deposito di benua timur
  
  
Asia
Bangladesh, China, India, Israel, Jordan, Russia, Syria, Thailand, Turkey
  
Japan, Oman
  
Afrika
Ethiopia, Kenya, Morocco, South Africa, Tanzania
  
South Africa
  
Eropah
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Sweden, Switzerland
  
France, Germany, Italy, Venezuela
  
lain
tanah penggembalaan, belum menemukan
  
pulau hawaii, mid-Atlantik ridge
  
deposito di benua Barat
  
  
Amerika Utara
Canada, USA
  
Canada, USA
  
Amerika Selatan
Bolivia, Brazil, Chili, Kolumbia, Ekuador, peru, venezuela
  
belum menemukan
  
deposito di oceania benua
  
  
Australia
New South Wales, New Zealand, Queensland, Victoria, Western Australia
  
Not Yet Found