The Collaborative International Dictionary of English v.0.48:

Pentelic \Pen*tel"ic\, Pentelican \Pen*tel"i*can\, a.
   Of or pertaining to Mount Pentelicus, near Athens, famous for
   its fine white marble quarries; obtained from Mount
   Pentelicus; as, the Pentelic marble of which the Parthenon is
   built.
   [1913 Webster]