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