FA53

Frame ID: FA53
Sample ID: 91981 (slide 320-15)
Magnification: 330 microns on long side
Illuminator: Vertical
Objective: 32x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Glass

Description: Large solid glass spheres, probably containing included sub-micron crystals. From a power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.