Johan Gadolin



  He was the professor of chemistry at the University of Åbo, Finland, who discovered yttria. He conducted a thorough study of the rare earth minerals from Ytterby, Sweden.



  1. Photographs from The Ytterby Mine in Ytterby, Sweden

  2. Map to get to Resarö Island from Stockholm

  3. Map to get to the Ytterby Mine on Resarö Island

  4. Map of the Ytterby Mine area

  5. Photographs of Turku, Finland

  6. Map of City of Turku, Finland

  7. Map of City of Turku, Finland (expanded)


Copyright 2018, Dr. James L. Marshall and Virginia R. Marshall
All Rights Reserved.