Sodalite
Pronunciation : So"da*lite
Part of Speech : n.
Etymology : [Soda + -lite: cf. F. sodalithe.] (Min.)
Definition : Defn: A mineral of a white to blue or gray color, occuring commonly in dodecahedrons, also massive. It is a silicate of alumina and soda with some chlorine.
Source : Webster's Unabridged Dictionary, 1913