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