carnotite :

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carnotite


  • n  a yellow radioactive mineral; an ore of uranium and radium and vanadium

  • Then a radium-bearing ore, carnotite, was discovered in Utah and Colorado.
  • 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.
  • Radium manufactured from carnotite deposits in Colorado costs from $85 to $110 a milligram, or approximately $50,000,000 a pound.

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