1988 Compilation of Elemental Concentration Data for USGS Basalt BCR‐1

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Abstract
Concentration data on up to 82 individual constituents in USGS Basalt BCR‐1 have been collected from 1395 journal articles and technical reports. These data are summarized in consensus (mean) values with uncertainties expressed as ± one standard deviation. Mean values are also calculated as a function of analytical procedure and all raw data are given in the tables. Recommended values are proposed based upon data criteria used by NIST (National Institute of Standards and Technology, formerly the National Bureau of Standards or NBS).