Depozite în Continente de Est
Asia
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Africa
Egypt, Ethiopia, Ghana, South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Europa
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
Alții
Groenlanda
nu a fost încă găsite
Depozite în Continente de Vest
America de Nord
Canada, Cuba, Jamaica, USA
Canada, USA
America de Sud
Bolivia, Brazil, Colombia, Ecuador, Paraguay
Not Yet Found
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Western Australia
Not Yet Found