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