Found 1 items, similar to iron hat.
English → English (gcide) Definition: iron hat Gossan \Gos"san\, n. (Geol.) Decomposed rock, usually reddish or ferruginous (owing to oxidized pyrites), forming the upper part of a metallic vein. Called also iron hat. [1913 Webster] iron hat \i"ron hat`\, n. (Geol., Mineral.) Same as gossan. [PJC]