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nepheline |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Nepheline \Neph"e*line\, Nephelite \Neph"e*lite\, n. [gr. ? cloud: cf F. n['e]ph['e]line. Cf {Nebula}.] (Min.) A mineral occuring at Vesuvius, in glassy agonal crystals; also elsewhere, in grayish or greenish masses having a greasy luster, as the variety el[ae]olite. It is a silicate of aluminia, soda, and potash.