niobite (n)
columbite (n)

n14683859

type n
lex_filenum 27
def a black mineral that is an ore of niobium and tantalum
Outgoing links
Hypernym mineral
Substance meronym niobium, Nb, atomic number 41; tantalum, Ta, atomic number 73
Incoming links
Substance holonym niobium, Nb, atomic number 41; tantalum, Ta, atomic number 73
Hyponym mineral

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