1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Not Yet Found
1.1.2 Afrika
Uganda
1.1.3 Eropah
Germany, Hungary, Italy, Spain
1.1.4 lain
tanah penggembalaan, mid-Atlantik ridge
1.2 deposito di benua Barat
1.2.1 Amerika Utara
USA
1.2.2 Amerika Selatan
Bolivia, Brazil
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia