Castorite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
     [1913 Webster]