The compound didymium was discovered by chemist Carl Mosander in 1841. It took a further 44 years before the elemental twins, praseodymium and neodymium, were finally separated.


  • Welder and glass blower goggles made with praseodymium and neodymium oxides protect the eyes from yellow flare and UV light.

  • Vibrant yellow ceramic tiles and dinnerware, popular in the Mediterranean region, are the result of combining praseodymium and zirconium oxides.

  • Praseodymium oxide is a catalyst to make the most widely used plastic, polyethylene, for soda bottles, bubble wrap, food plastic wrap, sandwich bags and milk cartons.

  • Used as an alloy to create strong metals for use in aircraft engines.

hastings fighter jet


Interesting Facts

  • In 1841, Carl Mosander mistakenly thought that didymium oxide, a natural mixture of praseodymium and neodymium, was a new element. His discovery was even given the symbol Di in Mendeleev's first edition of the periodic table in 1869.

  • The primary use of praseodymium is to combine it with neodymium magnets to increase their availability to supply growing demand for high-tech applications.

  • Within a magnetic field, Praseodymium mixed with nickel PrNi5 cools to within one thousandth of a degree of absolute zero, -273.15 °C, the point where every molecule stops moving.



Large resources of praseodymium are contained in LREE-enriched minerals. Praseodymium occurs in the Earth's crust at an average concentration of 8 parts per million(ppm). The primary source of praseodymium is from carbonatites and the LREE-mineral bastnaesite. Bastnaesite deposits in China and the United States constitute the largest percentage of the world's rare-earth economic resources. Praseodymium is also a major constituent in the LREE-mineral monazite, as at Yangibana.

Praseodymium is the second largest source of value at Hastings’ Yangibana Project where it averages around 750ppm - far exceeding the average concentration in the earth’s crust.

If you have questions about rare eaths or our Yangibana Project, don’t hesitate to call Charles Tan at +61 457 853 839 or write to