Coal Macerals MA17 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA17
Sample ID: Hiawatha seam, high volatile C bituminous coal, Wasatch Plateau, Utah
Maceral Group: Liptinite
Maceral Type: Resinite
Magnification: As given
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter: None
Important Features: A xenolith of coal in a cleat filling of resinite.
High Resolution Image (300 dpi)

Description: Under blue-light illumination the cleat-filling resinite fluoresces a bright greenish-yellow. Note the non-fluorescing particles included in the cleat. These are coal xenoliths swept into the cleat when the mobile resinite was injected into the cleat.