yttrotantalite

yttrotantalite

[‚i·trə′tant·əl‚īt]
(mineralogy)
(Y,U,Fe)(Ta,Nb)O4 A black or brown, orthorhombic mineral consisting of an oxide of iron, yttrium, uranium, columbium, and tantalum; occurs in prismatic and tabular form.
References in periodicals archive ?
in 1849 he sent such things as yttrotantalite (then only known from Sweden) and euchroite (only known from Libethen, Hungary), and in 1852 Wright asked Jefferis if he wanted Norwegian material: "I have purchased 40 boxes.
The Cooglegong area, possibly the Trigg Hill pegmatites, is the type locality for formanite and tanteuxenite and is also known for its yttrotantalite, fergusonite and gadolinite.