The variability of chemical analyses as a function of sample heterogeneity, and the implications to the analyses of rock standards

Details The variability of chemical analyses as a function of sample heterogeneity, and the implications to the analyses of rock standards The variability of chemical analyses as a function of sample heterogeneity, and the implications to the analyses of rock standards

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976gecoa..40.1375r&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 40, Issue 11, pp.1375-1379

Physics

Scientific paper

The errors in the chemical analyses of a granodiorite rock powder for 6 constituents (K 2 O, Na 2 O, CaO, Fe 2 O 3 , MgO, and MnO) have been determined by replicate analyses of the whole rock and of a series of different sieved fractions. Sample inhomogeneity is indicated. This is confirmed by analyses of the fused rock powder. Fusion to a glass is therefore recommended for the preparation of geochemical rock standards.

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