1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Russia
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
1.1.2 Afrika
South Africa, Western Africa
Kenya, Morocco, South Africa, Tanzania
1.1.3 Eropah
Not Yet Found
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
1.1.4 lain
belum menemukan
tanah penggembalaan, mid-Atlantik ridge
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, USA
Canada, Mexico, USA
1.2.2 Amerika Selatan
belum menemukan
Bolivia, Brazil
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, Western Australia
New South Wales, Queensland, South Australia, Western Australia