Afrika
Uganda
Ethiopia, Ghana, Western Africa
Eropah
Germany, Hungary, Italy, Spain
England
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
USA
Canada, USA
Amerika Selatan
Bolivia, Brazil
Argentina, Bolivia, uruguay
deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
Central Australia, South Australia, Western Australia