1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
China, India
1.1.2 Afrika
Ethiopia, Morocco, South Africa
Morocco, Namibia
1.1.3 Eropah
France, Germany, Italy, Norway, Scotland
Austria, Italy, Romania, Spain, Switzerland
1.1.4 lain
tanah penggembalaan
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, Costa Rica, Panama, USA
Mexico, USA
1.2.2 Amerika Selatan
Argentina, Brazil, Kolumbia, Ekuador
Brazil, Kolumbia
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, New Zealand, Queensland
New South Wales, Queensland, Yorke Peninsula