deposito's in het oosten van continenten
  
  
Azië
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
  
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey
  
Afrika
Egypt, Ethiopia, Ghana, South Africa
  
Morocco, South Africa
  
Europa
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
  
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela
  
anderen
Groenland
  
Nog niet gevonden
  
deposito's in het westen van continenten
  
  
Noord Amerika
Canada, Cuba, Jamaica, USA
  
Canada, USA
  
Zuid-Amerika
Bolivia, Brazil, Colombia, Ecuador, Paraguay
  
Argentina, Brazil, Colombia, Ecuador, Venezuela
  
deposito's in Oceanië continent
  
  
Australië
New South Wales, New Zealand, Western Australia
  
New Zealand, Western Australia