What is the meaning of Castorite?

(n.) A variety of the mineral called petalite, from Elba.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). castorite. Retrieved September 21, 2026, from http://smartdefine.org/castorite/definitions/1985176
ChicagoWebster's. 2011. "castorite" http://smartdefine.org/castorite/definitions/1985176 (accessed September 21, 2026).
HarvardWebster's 2011, castorite, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/castorite/definitions/1985176>.
MLAWebster's. "castorite" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/castorite/definitions/1985176>