Fly Ash FA55 | Petrographic Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

FA55

fa55

Frame ID: FA 55

Sample ID: 92293 (slide 334-33)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Glassy edge of particle

Vitrified outer boundary of particle.  The interior has been thermally altered, note high reflectance carbons.  From Tennessee power plant burning medium-sulfur, high volatile A bituminous Central Appalachian coal.