Coal Macerals MA21 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA21
Sample ID: Elkhorn #3 seam Appalachian high volatile A bituminous coal, eastern Kentucky
Maceral Group: Liptinite
Maceral Type: Sporinite
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter: None
Important Features: A sporinite maceral fluorescing yellow under blue-light illumination.
High Resolution Image (300 dpi)

Description: Same field of view as MA20 under blue-light illumination. The megaspore fluoresces with a dull yellow color and the grainy texture is enhanced.