tuff dan dasit cadangan
cadangan
deposito di benua timur
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
Not Yet Found
Afrika
Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
Not Yet Found
Eropah
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
France, Greece, Romania, Scotland, Spain
lain
antarctica, pulau hawaii
belum menemukan
deposito di benua Barat
Amerika Utara
Canada, Costa Rica, Panama, USA
USA
Amerika Selatan
Argentina, Bolivia, Brazil, Chili, Ekuador, Paraguai
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
deposito di oceania benua
Australia
Central Australia, Western Australia
New Zealand, South Australia, Western Australia
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