a white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAl 2 Si 7 O 18 ⋅6H 2 O, occurring in basic volcanic rocks in the form of crystals with a pearly luster.
Origin of heulandite
1815-1825
1815-25; named after Henry Heuland, 19th-century English mineral collector; see -ite1
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
Word Origin
C19: named after H. Heuland, 19th-century English mineral collector; see -ite1
