Asia
Not Yet Found
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Afrika
Not Yet Found
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Eropah
Bulgaria
England, France, Germany, Spain, United Kingdom
lain
belum menemukan
belum menemukan
Amerika Utara
USA
Canada, USA
Amerika Selatan
belum menemukan
Kolumbia
deposito di oceania benua
Australia
Not Yet Found
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula