コロンバイト
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Meanings
1
columbite
A mineral combining niobite and tantalite; a technical term used in mineralogy and geology.
Columbite is an important ore of niobium and tantalum.
columbite
A mineral combining niobite and tantalite; a technical term used in mineralogy and geology.
Columbite is an important ore of niobium and tantalum.