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