(n.) A sulphide of iron resembling pyrite or common iron pyrites in composition, but differing in form; white iron pyrites.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). marcasite. Retrieved September 24, 2026, from http://smartdefine.org/marcasite/definitions/2030574 |
| Chicago | Webster's. 2011. "marcasite" http://smartdefine.org/marcasite/definitions/2030574 (accessed September 24, 2026). |
| Harvard | Webster's 2011, marcasite, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/marcasite/definitions/2030574>. |
| MLA | Webster's. "marcasite" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/marcasite/definitions/2030574> |