Asia
Japan, Oman
Russia, Turkey
Afrika
South Africa
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
Eropah
France, Germany, Italy, Venezuela
Germany, Greece, Iceland, Norway, Poland
lain
pulau hawaii, mid-Atlantik ridge
belum menemukan
Amerika Utara
Canada, USA
Canada, USA
Amerika Selatan
belum menemukan
Brazil
deposito di oceania benua
Australia
Not Yet Found
South Australia, Western Australia