Asia
Russia
Japan, Turkey
Afrika
Angola, Botswana, Cameroon, Ethiopia, South Africa
Egypt, Ethiopia, South Africa
Eropah
England, Hungary, Iceland, United Kingdom
France, Greece, Iceland
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
New Zealand