1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
1.1.2 Afrika
Egypt, Ethiopia, South Africa
South Africa, Tanzania
1.1.3 Eropah
France, Greece, Iceland
Germany, Greece, Italy, Scotland, Turkey
1.1.4 lain
belum menemukan
antarctica, tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
belum menemukan
Argentina, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand
Central Australia, New Zealand, Queensland, Western Australia