(n.) A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). greensand. Retrieved September 25, 2026, from http://smartdefine.org/greensand/definitions/2013650 |
| Chicago | Webster's. 2011. "greensand" http://smartdefine.org/greensand/definitions/2013650 (accessed September 25, 2026). |
| Harvard | Webster's 2011, greensand, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/greensand/definitions/2013650>. |
| MLA | Webster's. "greensand" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/greensand/definitions/2013650> |