1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
1.1.2 Afrika
Cameroon, East Africa, Tanzania, Western Africa
Kenya, Morocco, South Africa, Tanzania
1.1.3 Eropah
United Kingdom
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
Bolivia, Brazil, Kolumbia, Ekuador
Bolivia, Brazil
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, New Zealand, Queensland, Western Australia
New South Wales, Queensland, South Australia, Western Australia