D defs.my
Entry 1 sense Webster, 1913

Auriferous

· Au·rif·er·ous · IPA /ɔːˈɹɪfəɹəs/
01 a. Gold-bearing; containing or producing gold.
  1. 1.
    Gold-bearing; containing or producing gold.
    “Whence many a bursting stream auriferous plays.” Thomson.
Phrases & compounds
Auriferous pyrites — iron pyrites (iron disulphide), containing some gold disseminated through it.