Thŏm'son-īte, n.

(tŏm/sun-ĭt, 49), n. [From Thomson, of Glasgow.] (Min.) A mineral of the zeolite family, occurring generally in masses of a radiated structure, and glassy or vitreous luster. It consists of silica, alumina, and lime, with some soda, and a certain percentage of water.

The mineral Comptonite is identical with this species. Dana.