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carnotite

American  
[kahr-nuh-tahyt] / ˈkɑr nəˌtaɪt /

noun

Mineralogy.
  1. a yellow, earthy, hydrous potassium uranium vanadate: an ore of uranium.


carnotite British  
/ ˈkɑːnəˌtaɪt /

noun

  1. a radioactive yellow mineral consisting of hydrated uranium potassium vanadate: occurs in sedimentary rocks and is a source of uranium, radium, and vanadium. Formula: K 2 (UO 2 ) 2 (VO 4 ) 2 .3H 2 O

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of carnotite

1895–1900; named after A. Carnot (died 1920), French mining official; see -ite 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The deposits of uranium-bearing carnotite ores have long been known; Indians once painted themselves with brilliant reds and yellows extracted from the carnotite rock.

From Time Magazine Archive

Decade ago Colorado and Utah carnotite deposits had made the U. S. the world's largest radium producer but richer ore was found in the Belgian Congo and Radium Beige soon had established a monopoly.

From Time Magazine Archive

In the carnotite ore of Utah and Colorado ten years ago he discovered and refined the first U. S. radium.

From Time Magazine Archive

The price fell first when the carnotite mines of Colorado and again when the Belgian Congo ceased to be the only profitable sources of radium.

From Time Magazine Archive

Pitchblende is the best, but carnotite, which is a gray rock with yellowish streaks, is also good ore.

From The Blue Ghost Mystery by Goodwin, Harold L. (Harold Leland)

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