AM_Dickite_3 Formula: Si2 Al2 O9 H4 Name: Dickite Unit cell: 5.1474 8.9386 14.39 90.0 96.483 90.0 , V=657.86 Space group: C1C1 (9)

Bish D L , Johnston C T , Clays and Clay Minerals , 41 (1993) p.297-304, Rietveld refinement and Fourier-transform infrared spectroscopic, study of the dickite structure at low temperature, Locality: St. Claire, Pennsylvania, USA, Note: Sample at T = 12 K