1. Division of Applied Mineralogy, Department of Geosciences Eberhard Karls University of Tübingen Wilhelmstraße 56 72074 Tübingen Germany
2. Department of Prehistory and Quaternary Ecology Eberhard Karls University of Tübingen Schloss Hohentübingen 72070 Tübingen Germany
3. Applications Laboratory NETZSCH-Gerätebau GmbH Wittelsbacherstraße 42 95100 Selb Germany