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castorite |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Castor \Cas"tor\, Castorite \Cas"tor*ite\, n. [The minerals castor and pollux were so named because found together on the island of Elba. See {Castor and Pollux}.] (Min.) A variety of the mineral called petalite, from Elba.