Gadolinite

n.

1.

(Min.) A mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of yttrium, cerium, and iron.

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 Synonyms: ytterbite

atomic number 39, atomic number 4, atomic number 58, atomic number 64, atomic number 65, atomic number 67, atomic number 68, atomic number 70, Be, beryllium, Ce, cerium, Er, erbium, gadolinium, Gd, glucinium, Ho, holmium, mineral, Tb, terbium, Y, Yb, ytterbite, ytterbium, yttrium