Further characterisation of the 91500 zircon crystal

Michael Wiedenbeck*, John M. Hanchar, William H. Peck, Paul Sylvester, John Valley, Martin Whitehouse, Andreas Kronz, Yuichi Morishita, Lutz Nasdala, J. Fiebig, I. Franchi, J. P. Girard, R. C. Greenwood, R. Hinton, N. Kita, P. R.D. Mason, M. Norman, M. Ogasawara, P. M. Piccoli, D. RhedeH. Satoh, B. Schulz-Dobrick, Skår, M. J. Spicuzza, K. Terada, A. Tindle, S. Togashi, T. Vennemann, Q. Xie, Y. F. Zheng

*Corresponding author for this work

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    Abstract

    This paper reports the results from a second characterisation of the 91500 zircon, including data from electron probe microanalysis, laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS), secondary ion mass spectrometry (SIMS) and laser fluorination analyses. The focus of this initiative was to establish the suitability of this large single zircon crystal for calibrating in situ analyses of the rare earth elements and oxygen isotopes, as well as to provide working values for key geochemical systems. In addition to extensive testing of the chemical and structural homogeneity of this sample, the occurrence of banding in 91500 in both backscattered electron and cathodoluminescence images is described in detail. Blind intercomparison data reported by both LA-ICP-MS and SIMS laboratories indicate that only small systematic differences exist between the data sets provided by these two techniques. Furthermore, the use of NIST SRM 610 glass as the calibrant for SIMS analyses was found to introduce little or no systematic error into the results for zircon. Based on both laser fluorination and SIMS data, zircon 91500 seems to be very well suited for calibrating in situ oxygen isotopic analyses.

    Original languageEnglish
    Pages (from-to)9-39
    Number of pages31
    JournalGeostandards and Geoanalytical Research
    Volume28
    Issue number1
    DOIs
    Publication statusPublished - 2004

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