1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India, Russia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
1.1.2 Afrika
South Africa
Cameroon, East Africa, Tanzania, Western Africa
1.1.3 Eropah
Germany, Greece, Italy, Scotland, Turkey
United Kingdom
1.1.4 lain
tanah penggembalaan
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Brazil, Kolumbia, venezuela
Bolivia, Brazil, Kolumbia, Ekuador
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Queensland
New South Wales, New Zealand, Queensland, Western Australia