Min. [f. SODA1 + -LITE.] A vitreous, transparent or translucent silicate of aluminium and sodium containing sodium chloride, usually of a greenish blue color and occurring in certain igneous rocks.
1810. Thomson, in Roy. Soc. Edin. (1812), VI. 387. A Chemical Analysis of Sodalite, a new Mineral from Greenland. Ibid. The mineral to which I have given the name of Sodalite.
1837. Dana, Min., 281. Sodalite includes the white and light green crystallized varieties of this species.
1888. Rutley, Rock-Forming Min., 115. Sodalite mostly occurs in rocks of a syenitic character.
