Asia
Japan, Oman
Not Yet Found
Afrika
South Africa
Western Africa
Eropah
France, Germany, Italy, Venezuela
United Kingdom
lain
pulau hawaii, mid-Atlantik ridge
belum menemukan
Amerika Utara
Canada, USA
Not Available
Amerika Selatan
belum menemukan
Brazil, Kolumbia, Ekuador
deposito di oceania benua
Australia
Not Yet Found
Central Australia, Western Australia