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Definition of Heulandite
1. Noun. A group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium.
Definition of Heulandite
1. n. A mineral of the Zeolite family, often occurring in amygdaloid, in foliated masses, and also in monoclinic crystals with pearly luster on the cleavage face. It is a hydrous silicate of alumina and lime.
Definition of Heulandite
1. Noun. (minerology) A common mineral of the zeolite group with monoclinic crystals, the most usual form being heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O. ¹
¹ Source: wiktionary.com
Definition of Heulandite
1. [n -S]
Medical Definition of Heulandite
1.