Asia
Japan, Oman
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Afrika
South Africa
Angola, Egypt, Ethiopia, Madagascar, Namibia, Nigeria, South Africa
Eropah
France, Germany, Italy
Bulgaria, England, Germany, Norway, Romania, Switzerland
lain
pulau hawaii, mid-Atlantik ridge
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Amerika Utara
Canada, USA
USA
Amerika Selatan
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Argentina, Bolivia, Brazil, Chili, Kolumbia, Ekuador, peru
deposito di oceania benua
Australia
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New South Wales, New Zealand, Queensland, South Australia, Western Australia