Category:Porphyritic

Por`phy*rit"ic, a. Etym: [cf. F. porphyritique.] (min.)

Defn: relating to, or resembling, porphyry, that is, characterized by The presence of distinct crystals, as of feldspar, quartz, or augite, In a relatively fine-grained base, often aphanitic or Cryptocrystalline.