1. Institute of Geological Sciences, University of Bern, Baltzerstrasse 1+3, 3012 Bern, Switzerland
2. The Rossendorf Beamline at the European Synchrotron Radiation Facility (ESRF), Avenue des Martyrs 71, 38043 Grenoble, France
3. Institute of Resource Ecology, Bautzner Landstrasse 400, 01328 Dresden, Germany
4. Paul Scherrer Institut, Forschungstrasse 111, 5232 Villingen PSI, Switzerland