Depozite în Continente de Est
Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
India, Saudi Arabia, Singapore, South Korea
Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Ethiopia, Western Africa
Europa
England, France, Germany, Spain, United Kingdom
England, Georgia, Switzerland, United Kingdom
Depozite în Continente de Vest
America de Nord
Canada, USA
Canada
America de Sud
Colombia
Colombia
Depozite în Oceania Continent
Australia
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula
Central Australia, New South Wales, New Zealand, Western Australia