1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India
India, Russia
1.1.2 Afrika
Morocco, Namibia
South Africa
1.1.3 Eropah
Austria, Italy, Romania, Spain, Switzerland
Germany, Greece, Italy, Scotland, Turkey
1.1.4 lain
belum menemukan
tanah penggembalaan, mid-Atlantik ridge
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Brazil, Kolumbia
Bolivia, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, Queensland, Yorke Peninsula
New Zealand, Queensland