Specimen Details

  • Number Of Specimens

    1

  • Specimen Nature

    Hand Specimen

  • Rock Name

    Welded Basalt Tuff

  • Rock Class

    Igneous

  • Rock Group

    Volcanic

  • Rock Description

    This specimen is composed of numerous, angular to rounded fragments of very fine grained to glassy, black basalt (,1cm) in a matrix of very small angular fragments in a yellowish-brown groundmass. The specimen is somewhat vesicular and many vesicles are filled with various minerals including pyrite. Previously called Variety Tachylite. With Pyrite.

  • Category

    Natural Sciences

  • Scientific Group

    Geology

  • Discipline

    Petrology

  • Collecting Areas

    Rocks and Ores

  • Type of Item

    Specimen

Geospatial Information