1. Department of Crystallography, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia
2. Kola Science Centre, Fersmana st. 14, 184209 Apatity, Murmansk region, Russia
3. Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
4. Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States