(n.) A name given to a group of minerals, closely related in crystalline form, and all silicates of alumina with either potash, soda, lime, or, in one case, baryta. They occur in crystals and crystalline masses, vitreous in luster, and breaking rather easily in two directions at right angles to each other or nearly so. The colors are usually white or nearly white, flesh-red, bluish or greenish.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). feldspath. Retrieved September 25, 2026, from http://smartdefine.org/feldspath/definitions/2007384 |
| Chicago | Webster's. 2011. "feldspath" http://smartdefine.org/feldspath/definitions/2007384 (accessed September 25, 2026). |
| Harvard | Webster's 2011, feldspath, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/feldspath/definitions/2007384>. |
| MLA | Webster's. "feldspath" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/feldspath/definitions/2007384> |