1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Russia, South Korea
India, Russia
1.1.2 Afrika
Western Africa
South Africa
1.1.3 Eropah
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
belum menemukan
Bolivia, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, Western Australia
New Zealand, Queensland