Neutron Activation Analysis of Two USGS Rock Reference Samples (Granite G-2, Andesite AGV-I) and Discussion in The Light of Compiled Data |
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| Authors: | K GOVINDARAJU I ROELANDTS |
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| Institution: | Centre de Recherches Pétrographiques et Géochimiques (C.N.R.S.) C.O. No 1, 54500 Vandoeuvre-lès-Nancy, France;Geology, Petrology and Geochemistry Universitéof Liège, Sart-Tilman par Liège 1, Belgium |
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| Abstract: | New data for 21 trace elements including eight rare-earths, determined by neutron activation analysis (NAA) in two rook reference samples (Granite G-2, Andesite AGV-1), are compared with the preferred values previously proposed. Using compiled data published in 1969 and in 1972, further comparisons are made with the preferred means calculated for different methods of trace analysis. NAA data compiled in 1969 and in 1972 and new results published since then are assembled in two tables for the 21 elements. These 1976 NAA data lead us to suggest slight revisions of the preferred values for five to ton elements in each sample. |
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