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American Mineralogist; July 2006; v. 91; no. 7; p. 1184-1187; DOI: 10.2138/am.2006.1942
© 2006 Mineralogical Society of America
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Comprehensive chemical analyses of a cordierite from Kiranur, South India, and of an ilvaite from Serifos, Greece: Two new microprobe reference samples

Christian Bertoldi1,*, Christoph Hauzenberger2, Nouri-Saïd Rahmoun3, Peter Raase3, Peter Appel3, Dieter Garbe-Schönberg3, Harald Behrens4, Werner Lottermoser1, Georg Amthauer1 and Edgar Dachs1

1 Abteilung für Mineralogie und Materialwissenschaften, Paris Lodron Universität Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria
2 Institut für Erdwissenschaften, Universität Graz, Universitätsplatz 2, 8010 Graz, Austria
3 Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Ludewig-Meyn-Strasse 10, 24118 Kiel, Germany
4 Institut für Mineralogie, Universität Hannover, Callinstraße 3, 30167 Hannover, Germany

Correspondence: * E-mail: christian.bertoldi{at}sbg.ac.at

A cordierite sample (42/IA) from Kiranur, South India, and an ilvaite sample (ISX1) from Serifos, Greece, have been characterized and prepared for use as potential electron microprobe reference samples. By combining different high-precision analytical methods, we determined the major-, minor-, and trace-element composition of these samples and demonstrated their near-stoichiometric composition and high homogeneity at the micrometer level. The chemical composition (working values) of ilvaite ISX1 is (in wt%): SiO2 = 29.68%; Al2O3 = 0.67%; Fe2O3 = 34.72%; FeO = 18.67%; FeOT = 51.52 %; MnO = 0.31%; MgO = 0.22%; CaO = 13.76%; H2O = 2.21%; and of cordierite 42/IA is (in wt%): SiO2 = 49.65; Al2O3 = 33.17%; FeOT = 2.34%; MnO = 0.03%; MgO = 12.44%; Na2O = 0.33%; H2O = 1.21%; CO2 = 0.59%. Aliquots of these samples for use as primary or secondary electron microprobe reference sample can be obtained on request.

Key Words: Cordierite • ilvaite • EMPA • LA-ICP-MS • ICP-OES • microprobe reference sample






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