Lévyne or lévynite is a group of zeolite minerals, i.e. hydrated silicate minerals. There are two members of the group:Lévyne-Na, the sodium-dominant species (Na2,Ca,K2)Al2Si4O12·6H2O, and Lévyne-Ca the calcium-dominant species (Ca,Na2,K2)Al2Si4O12·6H2O