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• n  a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process

• They have tongue-twisting names (praseodymium, gadolinium, cerium, lanthanum, ytterbium, etc.

• Pr
• atomic number 59

News & Articles

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• WTO rules China violates 'rare earth' mineral trade rules
  In this undated photo released by the U.S. Department of Agriculture are rare-earth oxides, clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium, and gadolinium.
  March 27, 2014 - Mason Valley News