1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
India, Indonesia, Japan, Nepal, South Korea
1.1.2 Afrika
Kenya, Morocco, South Africa, Tanzania
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania
1.1.3 Eropah
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom
1.1.4 lain
tanah penggembalaan, mid-Atlantik ridge
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, Mexico, USA
Mexico, USA
1.2.2 Amerika Selatan
Bolivia, Brazil
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, Queensland, South Australia, Western Australia
New South Wales, New Zealand, Western Australia