deposito's in het oosten van continenten
Azië
Not Yet Found
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
Afrika
Not Yet Found
Kenya, Morocco, South Africa, Tanzania
Europa
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
anderen
Nog niet gevonden
Groenland, Mid-Atlantische Rug
deposito's in het westen van continenten
Noord Amerika
Canada
Canada, Mexico, USA
Zuid-Amerika
Bolivia, Colombia
Bolivia, Brazil
deposito's in Oceanië continent
Australië
Central Australia, South Australia, Western Australia
New South Wales, Queensland, South Australia, Western Australia