1. European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
2. Univ. Grenoble Alpes, CNRS, ISTerre, 38058 Grenoble, France
3. Univ. Lorraine, ENSG, CNRS, GeoRessources Lab, 54000 Nancy, France
4. Univ. Lorraine, CNRS, GeoRessources, 54000 Nancy, France