deposito's in het oosten van continenten
Azië
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
China, India
Afrika
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Morocco, Namibia
Europa
Bulgaria, England, Germany, Norway, Romania, Switzerland
Austria, Italy, Romania, Spain, Switzerland
deposito's in het westen van continenten
Noord Amerika
USA
Mexico, USA
Zuid-Amerika
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru
Brazil, Colombia
deposito's in Oceanië continent
Australië
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New South Wales, Queensland, Yorke Peninsula