Metallurgical Coke M09| Petrographics Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science



Frame ID: M09

Sample ID: Metallurgical Coke

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter: None

Important Features: Coarse circular anisotropic coke texture

High Res image (300 dpi)

Description: The red and yellow speckled area is cell wall material and the dark circular areas at top right and lower left are vesicles. In the ASTM/U.S. Steel Carbon Form Classification this sample falls into the Circular Anisotropic 1.5-2.0 µ group. This type of carbon form is typical of medium volatile bituminous coals of V type 11.