1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Japan, Oman
Not Yet Found
1.1.2 Afrika
1.1.3 Eropah
France, Germany, Italy, Venezuela
Finland, Germany, Italy, Romania, Sweden, Turkey
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
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru
1.3 deposito di oceania benua
1.3.1 Australia
Not Yet Found
New Zealand, South Australia, Western Australia