1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India
China, India, Israel, Russia, South Korea, Thailand, Turkey
1.1.2 Afrika
Morocco, Namibia
Ethiopia, Morocco, South Africa, Zimbabwe
1.1.3 Eropah
Austria, Italy, Romania, Spain, Switzerland
England, Italy, Norway, Scotland, Sweden, United Kingdom
1.1.4 lain
belum menemukan
tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Mexico, USA
Bahamas, Canada, USA
1.2.2 Amerika Selatan
Brazil, Kolumbia
Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, Queensland, Yorke Peninsula
New Zealand, Queensland, Western Australia