What is "euxenite"

Euxenite \Eux"e*nite\, n. [Gr. ? hospitable. So named because it contains a number of rare elements.] (Min.) A brownish black mineral with a metallic luster, found in Norway. It contains niobium, titanium, yttrium, and uranium, with some other metals.

n. (context mineral English) A dark brown lustrous mineral that is a mixed oxide of cerium, erbium, titanium, uranium, yttrium and other more common metals, with the chemical formula (yttrium,calcium,cerium,uranium,thorium)(niobium,tantalum,titanium)₂oxygen₆.

Euxenite or euxenite-(Y) (a correct mineralogical name) is a brownish black mineral with a metallic luster.