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