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A mineral occuring at Vesuvius, in glassy agonal crystals; also elsewhere, in grayish or greenish masses having a greasy luster, as the variety elaeolite. It is a silicate of aluminia, soda, and potash.

Origin: gr. Cloud: cf. F. Nepheline. Cf. Nebula.

(01 Mar 1998)

nep, nepa, nepenthes, neper, nepeta < Prev | Next > nephelodometer, nephelometer

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