deposito's in het oosten van continenten
Azië
Japan, Oman
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
Afrika
South Africa
Egypt, Ethiopia, Ghana, South Africa
Europa
France, Germany, Italy, Venezuela
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
anderen
Hawaï-eilanden, Mid-Atlantische Rug
Groenland
deposito's in het westen van continenten
Noord Amerika
Canada, USA
Canada, Cuba, Jamaica, USA
Zuid-Amerika
Not Yet Found
Bolivia, Brazil, Colombia, Ecuador, Paraguay
deposito's in Oceanië continent
Australië
Not Yet Found
New South Wales, New Zealand, Western Australia