Depozite în Continente de Est
Asia
China, India
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
Africa
Morocco, Namibia
Egypt, Ethiopia, Ghana, South Africa
Europa
Austria, Italy, Romania, Spain, Switzerland
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
Depozite în Continente de Vest
America de Nord
Mexico, USA
Canada, Cuba, Jamaica, USA
America de Sud
Brazil, Colombia
Bolivia, Brazil, Colombia, Ecuador, Paraguay
Depozite în Oceania Continent
Australia
New South Wales, Queensland, Yorke Peninsula
New South Wales, New Zealand, Western Australia