1. GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam, Germany
2. Department of Mineralogy, Technical University Berlin, Ackerstrasse 71-76, Berlin, Germany
3. Geological Department, Perm State University, Bukireva 15, Perm, Russia
4. Sobolev Institute of Geology and Mineralogy SB RAS, Ac. Koptyuga Str., 3, Novosibirsk, Russia
5. The Vernadsky Institute of Geochemistry and Analytical Chemistry RAS, Kosygin Str. 19, Moscow, Russia
6. Department of Geological Sciences, University of Cape Town, Private Bag Rondebosch, Cape Town, South Africa
7. Museum für Naturkunde Berlin, Invalidenstrasse 43, Berlin, Germany
8. Free University Berlin, Department of Earth Sciences, Malteserstr. 74-100 / Building A, Berlin, Germany