Natrolite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Natrolite \Na"tro*lite\ (?; 277), n. [Natron + -lite: cf. F.
     natrolithe.] (Min.)
     A zeolite occuring in groups of glassy acicular crystals, and
     in masses which often have a radiated structure. It is a
     hydrous silicate of alumina and soda.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  natrolite
       n : a group of minerals of the zeolite family consisting of a
           hydrous silicate of sodium and aluminum