The Collaborative International Dictionary of English v.0.48:

Auriferous \Au*rif"er*ous\, a. [L. aurifer; aurum gold + ferre
   to bear: cf. F. aurif[`e]re.]
   Gold-bearing; containing or producing gold.
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         Whence many a bursting stream auriferous plays.
                                                  --Thomson.
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   Auriferous pyrites, iron pyrites (iron disulphide),
      containing some gold disseminated through it.
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