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