1. Competence Center Archaeometry - Baden-Wuerttemberg (CCA-BW), Applied Mineralogy, Department of Geosciences; University of Tübingen; Tübingen Germany
2. Institute for Archaeological Sciences; University of Tübingen; Tübingen Germany
3. School of Anthropology; University of Arizona; Tucson USA
4. Senckenberg Centre for Human Evolution and Paleoenvironment; University of Tübingen; Tübingen Germany