Depozite în Continente de Est
Asia
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
China, India, Indonesia, Russia, Singapore, South Korea
Africa
Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa
Europa
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
Albania, France, Germany, Great Britain, United Kingdom
Alții
antarctica, insulele hawaii
nu a fost încă găsite
Depozite în Continente de Vest
America de Nord
Canada, Costa Rica, Panama, USA
Canada, USA
America de Sud
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador
Brazil, Colombia, Ecuador
Depozite în Oceania Continent
Australia
Central Australia, Western Australia
New South Wales, South Australia, Western Australia