التركية - الإنجليزية
تعريف kolumbit في التركية الإنجليزية القاموس.
- columbite
- It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; first found in New England
- A mineral of a black color, submetallic luster, and high specific specific gravity
- A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum