1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India, Indonesia, Russia, Singapore, South Korea
China, India, Israel, Russia, South Korea, Thailand, Turkey
1.1.2 Afrika
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa
Ethiopia, Morocco, South Africa, Zimbabwe
1.1.3 Eropah
Albania, France, Germany, Great Britain, 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, USA
Bahamas, Canada, USA
1.2.2 Amerika Selatan
Brazil, Kolumbia, Ekuador
Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, South Australia, Western Australia
New Zealand, Queensland, Western Australia