AM_Friedrichbeckeite Formula: K.926 Na.772 Mg2.793 Mn.386 Be1.821 Si12 O30 Name: Friedrichbeckeite Unit cell: 9.97 9.97 14.13 90.0 90.0 120.0 , V=1216.36 Space group: P6/MCC (192)

Lengauer C L , Hrauda N , Kolitsch U , Krickl R , Tillmanns E , Mineralogy and Petrology , 96 (2009) p.221-232