Depozite în Continente de Est
Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
India
Africa
Cameroon, East Africa, Tanzania, Western Africa
East Africa, Ethiopia, Madagascar, Morocco, Mozambique
Europa
United Kingdom
Albania, Romania, Scotland, United Kingdom
Depozite în Continente de Vest
America de Nord
Canada, USA
USA
America de Sud
Bolivia, Brazil, Colombia, Ecuador
Brazil, Colombia, Venezuela
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, Western Australia
Central Australia, Western Australia