n.a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium
英汉双解大词典
heulandite/ˈhjuːlənˌdaɪt/
1.
N(名词)
a white, grey, red, or brown zeolite mineral that consists essentially of hydrated calcium aluminium silicate in the form of elongated tabular crystals. Formula: CaAl2Si7O18.6H2O 片沸石