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nouna dark mineral consisting of oxides of yttrium and erbium and tantalum and other mineralstype of:
Definition that contains fergusonite
- ta a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
- tantalum a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
- atomic number 73 a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite