Metallurgical Coke M14 | Petrographics Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

M14

m14

Frame ID: M14

Sample ID: Metallurgical Coke

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter: (80 daylight)

Important Features: Medium lenticular anisotropic coke texture

High Res image (300 dpi)

Description: The purple and green speckled area is cell wall material. The isotropic area to the right of center is an inertinite fragment. In the ASTM/U.S. Steel Carbon Form Classification this sample falls into the medium Lenticular Anisotropic 3.0-8.0 µ group. This type of carbon form is typical of medium volatile bituminous coals of V type 13.