deposito's in het oosten van continenten
  
  
Azië
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
  
Bangladesh, China, India, Russia
  
Afrika
Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda
  
Ethiopia, Kenya, Morocco, South Africa, Tanzania
  
Europa
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
  
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
  
anderen
Antarctica, Hawaï-eilanden
  
Nog niet gevonden
  
deposito's in het westen van continenten
  
  
Noord Amerika
Canada, Costa Rica, Panama, USA
  
USA
  
Zuid-Amerika
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador
  
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
deposito's in Oceanië continent
  
  
Australië
Central Australia, Western Australia
  
New South Wales, New Zealand, Queensland, Victoria, Western Australia