(n.) A mineral, of a white color and vitreous luster. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). laumontite. Retrieved September 28, 2026, from http://smartdefine.org/laumontite/definitions/2026890 |
| Chicago | Webster's. 2011. "laumontite" http://smartdefine.org/laumontite/definitions/2026890 (accessed September 28, 2026). |
| Harvard | Webster's 2011, laumontite, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/laumontite/definitions/2026890>. |
| MLA | Webster's. "laumontite" 27 May 2011. Web. 28 September 2026. <http://smartdefine.org/laumontite/definitions/2026890> |