Depozite în Continente de Est
  
  
Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
  
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
  
Africa
Cameroon, East Africa, Tanzania, Western Africa
  
Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda
  
Europa
United Kingdom
  
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
  
Alții
nu a fost încă găsite
  
antarctica, insulele hawaii
  
Depozite în Continente de Vest
  
  
America de Nord
Canada, USA
  
Canada, Costa Rica, Panama, USA
  
America de Sud
Bolivia, Brazil, Colombia, Ecuador
  
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador
  
Depozite în Oceania Continent
  
  
Australia
New South Wales, New Zealand, Queensland, Western Australia
  
Central Australia, Western Australia