(n.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Periclasite. Retrieved September 24, 2026, from http://smartdefine.org/periclasite/definitions/2043794 |
| Chicago | Webster's. 2011. "Periclasite" http://smartdefine.org/periclasite/definitions/2043794 (accessed September 24, 2026). |
| Harvard | Webster's 2011, Periclasite, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/periclasite/definitions/2043794>. |
| MLA | Webster's. "Periclasite" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/periclasite/definitions/2043794> |