deposito di benua timur
Asia
Japan, Oman
-
Afrika
South Africa
-
Eropah
France, Germany, Italy
Bulgaria, England, Germany, Norway, Romania, Switzerland
lain
pulau hawaii, mid-Atlantik ridge
-
deposito di benua Barat
Amerika Utara
Canada, USA
USA
Amerika Selatan
-
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