deposito's in het oosten van continenten
Azië
India, Pakistan, Russia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Afrika
Ethiopia, Kenya, Morocco, South Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Europa
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
United Kingdom
deposito's in het westen van continenten
Zuid-Amerika
Colombia, Ecuador, Peru
Colombia
deposito's in Oceanië continent
Australië
New South Wales, Victoria, Western Australia
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula