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