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A black mineral that is an ore of niobium and tantalum
Answer for the clue "A black mineral that is an ore of niobium and tantalum ", 7 letters:
niobite
Word definitions for niobite in dictionaries
WordNet
Word definitions in WordNet
n. a black mineral that is an ore of niobium and tantalum [syn: columbite ]
Wiktionary
Word definitions in Wiktionary
n. The mineral columbite.
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
niobite \ni"o*bite\, n. (Min.) Same as Columbite .