riolit dan riolit cadangan
cadangan
deposito di benua timur
Asia
China, India
China, India
Afrika
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Eropah
Germany, Iceland, Ireland, Italy, Spain
Germany, Iceland, Ireland, Italy, Spain
lain
belum menemukan
belum menemukan
deposito di benua Barat
Amerika Utara
Canada, USA
Canada, USA
Amerika Selatan
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
Argentina, Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
deposito di oceania benua
Australia
New Zealand, Queensland, Western Australia
New Zealand, Queensland, Western Australia
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