Asia
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
Not Yet Found
Afrika
Kenya, Morocco, South Africa, Tanzania
Not Yet Found
Eropah
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
France, Greece, Romania, Scotland, Spain
lain
tanah penggembalaan, mid-Atlantik ridge
belum menemukan
Amerika Utara
Canada, Mexico, USA
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, South Australia, Western Australia