Depozite în Continente de Est
Asia
Russia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Africa
Angola, Botswana, Cameroon, Ethiopia, South Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Europa
England, Hungary, Iceland, United Kingdom
England, France, Germany, Spain, United Kingdom
Alții
antarctica
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Depozite în Continente de Vest
America de Nord
Canada, USA
Canada, USA
America de Sud
Argentina, Colombia, Ecuador
Colombia
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, South Australia, Western Australia
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula