1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
1.1.2 Afrika
Ethiopia, Ghana, Western Africa
South Africa, Tanzania
1.1.3 Eropah
England
Germany, Greece, Italy, Scotland, Turkey
1.1.4 lain
belum menemukan
antarctica, tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Argentina, Bolivia, uruguay
Argentina, Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, South Australia, Western Australia
Central Australia, New Zealand, Queensland, Western Australia