1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
1.1.2 Afrika
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Kenya, Morocco, South Africa, Tanzania
1.1.3 Eropah
England, France, Germany, Spain, 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
1.3 deposito di oceania benua
1.3.1 Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula
New South Wales, Queensland, South Australia, Western Australia