1. Department of Archaeology, Archaeometry Research Group; Ghent University; Sint-Pietersnieuwstraat 35 B-9000 Ghent Belgium
2. HERCULES Laboratory; University of Évora; Palácio do Vimioso, Largo Marquês de Marialva 8 7000-554 Évora Portugal
3. Department of Analytical Chemistry, Raman Spectroscopy Research Group; Ghent University; S-12, Krijgslaan 281 B-9000 Ghent Belgium
4. Department of Languages and Cultures, BantUGent - UGent Centre for Bantu Studies; Ghent University; Blandijnberg 2 9000 Ghent Belgium
5. Material Culture Research; Parks Canada Ottawa Ontario Canada
6. Department of Chemistry, School of Science and Technology; University of Évora; Colégio Luís António Verney, R. Romão Ramalho, 59 7000-671 Évora Portugal
7. Department of Geosciences, School of Science and Technology; University of Évora; Colégio Luís António Verney, R. Romão Ramalho, 59 7000-671 Évora Portugal