Coal Macerals MA07 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science


Frame ID: MA07
Sample ID: Elkhorn #3 Seam Appalachian high volatile A bituminous coal, eastern Kentucky
Maceral Group: Vitrinite
Maceral Type: Detrovitrinite and Gelovitrinite
Coal Rank: High volatile Bituminous A
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: Out
Retarder Plate: Out
Filter: None
Important Features: Detrovitrinite
 High Resolution Image (300 dpi)

Description: A particle of detrovitrinite with inclusions of megaspores and microspores (dark) and semifusinite and fusinite (bright).  The detrovitrinite acting as a matrix for other macerals is characteristic.