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