Depozite în Continente de Est
Asia
India
Bangladesh, China, India, Russia
Africa
South Africa, Tanzania
Ethiopia, Kenya, Morocco, South Africa, Tanzania
Europa
Germany, Greece, Italy, Scotland, Turkey
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Alții
antarctica, Groenlanda
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Depozite în Continente de Vest
America de Nord
Canada, USA
USA
America de Sud
Argentina, Brazil, Colombia, Venezuela
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Depozite în Oceania Continent
Australia
Central Australia, New Zealand, Queensland, Western Australia
New South Wales, New Zealand, Queensland, Victoria, Western Australia