AM_Hambergite_3 Formula: Be2 B H O4 Name: Hambergite Unit cell: 9.663 12.364 4.44 90.0 90.0 90.0 , V=530.46 Space group: PBCA (61)

Burns P C , Novak M , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1205-1213, Fluorine-hydroxyl variation in hambergite: A crystal-structure study, Note: sample HM4, Locality: Kracovice