Porphyry

Porphyry (/ˈpɔːrfɪri/; Greek: Πορφύριος, Porphyrios "purple-clad") may refer to:

  • Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix and important Roman building material
  • Porphyritic, the general igneous texture of a rock with two distinct crystal (phenocryst) sizes
  • Porphyry copper deposit, a primary (low grade) ore deposit of copper, consisting of porphyry rocks
  • Tyrian purple or Porphyra, a purple-red natural dye
  • "Porphyria's Lover", originally published as "Porphyria", a poem by Robert Browning
  • Porphyrian tree, classic device for illustrating hierarchy and ontology
  • Porphyria, a disease
  • Porphyrins, a group of organic compounds

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