Depozite în Continente de Est
Asia
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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
South Africa
Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
Europa
Finland, Norway, Portugal
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
Alții
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antarctica, insulele hawaii
Depozite în Continente de Vest
America de Nord
Canada
Canada, Costa Rica, Panama, USA
America de Sud
Brazil
Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay
Depozite în Oceania Continent
Australia
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Central Australia, Western Australia