AM_Hyalophane_2
Formula: (K.43 Ba.39 Na.17 Ca.01) (Si2.58 Al1.42) O8
Name: Hyalophane
Unit cell: 8.556 13.045 7.189 90.0 115.63 90.0 , V=723.44
Space group: C12/M1 (12)

De Pieri R , Quareni S , Hall K M , Acta Crystallographica, Section B , 33 (1977) p.3073-3076, Refinement of the structures of low and high hyalophanes, Sample: High hyalophane