deposito's in het oosten van continenten
Azië
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China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Afrika
Uganda
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Europa
Germany, Hungary, Italy, Spain
Bulgaria, England, Germany, Norway, Romania, Switzerland
anderen
Groenland, Mid-Atlantische Rug
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deposito's in het westen van continenten
Noord Amerika
USA
USA
Zuid-Amerika
Bolivia, Brazil
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru
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