Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)(Nb, Ta)2O6], is a black mineral group that is an ore of niobium and tantalum. It has a submetallic luster and a high density and is a niobate of iron and manganese, containing tantalate of iron.
| Chivine Resources, Inc. | |
|---|---|
| Product Category | Inorganic Chemicals and Compounds |
| Product Number | Columbite |
| Type | Other; BASE METALS & MINOR METALS ORES |
