Coal Macerals MA29 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA29
Sample ID: Brazil Block Seam, high volatile A bituminous coal, SW Indiana
Maceral Group: Liptinite
Maceral Type: Cutinite
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter: None
Important Features: Tenuicutinite fluorescing under blue-light illumination.
High Resolution Image (300 dpi)

Description: Same field of view as MA28 under blue-light illumination. Note the yellow fluorescence and the crenulation on some of the surfaces. Also note how these features are easier to distinguish when the maceral observed under fluorescent light.