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Porphyre vs Porphyry - What's the difference?

porphyre | porphyry |

As nouns the difference between porphyre and porphyry

is that porphyre is obsolete form of porphyry while porphyry is a hard igneous rock consisting of large crystals in a fine-grained matrix.

porphyre

English

Noun

  • * John Locke
    • Let us consider the red and white colours in porphyre : hinder light but from striking on it, and its colours vanish; it no longer produces any such ideas in us
    (Webster 1913)

    porphyry

    English

    Noun

  • (geology) a hard igneous rock consisting of large crystals in a fine-grained matrix
  • # A purple-red rock of this kind.
  • #*

    • Derived terms

    * porphyry shell