Rare earth element enriched birnessite in water-bearing fractures, the Ytterby mine, Sweden

Applied Geochemistry(2017)

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摘要
Characterization of a black substance exuding from fractured bedrock in a subterranean tunnel revealed a secondary manganese oxide mineralisation exceptionally enriched in rare earth elements (REE). Concentrations are among the highest observed in secondary ferromanganese precipitates in nature. The tunnel is located in the unsaturated zone at shallow depth in the former Ytterby mine, known for the discovery of yttrium, scandium, tantalum and five rare earth elements.
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关键词
Ytterby mine,Manganese oxides,Birnessite,Rare earth elements,Microbial mediation
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