1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
China, India, Israel, Russia, South Korea, Thailand, Turkey
1.1.2 Afrika
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Ethiopia, Morocco, South Africa, Zimbabwe
1.1.3 Eropah
England, France, Germany, Spain, United Kingdom
England, Italy, Norway, Scotland, Sweden, United Kingdom
1.1.4 lain
belum menemukan
tanah penggembalaan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, USA
Bahamas, Canada, USA
1.2.2 Amerika Selatan
Kolumbia
Brazil, Kolumbia, venezuela
1.3 deposito di oceania benua
1.3.1 Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula
New Zealand, Queensland, Western Australia