Asia
India, Russia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Afrika
South Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Eropah
Germany, Greece, Italy, Scotland, Turkey
United Kingdom
lain
tanah penggembalaan, mid-Atlantik ridge
-
Amerika Utara
Canada, USA
USA
Amerika Selatan
Bolivia, Brazil, Kolumbia, venezuela
Kolumbia
deposito di oceania benua
Australia
New Zealand, Queensland
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula