Fly Ash FA91 | Petrographic Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

FA91

fa91

Frame ID: FA 91

Sample ID: 92591 (slide 397-20)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel spheres flanking highly-reflecting metal shard.  Fly ash from power plant burning low-sulfur, high volatile B bituminous western US coal.