1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Not Yet Found
Japan, Oman
1.1.2 Afrika
Ethiopia, Ghana, Western Africa
South Africa
1.1.3 Eropah
England
France, Germany, Italy, Venezuela
1.1.4 lain
belum menemukan
pulau hawaii, mid-Atlantik ridge
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Argentina, Bolivia, uruguay
belum menemukan
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, South Australia, Western Australia
Not Yet Found