AM_Dickite_2
Formula: Si2 Al2 O9 H4
Name: Dickite
Unit cell: 5.082 8.757 13.771 90.0 89.6 90.0 , V=612.84
Space group: C1C1 (9)

Dera P , Prewitt C T , Japel S , Bish D L , Johnston C T , American Mineralogist , 88 (2003) p.1428-1435, Pressure-controlled polytypism in hydrous layered materials, Sample: High pressure dickite at P = 4.1 GPa