Depozite în Continente de Est
Asia
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China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Africa
Uganda
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Europa
Germany, Hungary, Italy, Spain
Bulgaria, England, Germany, Norway, Romania, Switzerland
Alții
Groenlanda, Dorsalei-atlantica
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Depozite în Continente de Vest
America de Nord
USA
USA
America de Sud
Bolivia, Brazil
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia