Sample ID: Elkhorn #3 seam Appalachian high volatile A bituminous coal, eastern Kentucky
Maceral Group: Inertinite
Maceral Type: Secretinite
Magnification: As given
Objective: 50x oil
Retarder Plate: Out
Important Features: The bright round particles are secretinite macerals.
High Resolution Image (300 dpi)
Description: The two bright particles of secretinite (previously called resino-sclerotinite) show the high reflectance and lack of cell structure typical of these macerals. Similar macerals with a reflectance in the semifusinite range are called semi-macrinite.