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Geochemistry of rare earth elements and other critical metals. Evolution of pegmatites and alkaline/peralkaline magmatichydrothermal systems. CO2 sequestration in geological rock formations.
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Rare earth elements as critical raw materials: Focus on international markets and future strategies Gold Elements Database Ever since gold has been known to man, 165,000 tons of it has been mined.
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The Geology of Rare Earth Elements. Rare earth elements are scattered through earth's crust and occur in mineable concentrations in very few areas.