Asia
Japan, Oman
Bangladesh, China, India, Russia
Afrika
South Africa
Ethiopia, Kenya, Morocco, South Africa, Tanzania
Eropah
France, Germany, Italy
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
lain
pulau hawaii, mid-Atlantik ridge
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Amerika Utara
Canada, USA
USA
Amerika Selatan
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Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
deposito di oceania benua
Australia
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New South Wales, New Zealand, Queensland, Victoria, Western Australia