Asia
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
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Afrika
Kenya, Morocco, South Africa, Tanzania
-
Eropah
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
United Kingdom
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
Canada, Mexico, USA
USA
Amerika Selatan
Bolivia, Brazil
Kolumbia, Paraguai
deposito di oceania benua
Australia
New South Wales, Queensland, South Australia, Western Australia
Central Australia, Western Australia