Petalite

1 definition found

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

  Petalite \Pet"al*ite\, n. [Cf. F. p['e]talite.] (Min.)
     A rare mineral, occurring crystallized and in cleavable
     masses, usually white, or nearly so, in color. It is a
     silicate of aluminum and lithium.
     [1913 Webster]