heulandite

2 definitions found

heulandite - Collaborative International Dictionary of English v.0.48 :

  Heulandite \Heu"land*ite\, n. [After Heuland, an English
     mineralogist.] (Min.)
     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.
     [1913 Webster]

heulandite - WordNet (r) 2.1 (2005) :

  heulandite
      n 1: a group of minerals of the zeolite family consisting of a
           hydrous aluminum silicate of sodium and calcium