Asia
Japan, Oman
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
Afrika
South Africa
South Africa, Western Africa
Eropah
France, Germany, Italy, Venezuela
United Kingdom
lain
pulau hawaii, mid-Atlantik ridge
belum menemukan
Amerika Utara
Canada, USA
Canada
Amerika Selatan
belum menemukan
Brazil, Kolumbia, Paraguai
deposito di oceania benua
Australia
Not Yet Found
Central Australia, Western Australia