Asia
-
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
Afrika
Uganda
South Africa, Western Africa
Eropah
Germany, Hungary, Italy, Spain
United Kingdom
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Selatan
Bolivia, Brazil
Brazil, Kolumbia, Paraguai
deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
Central Australia, Western Australia