Lexic.us

Definition of Columbite

1. Noun. A black mineral that is an ore of niobium and tantalum.

Definition of Columbite

1. n. A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first found in New England.

Definition of Columbite

1. Noun. (minerology) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum ¹

¹ Source: wiktionary.com

Definition of Columbite

1. [n -S]

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Lexicographical Neighbors of Columbite

Literary usage of Columbite

Below you will find example usage of this term as found in modern and/or classical literature:

1. Transactions of the American Institute of Mining, Metallurgical and (1889)
"Two notes have already appeared in the Transactions concerning the columbite or tantalite of the Black Hills tin-mines. In vol. xiii., page 232, Prof. ..."

2. Rock Minerals: Their Chemical and Physical Characters and Their by Joseph Paxson Iddings (1911)
"Twinning plane in columbite parallel to (021), usually heart- shaped contact twins ... Color of columbite-tantalite iron black to grayish or brownish black, ..."

3. Laboratory Methods of Inorganic Chemistry by Heinrich Biltz, Wilhelm Biltz (1909)
"Columbium and Tantalum Compounds from columbite. Columbium and tantalum, the most important elements in columbite and tantalite, are separated from one ..."

4. The Non-metallic Minerals: Their Occurrence and Uses by George Perkins Merrill (1910)
"VII. NIOBATES, TANTALATES, AND TUNGSTATES. I. columbite AND TANTALITE. ... I being columbite from Greenland, No. II from Haddam, Connecticut, and Nos. ..."

5. Descriptive Mineralogy by William Shirley Bayley (1917)
"When columbite is decomposed by fusion with KOH and dissolved in HCl and H2SO4, the solution FIG ... 259); from ilmenite by the test for titanium. columbite ..."

6. Mineral Resources of Virginia by Thomas Leonard Watson, Ray Smith Bassler, Heinrich Ries, Roy Jay Holden (1907)
"The mineral columbite, a niobate and tantalate of iron and manganese, occurs in the ... An analysis of the columbite from Amelia county gave Professor Dun- ..."

7. The Annals of Philosophy by Richard Phillips, E W Brayley (1824)
"Though it is now twenty years since Mr. Hatchett made his interesting discovery, the only North American specimen of columbite known until lately, ..."

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