D defs.my
Entry 1 sense Webster, 1913

Perthite

· Perth·ite · IPA
01 n. A kind of feldspar consisting of a laminated intertexture of albite and orthoclase, usually of different colors.
  1. 1.
    A kind of feldspar consisting of a laminated intertexture of albite and orthoclase, usually of different colors.(Min.)