Source : Webster's Revised Unabridged Dictionary (1913)

Argentiferous \Ar`gen*tif"er*ous\, a. [L. argentum silver +
   -ferous: cf. F. argentif[`e]re.]
   Producing or containing silver; as, argentiferous lead ore or
   veins.

Source : WordNet®

argentiferous
     adj : containing or yielding silver; "argentiferous ore"