1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Russia, Turkey
India, Russia
1.1.2 Afrika
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
South Africa
1.1.3 Eropah
Germany, Greece, Iceland, Norway, Poland
Germany, Greece, Italy, Scotland, Turkey
1.1.4 lain
belum menemukan
tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Brazil
Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
South Australia, Western Australia
New Zealand, Queensland