deposito di benua timur
Asia
Russia
-
Afrika
South Africa, Western Africa
Uganda
Eropah
-
Germany, Hungary, Italy, Spain
lain
-
tanah penggembalaan, mid-Atlantik ridge
deposito di benua Barat
Amerika Utara
Canada, USA
USA
Amerika Selatan
-
Bolivia, Brazil
deposito di oceania benua
Australia
Central Australia, Western Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia