FA62
Frame ID: FA 62
Sample ID: 92571 (slide 412-1)
Magnification: 200 microns on long side
Illuminator: Vertical
Objective: 50x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Glass with included crystals
Glass with included crystals, possibly mullite, from power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.