deposito di benua timur
Asia
Japan, Oman
-
Afrika
South Africa
South Africa
Eropah
France, Germany, Italy
England, Finland, United Kingdom
lain
pulau hawaii, mid-Atlantik ridge
antarctica, tanah penggembalaan
deposito di benua Barat
Amerika Utara
Canada, USA
USA
Amerika Selatan
-
Kolumbia, uruguay
deposito di oceania benua
Australia
-
New Zealand, Western Australia