ALL meanings of coltan
C c - noun coltan a metallic ore found esp in the E Congo, consisting of columbite and tantalite (a source of the element tantalum) 3
- noun coltan A dull metallic mineral composed of columbite and tantalite, and refined to produce tantalum. 1
- noun coltan A metallic ore from which the elements niobium and tantalum are extracted. 0
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