gadolinite

[ gad-l-uh-nahyt ]

Phonetic (Standard)IPA

noun

a silicate mineral from which the rare-earth metals gadolinium, holmium, and rhenium are extracted.

gadolinite

/ ˈɡædəlɪˌnaɪt /

a rare brown or black mineral consisting of a silicate of iron, beryllium, and yttrium in monoclinic crystalline form. Formula: 2BeO.FeO.Y 2 O 3 .2SiO 2 Also calledytterbite

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1795–1805; named after J. Gadolin (1760–1852), Finnish chemist; -ite ¹

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C19: named after Johan Gadolin (1760–1852), Finnish mineralogist

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In 1797 Ekeberg showed that gadolinite contained another rare earth, which was given the name yttria.

The rare earth metals are found in the minerals gadolinite, samarskite, fergusonite, euxenite and cerite.

The first of the rare earth minerals was discovered in 1794 by J. Gadolin and was named gadolinite from its discoverer.

Ytterbium, i-ter′bi-um, n. an element discovered by Marignac in gadolinite.

It is found in the minerals gadolinite, cerite, samarskite and fergusonite, and is usually obtained from cerite.

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