WordReference Random House Unabridged Dictionary of American English © 2017
met•al•lif•er•ous  (met′l ifər əs),USA pronunciation adj. 
  1. Metallurgycontaining or yielding metal.
  • Latin metallifer (see metalli-, -fer) + -ous
  • 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

metalliferous /ˌmɛtəˈlɪfərəs/ adj
  1. containing a high concentration of metallic elements
Etymology: 17th Century: from Latin metallifer yielding metal, from metallum metal + ferre to bear

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