1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
1.1.2 Afrika
Angola, Botswana, Cameroon, Ethiopia, South Africa
South Africa
1.1.3 Eropah
England, Hungary, Iceland, United Kingdom
Germany, Greece, Italy, Scotland, Turkey
1.1.4 lain
antarctica, tanah penggembalaan
tanah penggembalaan, mid-Atlantik ridge
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, Mexico, USA
Canada, USA
1.2.2 Amerika Selatan
Argentina, Kolumbia, Ekuador
Bolivia, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New Zealand, Queensland