What is yttrocolumbite?

Answer 1

Yttrocolumbite is a brown or black tantalate of uranium, yttrium, and calcium, also known as yttrotantalite.

Answer 2

Yttrocolumbite is a mineral that is a member of the columbite-tantalite mineral group. It is a tantalum-rich variety of columbite and contains the element yttrium. Yttrocolumbite is typically found in granite pegmatites and is of interest due to its tantalum content.