1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Afghanistan, Indonesia, Japan, Russia
1.1.2 Afrika
Ethiopia, Kenya, Tanzania
1.1.3 Eropah
Greece, Hungary, Iceland, Italy, Turkey
1.1.4 lain
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA
1.2.2 Amerika Selatan
Argentina, Chili, Ekuador, peru
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Western Australia