deposito di benua timur
Asia
Japan, Oman
-
Afrika
South Africa
Uganda
Eropah
France, Germany, Italy
Germany, Hungary, Italy, Spain
lain
pulau hawaii, mid-Atlantik ridge
tanah penggembalaan, mid-Atlantik ridge
deposito di benua Barat
Amerika Utara
Canada, USA
USA
Amerika Selatan
-
Bolivia, Brazil
deposito di oceania benua
Australia
-
New South Wales, New Zealand, Queensland, South Australia, Western Australia