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