14683859-n 'a black mineral that is an ore of niobium and tantalum';
 
Czech niobit
Chinese (simplified) 铌铁矿
English niobite , columbite
Italian columbite
Definitions
English
a black mineral that is an ore of niobium and tantalum
Japanese
ニオブとタンタルの鉱石である黒い鉱物
Relations
Hypernym: mineral
Meronym–Substance: niobium tantalum
Semantic Field: substancen
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