1. Institute for Mineralogy
2. Crystallography and Materials Science
3. Faculty of Chemistry and Mineralogy
4. Leipzig University
5. 04275 Leipzig
6. Institute of Materials Science
7. TU Bergakademie Freiberg
8. 09599 Freiberg
9. Germany
10. Department of Materials Science and Engineering
11. Northwestern University
12. Evanston
13. USA