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Meaning of heulandite

heu•land•ite

Pronunciation: (hy'lun-dīt"), [key]
— n.
  1. a white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAlSiO&multiplydot;6HO, occurring in basic volcanic rocks in the form of crystals with a pearly luster.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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