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  1. Jan 2020
  2. en.wikipedia.org en.wikipedia.org
    Bauxite - Wikipedia
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    1. Deborah.H.P3 15 Jan 2020
      Bauxite is the main source of the rare metal gallium

      the source of gallium.

      c-rare earth c-gallium k-fact
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    en.wikipedia.org/wiki/Bauxite