AM_BaCuSi2O6 Formula: Ba Cu Si2 O6 Name: BaCuSi2O6 Unit cell: 7.042 7.042 11.133 90.0 90.0 90.0 , V=552.08 Space group: I-4M2 (119)

Finger L W , Hazen R M , Hemley R J , American Mineralogist , 74 (1989) p.952-955, BaCuSi2O6: a new cyclosilicate with four-membered tetrahedral rings