FA83
Frame ID: FA 83
Sample ID: 92317 (slide 348-27)
Magnification: 330 microns on long side
Illuminator: Vertical
Objective: 32x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Spinel
Multiple spinel spheres in 200 x 325 mesh size fraction of fly ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.