Asia
Not Yet Found
South Korea
Afrika
Uganda
Western Africa
Eropah
Germany, Hungary, Italy, Spain
Great Britain, Switzerland
lain
tanah penggembalaan, mid-Atlantik ridge
belum menemukan
Amerika Utara
USA
Not Yet Found
Amerika Selatan
Bolivia, Brazil
belum menemukan
deposito di oceania benua
Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia
Central Australia, Western Australia