Depozite în Continente de Est
Asia
Russia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
Africa
Angola, Botswana, Cameroon, Ethiopia, South Africa
Cameroon, East Africa, Tanzania, Western Africa
Europa
England, Hungary, Iceland, United Kingdom
United Kingdom
Alții
antarctica, Groenlanda
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Depozite în Continente de Vest
America de Nord
Canada, Mexico, USA
Canada, USA
America de Sud
Argentina, Colombia, Ecuador
Bolivia, Brazil, Colombia, Ecuador
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New South Wales, New Zealand, Queensland, Western Australia