Found 1 items, similar to Argillaceous iron ore.
English → English (gcide) Definition: Argillaceous iron ore Argillaceous \Ar`gil*la"ceous\, a. [L. argillaceus, fr. argilla.] Of the nature of clay; consisting of, or containing, argil or clay; clayey. [1913 Webster] Argillaceous sandstone (Geol.), a sandstone containing much clay. Argillaceous iron ore, the clay ironstone. Argillaceous schist or state. See Argillite. [1913 Webster]