Color:  Avon Chert is primarily shades of white with grays, tans and reds occurring.

Texture:  Fine grain

Luster: Dull

Silica Fabrics / Fossils:

Patina:

Heat Treatment:  Heat treatment produces colors of reds and purples and increases he luster.

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Avon Chert is associated with the Burlington Limestone in the Mississippian formation found along the Cedar Creek and the tributary Spoon River north of Avon, Illinois.