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