Metallurgical Coke M04 | Petrographics Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

M04

m04

Frame ID: M04

Sample ID: Metallurgical Coke

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter: Blue (80 daylight)

Important Features: Incipient coke texture

High Res image (300 dpi)

Description: The purple and green speckled area is cell wall material and the dark circular areas at the top left are vesicles. In the ASTM/U.S. Steel Carbon Form Classification this sample falls into the Incipient 0- 0.5 µ group. This type of carbon form is typical of high volatile bituminous coals of V type 8.