FA70

Frame ID: FA70
Sample ID: 92506 (slide 389-10)
Magnification: 330 microns on long side
Illuminator: Vertical
Objective: 32x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Mullite

Description: Mullite in glass with spinel from power plant burning high-sulfur, high volatile C bituminous Western Kentucky coal.