FA55
Frame ID: FA 55
Sample ID: 92293 (slide 334-33)
Magnification: 330 microns on long side
Illuminator: Vertical
Objective: 32x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Glassy edge of particle
Vitrified outer boundary of particle. The interior has been thermally altered, note high reflectance carbons. From Tennessee power plant burning medium-sulfur, high volatile A bituminous Central Appalachian coal.