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nouna hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
Similar:
type of:
Definition that contains tantalum
- columbite a black mineral that is an ore of niobium and tantalum
- fergusonite a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
- tantalite a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum
- niobite a black mineral that is an ore of niobium and tantalum