Specimen Details

  • Collection Names

    Krantz M&P Collection (K45)

  • Number Of Specimens

    1

  • Specimen Nature

    Hand Specimen

  • Rock Name

    Alnoite

  • Rock Class

    Igneous

  • Rock Group

    Plutonic

  • Rock Description

    Alnoite, named from the Island, which is a lamprophyre chiefly composed of biotite or phlogopite phenocrysts and melilite as essential minerals, commonly with a matrix of fine grained olivine, calcite and clinopyroxene. Perovskite, apatite, nepheline and garnet may also be present.

  • Category

    Natural Sciences

  • Scientific Group

    Geology

  • Discipline

    Petrology

  • Collecting Areas

    Rocks and Ores

  • Type of Item

    Specimen