Min. Obs. [f. Mt. Somma near Naples + -ITE1 2 b.] Nephelite.

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1805.  R. Jameson, Min., II. 565. Sommite…. Its colour is greyish-white.

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1823.  W. Phillips, Min. (ed. 3), 125. The Sommite usually occurs in grains, or in small regular hexahedral prisms.

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1837.  Dana, Min., 291. Nepheline, Spatum hexagonum.… Sommite.

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