AM_Willhendersonite Formula: K1.14 Ca.982 Al3 Si3 O17.11 H14 Name: Willhendersonite Unit cell: 9.248 9.259 9.533 92.313 92.761 89.981 , V=814.67 Space group: P-1 (2)

Fischer R X , Kahlenberg V , Lengauer C L , Tillmanns E , American Mineralogist , 93 (2008) p.1317-1325, Thermal behavior and structural transformation in the chabazite-type zeolite, willhendersonite, KCaAl3Si3O12*5H2O, Locality: Mayen, Eifel district, Germany, Note: Room temperature