Advertisement
Advertisement
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
/ kəˈlʌmbaɪt /
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
Discover More
Word History and Origins
Origin of columbite1
First recorded in 1795–1805; columb(ium) + -ite 1
Discover More
Word History and Origins
Origin of columbite1
C19: from columbium + -ite 1
Discover More
Example Sentences
Columbium pentoxide (columbic acid), Cb2O5, is obtained from columbite, after the removal of tantalum (see above).
From Project Gutenberg
Advertisement
Word of the Day
[tawr-choo-uhs ]
Meaning and examplesStart each day with the Word of the Day in your inbox!
By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy Policies.
Advertisement
Advertisement
Advertisement
Browse