1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India, Russia
Not Yet Found
1.1.2 Afrika
South Africa
Not Yet Found
1.1.3 Eropah
Germany, Greece, Italy, Scotland, Turkey
Bulgaria
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
belum menemukan
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Queensland
Not Yet Found