Graphites G18 | Petrographic Atlas | SIU

Home
Southern Illinois University

CONTACT

SIU.EDU

Crelling's Petrographic Atlas of Coals and Carbons

College of Science

G18

g18

Frame ID: G18

Sample ID: Graphite

Magnification: As given

Illuminator: Vertical

Objective: 10x air

Polarizer: In

Analyzer: In

Retarder Plate: Out

Filter: None

Important Features: Baked graphite anode

High Res image (300 dpi)

Description: This frame is the same as C1, but with the polarizer and analyzer in. Note how the change in optical conditions enhances the identification of the various phases present.