(n.) Decomposed rock, usually reddish or ferruginous (owing to oxidized pyrites), forming the upper part of a metallic vein.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Gossan. Retrieved September 23, 2026, from http://smartdefine.org/gossan/definitions/2013162 |
| Chicago | Webster's. 2011. "Gossan" http://smartdefine.org/gossan/definitions/2013162 (accessed September 23, 2026). |
| Harvard | Webster's 2011, Gossan, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/gossan/definitions/2013162>. |
| MLA | Webster's. "Gossan" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/gossan/definitions/2013162> |