Asia
Not Yet Found
Japan, Oman
Afrika
Egypt
South Africa
Eropah
Finland, Germany, Italy, Romania, Sweden, Turkey
France, Germany, Italy, Venezuela
lain
belum menemukan
pulau hawaii, mid-Atlantik ridge
Amerika Utara
USA
Canada, USA
Amerika Selatan
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru
belum menemukan
deposito di oceania benua
Australia
New Zealand, South Australia, Western Australia
Not Yet Found