Asia
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
China, India
Afrika
Kenya, Morocco, South Africa, Tanzania
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Eropah
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Germany, Iceland, Ireland, Italy, Spain
lain
tanah penggembalaan, mid-Atlantik ridge
belum menemukan
Amerika Utara
Canada, Mexico, USA
Canada, USA
Amerika Selatan
Bolivia, Brazil
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
deposito di oceania benua
Australia
New South Wales, Queensland, South Australia, Western Australia
New Zealand, Queensland, Western Australia