carnotite

American  

[kahr-nuh-tahyt] / ˈkɑr nəˌtaɪt /

noun

Mineralogy.

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

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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

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Etymology

Origin of carnotite

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

Example Sentences

Meanwhile, Belgian prospectors had discovered veins of pitchblende in the Belgian Congo no less than 20 times richer than the U. S. carnotite.

From Time Magazine Archive

Eager to develop domestic sources of radium, he studied mining, learned that radium could be obtained from carnotite, developed a reduction plant at Denver to make domestic radium available.

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

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

"And in this case, powdered carnotite was used in the fields, and chunks were put in the mine, to make victims think uranium was present," Rick added.

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