1. Institute of Mineralogy and Petrology, University of Innsbruck, Innrain 52 A-6020 Innsbruck, Austria
2. Department of Earth Sciences, University of Graz, Universitätsplatz 2, A-8010 Graz, Austria
3. Chair of Geology and Economic Geology, Montanuniversität Leoben, Peter-Tunnerstrasse 5, A-8700 Leoben
4. Institute of Geosciences, Mineralogy, Goethe University Frankfurt, Altenhöferallee 1, D-60438 Frankfurt/Main
5. Swedish Museum of Natural History, Frescativägen 40, 11418 Stockholm, Sweden