M11
Frame ID: M11
Sample ID: Metallurgical Coke
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: In
Retarder Plate: In
Filter: None
Important Features: Fine lenticular anisotropic coke texture
Description: The red and yellow speckled area is cell wall material and the dark areas around the margins are vesicles. An inertinite fragment is seen at the right center part of the frame. In the ASTM/U.S. Steel Carbon Form Classification this sample falls into the Lenticular Anisotropic 1.0-3.0 µ group. This type of carbon form is typical of medium volatile bituminous coals of V type 12.