1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
1.1.2 Afrika
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
South Africa, Tanzania
1.1.3 Eropah
Germany, Greece, Iceland, Norway, Poland
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
Brazil
Argentina, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
South Australia, Western Australia
Central Australia, New Zealand, Queensland, Western Australia