Depozite în Continente de Est
Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
China, India
Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Morocco, Namibia
Europa
Bulgaria, England, Germany, Norway, Romania, Switzerland
Austria, Italy, Romania, Spain, Switzerland
Depozite în Continente de Vest
America de Nord
USA
Mexico, USA
America de Sud
Brazil, Chile
Brazil, Colombia
Depozite în Oceania Continent
Australia
New Zealand, Queensland, South Australia, Western Australia
New South Wales, Queensland, Yorke Peninsula