1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
1.1.2 Afrika
Cameroon, East Africa, Tanzania, Western Africa
1.1.3 Eropah
United Kingdom
1.1.4 lain
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
Canada, USA
1.2.2 Amerika Selatan
Bolivia, Brazil, Kolumbia, Ekuador
1.3 deposito di oceania benua
1.3.1 Australia
New South Wales, New Zealand, Queensland, Western Australia