| Institution: | 1. Max‐Planck‐Institut für Chemie, Postfach 3060, 55020 Mainz, Germany;2. US Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, CO 80225, USA;3. Leibniz‐Institut für Meereswissenschaften, IFM‐GEOMAR, Wischhofstra?e 1‐3, 24148 Kiel, Germany;4. Saskatchewan Isotope Laboratory, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada;5. Institut für Mineralogie, Leibniz Universit?t Hannover, Callinstrasse 3, 30167 Hannover, Germany;6. LMTG, Université de Toulouse III, 14 Avenue E. Belin, 31400 Toulouse, France;7. Department für Geo‐ und Umweltwissenschaften, Ludwig‐Maximilians‐Universit?t München, Theresienstrasse 41, 80333 Munich, Germany;8. Pacific Centre for Isotopic and Geochemical Research, Department of Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada;9. Department of Geology;10. University of Maryland, College Park, MD 20742‐4211, USA;11. Johannes Gutenberg‐Universit?t Mainz, Institut für Geowissenschaften, Johann‐Joachim‐Becher‐Weg 21, 55128 Mainz, Germany;12. Max‐Planck‐Institut für Chemie, Postfach 3060, 55020 Mainz, Germany;13. Institut Isotopengeologie und Mineralische Rohstoffe, Eidgen?ssische Technische Hochschule Zürich, Clausiusstrasse 25, 8092 Zürich, Switzerland;14. Institut für Mineralogie, Westf?lische Wilhelms‐Universit?t, Corrensstr. 24, 48149 Münster, Germany;15. Istituto di Geoscienze e Georisorse‐CNR, Pisa 56124, Italy;16. University of Melbourne, Melbourne, Victoria, 3010, Australia |
| Abstract: | This paper contains the results of an extensive isotopic study of United States Geological Survey GSD‐1G and MPI‐DING reference glasses. Thirteen different laboratories were involved using high‐precision bulk (TIMS, MC‐ICP‐MS) and microanalytical (LA‐MC‐ICP‐MS, LA‐ICP‐MS) techniques. Detailed studies were performed to demonstrate the large‐scale and small‐scale homogeneity of the reference glasses. Together with previously published isotopic data from ten other laboratories, preliminary reference and information values as well as their uncertainties at the 95% confidence level were determined for H, O, Li, B, Si, Ca, Sr, Nd, Hf, Pb, Th and U isotopes using the recommendations of the International Association of Geoanalysts for certification of reference materials. Our results indicate that GSD‐1G and the MPI‐DING glasses are suitable reference materials for microanalytical and bulk analytical purposes. |
