Asia
India, Russia
Bangladesh, China, India, Russia
Afrika
South Africa
Ethiopia, Kenya, Morocco, South Africa, Tanzania
Eropah
Germany, Greece, Italy, Scotland, Turkey
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
Canada, USA
USA
Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
deposito di oceania benua
Australia
New Zealand, Queensland
New South Wales, New Zealand, Queensland, Victoria, Western Australia