hydrated sodium and calcium aluminosilicate mineral in the zeolite family. It forms piezoelectric crystals of monoclinic symmetry and platy habit; ... [1 related articles] Found on http://www.britannica.com/eb/a-z/e/37
Ep`i·stil'bite noun [ Prefix epi- + stilbite .] (Min.) A crystallized, transparent mineral of the Zeolite family. It is a hydrous silicate of alumina and lime. Found on http://www.encyclo.co.uk/webster/E/57