1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
China, India, Israel, Russia, South Korea, Thailand, Turkey
1.1.2 Afrika
South Africa, Western Africa
Ethiopia, Morocco, South Africa, Zimbabwe
1.1.3 Eropah
United Kingdom
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
Canada
Bahamas, Canada, USA
1.2.2 Amerika Selatan
Brazil, Kolumbia, Paraguai
Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, Western Australia
New Zealand, Queensland, Western Australia