Mineralogical Magazine; 1965 v. 34; no. 268; p. 276-282; DOI: 10.1180/minmag.1965.034.268.23
© 1965, The Mineralogical Society
Mineralogical Society (www.minersoc.org)