AM_Telyushenkoite Formula: Si15.66 Al2.04 Zn.3 Be2 Na6.1 Cs.74 Rb.02 K.14 O39 F2 Name: Telyushenkoite Unit cell: 14.377 14.377 4.8786 90.0 90.0 120.0 , V=873.30 Space group: P-3M1 (164)

Sokolova E V , Huminicki D M C , Hawthorne F C , Agakhanov A A , Pautov L A , Grew E S , The Canadian Mineralogist , 40 (2002) p.183-192, The crystal chemistry of telyushenkoite and leifite, A Na6[Be2Al3Si15O39F2],, A = Cs, Na