Frame ID: M18 Sample ID: Metallurgical Coke Magnification: As given Illuminator: Vertical Objective: 50x oil Polarizer: In Analyzer: In Retarder Plate: In Filter: (80 daylight) Important Features: Fine ribbon anisotropic coke texture High Resolution Image (300 dpi)
Description: The purple and green speckled area is cell wall material and the dark areas around the margins are vesicles. In the ASTM/U.S. Steel Carbon Form Classification this sample falls into the Ribbon Anisotropic 2.0-12.0 µ group. This type of carbon form is typical of medium volatile bituminous coals of V type 15.