AM_Bellbergite
Formula: K Sr Ca3 (Al9 Si9) O51 H33.388
Name: Bellbergite
Unit cell: 13.224 13.224 15.988 90.0 90.0 120.0 , V=2421.31
Space group: P63/MMC (194)

Ruedinger B , Tillmanns E , Hentschel G , Mineralogy and Petrology , 48 (1993) p.147-152, Bellbergite - a new mineral with the zeolite structure type EAB