Image for Leucite | Leucite at Open Dictionary of English by LearnThat Foundation

Leucite crystals in a rock.
Source: http://en.wiktionary.org/wiki/File:Leucite_in_rock_w-_nepheline_Potassium_aluminum_silicate_Albano_Hills_Italy_1927.jpg
Author: Dave Dyet http://www.shutterstone.com http://www.dyet.com