deposito's in het oosten van continenten
Azië
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
Afrika
South Africa, Western Africa
Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
Europa
United Kingdom
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
anderen
Nog niet gevonden
Antarctica, Hawaï-eilanden
deposito's in het westen van continenten
Noord Amerika
Canada
Canada, Costa Rica, Panama, USA
Zuid-Amerika
Brazil, Colombia, Paraguay
Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay
deposito's in Oceanië continent
Australië
Central Australia, Western Australia
Central Australia, Western Australia