Depozite în Continente de Est
Asia
Bangladesh, China, India, Russia
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Africa
Ethiopia, Kenya, Morocco, South Africa, Tanzania
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Europa
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic
Depozite în Continente de Vest
America de Nord
USA
Canada
America de Sud
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Bolivia, Colombia
Depozite în Oceania Continent
Australia
New South Wales, New Zealand, Queensland, Victoria, Western Australia
Central Australia, South Australia, Western Australia