2ND REPORT (1993) ON THE 1ST 3 GIT-IWG ROCK REFERENCE SAMPLES - ANORTHOSITE FROM GREENLAND, AN-G BASALTE-DESSEY-LA-COTE, BE-N GRANITE-DE-BEAUVOIR, MA-N

The first report (1980) on the three samples, Anorthosite AN-G, Basalt BE-N and Granite MA-N resulted in the chemical characterization of major, minor and 30 trace elements. The present report confirms the validity of a great majority of these working values, in addition to presenting working values for 20 more trace elements for each sample. Only compiled data on trace elements are presented, followed by Tables of statistical parameters used as a basis for their evaluation, both statistical and subjective. A plea is made to obtain more data on platinum group elements and on other ''difficult'' trace elements (Au, B, Bi, Se, Te, Tl, ...). The three samples have been processed in 900 kg amounts and, therefore, they are likely to remain available for some decades to come. As such, it is certainly worthwhile to take pains to characterize them well for even these difficult trace elements.