deposito di benua timur
  
  
Asia
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
  
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
  
Afrika
Kenya, Morocco, South Africa, Tanzania
  
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
  
Eropah
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
  
England, France, Germany, Spain, United Kingdom
  
lain
tanah penggembalaan, mid-Atlantik ridge
  
belum menemukan
  
deposito di benua Barat
  
  
Amerika Utara
Canada, Mexico, USA
  
Canada, USA
  
Amerika Selatan
Bolivia, Brazil
  
Kolumbia
  
deposito di oceania benua
  
  
Australia
New South Wales, Queensland, South Australia, Western Australia
  
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula