1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India, Russia
Russia, Turkey
1.1.2 Afrika
South Africa
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
1.1.3 Eropah
Germany, Greece, Italy, Scotland, Turkey
Germany, Greece, Iceland, Norway, Poland
1.1.4 lain
tanah penggembalaan, mid-Atlantik ridge
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
Brazil
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Queensland
South Australia, Western Australia