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