1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Japan, Oman
Not Yet Found
1.1.2 Afrika
South Africa
Ethiopia, Ghana, Western Africa
1.1.3 Eropah
France, Germany, Italy, Venezuela
England
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, uruguay
1.3 deposito di oceania benua
1.3.1 Australia
Not Yet Found
Central Australia, South Australia, Western Australia