Heulandite
[hju:lәndait]
Definition
(noun.) a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium.
Editor: Matt--From WordNet
Definition
(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.
Checker: Melanie
Definition
n. a mineral of the zeolite group—from H. Heuland an English mineralogist.
Checker: Reginald