AM_Brewsterite-Sr_3 Formula: Sr.58 Ba.3 Ca.14 Al1.98 Si6.02 O20.9 H8 Name: Brewsterite-Sr Unit cell: 6.772 17.51 7.744 90.0 94.3 90.0 , V=915.68 Space group: P121/M1 (11)

Perrotta A J , Smith J V , Acta Crystallographica , 17 (1964) p.857-862, The crystal structure of brewsterite, (Sr,Ba,Ca)(Al2Si6O16)*5H2O, Locality: Strontian, Argyll, Scotland, Note: zeolite