Coal Macerals MA11 | Petrographic Atlas| SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA11
Sample ID: Herrin No. 6 seam, high volatile C bituminous coal, Illinois Basin, southern Illinois
Maceral Group: Liptinite
Maceral Type: Resinite
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: Out
Retarder Plate:
Filter: None
Important Features: Large low reflectance resinite ovoid.
High Resolution Image (300 dpi)

Description: The large low reflectance structureless ovoid of resinite is a typical occurrence of this maceral. The dark brown color is commonbut the color can range from black to light gray in reflected white light.