Molybdenum "moly"
  Molybdenum (Mo) is a refractory metallic element used principally as an alloying agent in steel, cast iron, and superalloys to enhance hardenability, strength, toughness, and wear and corrosion resistance. Molycorp operates one of the handful of molybdenum mines throughout the world near Questa, New Mexico. Aside from being mined as a primary mineral, it is also recovered as a by-product of copper mining.

More Info:
  • Mineral Commodity Summaries: Molybdenum, 2001 (PDF) (USGS)
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