Porphyry

Definition:

  • (n.) A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, and green varieties, which are highly esteemed as marbles.

Compare porphyry with other words:

porphyritic vs. porphyry

matrix vs. porphyry

grained vs. porphyry

fine vs. porphyry

crystal vs. porphyry

porphyry vs. rock

igneous vs. porphyry