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1. (n.) heulandite
a usu. white or transparent zeolite, hydrous calcium-sodium aluminum silicate, occurring as crystals in basic volcanic rocks.
Etymology: (1815–25; after Henry Heuland, English mineralogist)
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| Definition of 'heulandite' |
Princeton's WordNet |
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1. (noun) heulandite
a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium
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| Definition of 'heulandite' |
Webster Dictionary |
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1. (noun) heulandite
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
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Definitions of heulandite 
