deposito di benua timur
  
  
Asia
India, Russia
  
Russia, Turkey
  
Afrika
South Africa
  
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
  
Eropah
Germany, Greece, Italy, Scotland, Turkey
  
Germany, Greece, Iceland, Norway, Poland
  
lain
tanah penggembalaan, mid-Atlantik ridge
  
belum menemukan
  
deposito di benua Barat
  
  
Amerika Utara
Canada, USA
  
Canada, USA
  
Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
  
Brazil
  
deposito di oceania benua
  
  
Australia
New Zealand, Queensland
  
South Australia, Western Australia