Fly Ash FA90 | Petrographic Atlas | SIU

Home
Southern Illinois University

CONTACT

SIU.EDU

Crelling's Petrographic Atlas of Coals and Carbons

College of Science

FA90

fa90

Frame ID: FA 90

Sample ID: 92506 (slide 389-6)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Fine spinel dendrites in glass.