Depozite în Continente de Est
Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Africa
Cameroon, East Africa, Tanzania, Western Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Europa
United Kingdom
United Kingdom
Alții
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Depozite în Continente de Vest
America de Nord
Canada, USA
USA
America de Sud
Bolivia, Brazil, Colombia, Ecuador
Colombia
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, Western Australia
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula