Afrika
Uganda
Morocco, Namibia
Eropah
Germany, Hungary, Italy, Spain
Austria, Italy, Romania, Spain, Switzerland
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
USA
Mexico, USA
Amerika Selatan
Bolivia, Brazil
Brazil, Kolumbia
deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
New South Wales, Queensland, Yorke Peninsula