1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India
India, Russia
1.1.2 Afrika
Angola, Egypt, Madagascar, Namibia, Nigeria
South Africa
1.1.3 Eropah
Germany, Iceland, Ireland, Italy, Spain, United Kingdom
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
Argentina, Bolivia, Brazil, Kolumbia, Ekuador
Bolivia, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, Queensland, Western Australia
New Zealand, Queensland