mining cassiterite in brazil a preliminary report on the gold deposits of georgia

Spilpunt: Congo (Kinshasa)

Mineral commodities and Africa. Information for geologists and miners exploring mineral deposits in Africa

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Journal of weekly news and commentaries about rocks and ...

Collection of weekly news and commentaries from John Betts, lecturer, author, photographer, mineral collector, and mineral dealer. Practical everyday advice for mineral collectors on building and organizing mineral collections.

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