M29
Frame ID: M29
Sample ID: Metallurgical Coke
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: In
Retarder Plate: In
Filter: None
Important Features: Inclusion of bone coal
Description: The black streaks across the center of the frame are mineral matter from a particle of bone coal. Note the finer mosaic size around this area.