Frame ID: P17
Sample ID: Petroleum (Delayed) Coke
Magnification: As given
Objective: 50x oil
Retarder Plate: In
Important Features: Granular coke
Description: Coke derived from a petroleum feedstock that shows a very fine-grained granular texture. Note the coarser grain size at the edges of the particle. The fine-grained area may be the initial stage of a shot structure.