AM_Cymrite-K
Formula: K (Al Si3) O9 H2
Name: Cymrite-K
Unit cell: 5.3348 5.3348 7.7057 90.0 90.0 120.0 , V=189.92
Space group: P6/MMM (191)

Fasshauer D W , Chatterjee N D , Marler B , Physics and Chemistry of Minerals , 24 (1997) p.455-462, Synthesis, structure, thermodynamic properties, and stability, relations of K-cymrite, K[AlSi3O8].H2O