1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
1.1.2 Afrika
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Angola, Botswana, Cameroon, Ethiopia, South Africa
1.1.3 Eropah
Germany, Iceland, Ireland, Italy, Spain
England, Hungary, Iceland, United Kingdom
1.1.4 lain
belum menemukan
antarctica, tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, USA
Canada, Mexico, USA
1.2.2 Amerika Selatan
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
Argentina, Kolumbia, Ekuador
1.3 deposito di oceania benua
1.3.1 Australia
New Zealand, Queensland, Western Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia