1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Japan, Oman
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
1.1.2 Afrika
South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
1.1.3 Eropah
France, Germany, Italy, Venezuela
Bulgaria, England, Germany, Norway, Romania, Switzerland
1.1.4 lain
pulau hawaii, mid-Atlantik ridge
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
belum menemukan
Brazil, Chili
1.3 deposito di oceania benua
1.3.1 Australia
Not Yet Found
New Zealand, Queensland, South Australia, Western Australia