deposito di benua timur
Asia
India, Russia
South Korea
Afrika
South Africa
Western Africa
Eropah
Germany, Greece, Italy, Scotland, Turkey
Great Britain, Switzerland
lain
tanah penggembalaan, mid-Atlantik ridge
-
deposito di benua Barat
Amerika Utara
Canada, USA
-
Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
-
deposito di oceania benua
Australia
New Zealand, Queensland
Central Australia, Western Australia