Eropah
Germany, Greece, Italy, Scotland, Turkey
Bulgaria, England, Germany, Norway, Romania, Switzerland
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
Canada, USA
USA
Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
Argentina, Bolivia, Brazil, Chili, Kolumbia, Ekuador, peru
deposito di oceania benua
Australia
New Zealand, Queensland
New South Wales, New Zealand, Queensland, South Australia, Western Australia