Category:Nepheline

Neph"e*line, neph"e*lite, n. Etym: [gr. néphéline. Cf. Nebula.] (min.)

Defn: a mineral occuring at vesuvius, in glassy agonal crystals; also Elsewhere, in grayish or greenish masses having a greasy luster, as The variety elæolite. It is a silicate of aluminia, soda, and potash.