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

---

Etymology

Origin of carnotite

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

Example Sentences

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

In 1923, V. I. Popov reported one at Uigar-sai that he said compared favorably to "many carnotite sites in the U.S.A."

From Time Magazine Archive

Later, the area became a major producer of vanadium, also from carnotite, a metal used to harden steel.

From Time Magazine Archive

Then a radium-bearing ore, carnotite, was discovered in Utah and Colorado.

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)