Min. Obs. [f. Mt. Somma near Naples + -ITE1 2 b.] Nephelite.
1805. R. Jameson, Min., II. 565. Sommite . Its colour is greyish-white.
1823. W. Phillips, Min. (ed. 3), 125. The Sommite usually occurs in grains, or in small regular hexahedral prisms.
1837. Dana, Min., 291. Nepheline, Spatum hexagonum. Sommite.