On the feasibility of NBS 70a K-feldspar as a Rb-Sr age reference sample

W. Compston*, B. W. Chappell, P. A. Arriens, M. J. Vernon

*Corresponding author for this work

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    X-ray fluorescence and isotope dilution analyses establish the NBS 70a K-feldspar as sufficiently homogeneous after regrinding to serve as an interlaboratory Rb-Sr age reference sample. Similar coefficients of variation at approximately 0.2% for a single analysis using 0.1 g samples are obtained for Rb (530 ppm), Sr (65.1 ppm) and radiogenic Sr (3.0 ppm), both between bottles and within bottles.

    Original languageEnglish
    Pages (from-to)753-757
    Number of pages5
    JournalGeochimica et Cosmochimica Acta
    Volume33
    Issue number6
    Publication statusPublished - Jun 1969

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  • Cite this

    Compston, W., Chappell, B. W., Arriens, P. A., & Vernon, M. J. (1969). On the feasibility of NBS 70a K-feldspar as a Rb-Sr age reference sample. Geochimica et Cosmochimica Acta, 33(6), 753-757.