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Issue 5, 2015
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Quadrupole LA-ICP-MS U/Pb geochronology of baddeleyite single crystals

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Abstract

We present a straightforward method for accurate and precise U/Pb dating of baddeleyite using quadrupole LA-ICP-MS. To establish the validity of our ICP-MS data we used FC-4b baddeleyite from the Duluth complex as external standard, whereas baddeleyite from the Phalaborwa (South Africa) and the Sorkka (SW Finland) intrusions were treated as unknowns. The analytical protocol includes the use of a matrix matched standard, which allows for an accurate downhole-fractionation and laser-induced interelement fractionation correction. The quadrupole ICP-MS results for the Phalaborwa and Sorkka samples analyzed are accurate within error of the published ID-TIMS U/Pb ages and with a precision of 0.3–0.7% (2σ) from concordia ages of ten to twenty analyses per sample. No orientation effects were observed.

Graphical abstract: Quadrupole LA-ICP-MS U/Pb geochronology of baddeleyite single crystals

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Publication details

The article was received on 03 Nov 2014, accepted on 04 Dec 2014 and first published on 16 Dec 2014


Article type: Technical Note
DOI: 10.1039/C4JA00400K
Citation: J. Anal. At. Spectrom., 2015,30, 1191-1196

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    Quadrupole LA-ICP-MS U/Pb geochronology of baddeleyite single crystals

    C. C. Wohlgemuth-Ueberwasser, U. Söderlund, V. Pease and M. K. M. Nilsson, J. Anal. At. Spectrom., 2015, 30, 1191
    DOI: 10.1039/C4JA00400K

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