Institution: | 1. Institut für Geowissenschaften, Universit?t Kiel, 24118 Kiel, Germany;2. Nizhny Novgorod State University, 603950 Nizhny Novgorod, Russia;3. Department of Crystallography, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia, Fax: (+43)?512‐507‐2926 |