gadolinite

gad·o·lin·ite  (gdl--nt)

n.

A dark green or greenish-black silicate mineral, Be₂FeY₂Si₂O₁₀, containing several of the rare earths in combination with iron.

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[After Johan Gadolin (1760-1852), Finnish chemist.]

Thesaurus

Noun

1.

gadolinite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium ytterbite atomic number 4, Be, beryllium, glucinium - a light strong brittle grey toxic bivalent metallic element atomic number 58, Ce, cerium - a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group atomic number 68, Er, erbium - a trivalent metallic element of the rare earth group; occurs with yttrium atomic number 64, gadolinium, Gd - a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group atomic number 67, Ho, holmium - a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds atomic number 65, Tb, terbium - a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite atomic number 70, Yb, ytterbium - a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime atomic number 39, Y, yttrium - a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition