Consists of silicates of iron and beryllium and cerium and yttrium and erbium

• A mineral that is a source of rare earths

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Gadolinite \Gad"o*lin*ite\, n. [Named after Gadolin, a Russian chemist.] (Min.) A mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of yttrium, cerium, and iron.

Wiktionary Word definitions in Wiktionary
n. (context mineral English) A dark, vitreous mineral that is a complex mixture of silicates of cerium, lanthanum, neodymium, yttrium, beryllium, and iron, with the chemical formula (cerium,lanthanum,neodymium,yttrium) 2 ironberyllium 2 silicon 2 oxygen ...

WordNet Word definitions in WordNet
n. a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium [syn: ytterbite ]

Wikipedia Word definitions in Wikipedia
Gadolinite , sometimes known as Ytterbite , is a silicate mineral consisting principally of the silicates of cerium , lanthanum , neodymium , yttrium , beryllium , and iron with the formula (Ce,La,Nd,Y)FeBeSiO. It is called gadolinite-(Ce) or gadolinite-(Y), ...