deposito di benua timur
Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
India
Afrika
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
-
Eropah
United Kingdom
-
lain
-
antarctica
deposito di benua Barat
Amerika Utara
USA
USA
Amerika Selatan
Kolumbia
-
deposito di oceania benua
Australia
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula
-