1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India, Russia
China, India
1.1.2 Afrika
South Africa
Morocco, Namibia
1.1.3 Eropah
Germany, Greece, Italy, Scotland, Turkey
Austria, Italy, Romania, Spain, Switzerland
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, Kolumbia
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Queensland
New South Wales, Queensland, Yorke Peninsula