Asia
Russia
Not Yet Found
Afrika
Angola, Botswana, Cameroon, Ethiopia, South Africa
Not Yet Found
Eropah
England, Hungary, Iceland, United Kingdom
Bulgaria
lain
antarctica, tanah penggembalaan
belum menemukan
Amerika Utara
Canada, Mexico, USA
USA
Amerika Selatan
Argentina, Kolumbia, Ekuador
belum menemukan
deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
Not Yet Found