deposito di benua timur
  
  
Asia
China, India, Turkey
  
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
  
Afrika
Not Yet Found
  
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
  
Eropah
Belgium, France, Germany, Italy, Norway, Portugal, Spain, United Kingdom
  
United Kingdom
  
lain
arktik
  
belum menemukan
  
deposito di benua Barat
  
  
Amerika Utara
USA
  
USA
  
Amerika Selatan
Brazil
  
Kolumbia
  
deposito di oceania benua
  
  
Australia
Not Yet Found
  
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula