Depozite în Continente de Est
Asia
India
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
Africa
South Africa, Tanzania
Cameroon, East Africa, Tanzania, Western Africa
Europa
Germany, Greece, Italy, Scotland, Turkey
United Kingdom
Alții
antarctica, Groenlanda
-
Depozite în Continente de Vest
America de Nord
Canada, USA
Canada, USA
America de Sud
Argentina, Brazil, Colombia, Venezuela
Bolivia, Brazil, Colombia, Ecuador
Depozite în Oceania Continent
Australia
Central Australia, New Zealand, Queensland, Western Australia
New South Wales, New Zealand, Queensland, Western Australia