1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Japan, Oman
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
1.1.2 Afrika
South Africa
South Africa, Western Africa
1.1.3 Eropah
France, Germany, Italy, Venezuela
United Kingdom
1.1.4 lain
pulau hawaii, mid-Atlantik ridge
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
belum menemukan
Brazil, Kolumbia, Paraguai
1.3 deposito di oceania benua
1.3.1 Australia
Not Yet Found
Central Australia, Western Australia