deposito's in het oosten van continenten
Azië
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Not Yet Found
Afrika
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Uganda
Europa
Bulgaria, England, Germany, Norway, Romania, Switzerland
Germany, Hungary, Italy, Spain
anderen
Nog niet gevonden
Groenland, Mid-Atlantische Rug
deposito's in het westen van continenten
Zuid-Amerika
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru
Bolivia, Brazil
deposito's in Oceanië continent
Australië
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia