ferruginous


adjective

  1. Geology. iron-bearing: ferruginous clays.
  2. of the color of iron rust.

adjective

  1. (of minerals, rocks, etc) containing irona ferruginous clay
  2. rust-coloured

adj.

  1. Associated with or containing iron.
  2. Having the color of iron rust; reddish-brown.

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