deposito di benua timur
Asia
China, India
Japan, Oman
Afrika
Namibia
South Africa
Eropah
Italy, Spain
France, Germany, Italy
lain
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pulau hawaii, mid-Atlantik ridge
deposito di benua Barat
Amerika Utara
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Canada, USA
Amerika Selatan
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deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, Victoria
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