Heulandite Chemical: CaAl2Si7O18-6H2O. Clades: Zeolite family; Tectosilicates; Silicate minerals; Lapidae. rom Related postsSyngonanthus umbellatusMarch 10, 2019Ornithogalum candicansMarch 10, 2019Erbium metallicumMay 15, 2020 Previous postNatroliteNext postStilbite