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columbite
[ kuh-luhm-bahyt ]
noun
- a black, crystalline mineral, iron niobate, (Fe, Mn)Nb 2 O 6 , the principal ore of niobium, an end member of a series of solid solutions in which manganese and tantalum combine to form tantalite.
columbite
/ °ìəˈ±ôÊŒ³¾²ú²¹Éª³Ù /
noun
- a black mineral consisting of a niobium oxide of iron and manganese in orthorhombic crystalline form: occurs in coarse granite, often with tantalite, and is an ore of niobium. Formula: (Fe, Mn)(Nb) 2 O 6 Also calledniobite
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˜yÐÄvlog History and Origins
Origin of columbite1
First recorded in 1795–1805; columb(ium) + -ite 1
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˜yÐÄvlog History and Origins
Origin of columbite1
C19: from columbium + -ite 1
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Example Sentences
Examples have not been reviewed.
The region has a history of tin and columbite mining - abandoned mines mark the landscape.
From
These elements occur in the minerals columbite and tantalite, and their compounds became known in the early part of the 19th century by the labours of C. Hatchett, A.G.
From
They are probably present in the form of columbite, a niobate of iron and manganese; and tantalite, a tantalate of the same metals.
From
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