deposito di benua timur
  
  
Asia
China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam
  
Japan, Turkey
  
Afrika
Egypt, Ethiopia, Ghana, South Africa
  
Egypt, Ethiopia, South Africa
  
Eropah
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland
  
France, Greece, Iceland
  
lain
tanah penggembalaan
  
belum menemukan
  
deposito di benua Barat
  
  
Amerika Utara
Canada, Cuba, Jamaica, USA
  
USA
  
Amerika Selatan
Bolivia, Brazil, Kolumbia, Ekuador, Paraguai
  
belum menemukan
  
deposito di oceania benua
  
  
Australia
New South Wales, New Zealand, Western Australia
  
New Zealand