Coal Macerals MA32 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA32
Sample ID: Pittsburgh Seam, high volatile A bituminous coal, Pennsylvania
Maceral Group: Inertinite
Maceral Type: Fusinite
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: Out
Retarder Plate: Out
Filter: None
Important Features: Typical occurrence of fusinite
High Resolution Image (300 dpi)

Description: The open cell-wall structure with a very high reflectance is characteristic of fusinite. The cell-wall structure is believed to be charred and coalified remnant plant cell-wall structure.Charred wood (charcoal) has a similar appearance.