Depozite în Continente de Est
Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
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
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
Europa
Bulgaria, England, Germany, Norway, Romania, Switzerland
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
Alții
-
antarctica, insulele hawaii
Depozite în Continente de Vest
America de Nord
USA
Canada, Costa Rica, Panama, USA
America de Sud
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru
Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
Central Australia, Western Australia