Fly Ash F58 | Petrographic Atlas | SIU

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Crelling's Petrographic Atlas of Coals and Carbons

College of Science

FA58

fa58

Frame ID: FA 58

Sample ID: 92371 (slide 386-13)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Large glass sphere

Portion of wall of large glassy sphere.  Note spinel (to be illustrated in slides ) included in glass.  Unspecified coal source.