a white or yellow zeolite mineral consisting of hydrated calcium sodium aluminium silicate, often in the form of sheaves of monoclinic crystals. Formula: (Na2Ca)Al2Si7O18.7H2O
Word origin
C19: from Greek stilbos glittering (from stilbein to shine) + -ite1
stilbite in American English
(ˈstɪlˌbaɪt)
noun
a usually white, semihard, monoclinic zeolite, NaCa2Al5Si13O36·14H2O, usually found in sheaflike crystals; hydrous sodium calcium aluminum silicate