Graphites G13 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science



Frame ID: G13

Sample ID: Graphite

Magnification: As given

Illuminator: Vertical

Objective: 10x air

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter: None

Important Features: Graphite anode paste

High Res image (300 dpi)

Description: This frame shows two pellets of green anode paste that have coalesced. There is a large particle of petroleum coke at the left and an anode butt fragment on the right. The zone in the middle has an excess of void space due to a lack of pitch. Note the elongate shape of the voids. This area is a zone of weakness.