deposito's in het oosten van continenten
Azië
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
Afrika
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Kenya, Morocco, South Africa, Tanzania
Europa
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
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, USA
Canada, Mexico, USA
Zuid-Amerika
Not Yet Found
Bolivia, Brazil
deposito's in Oceanië continent
Australië
Not Yet Found
New South Wales, Queensland, South Australia, Western Australia