1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
1.1.2 Afrika
Morocco, Namibia
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
1.1.3 Eropah
Austria, Italy, Romania, Spain, Switzerland
Bulgaria, England, Germany, Norway, Romania, Switzerland
1.1.4 lain
belum menemukan
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Brazil, Kolumbia
Brazil, Chili
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, Queensland, Yorke Peninsula
New Zealand, Queensland, South Australia, Western Australia