Specimen Details

  • Number Of Specimens

    1

  • Specimen Nature

    Hand Specimen

  • Rock Name

    Rhyolite Porphyry

  • Rock Class

    Igneous

  • Rock Group

    Hypabyssal

  • Rock Description

    Previously classified as Rhyolitic Porphyry.This specimen is omposed of phenocrysts of light pink feldspar (<4mm) and small, black biiotite crystals in a reddish-brown, very fine grained matrix.

  • Category

    Natural Sciences

  • Scientific Group

    Geology

  • Discipline

    Petrology

  • Collecting Areas

    Rocks and Ores

  • Type of Item

    Specimen

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