FA92
Frame ID: FA 92
Sample ID: 92587 (slide 402-34)
Magnification: 200 microns on long side
Illuminator: Vertical
Objective: 50x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Spinel
Contrasting spinel textures. Fly ash from power plant burning low-sulfur, high volatile B bituminous western US coal.