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