Color:  Greenfield Chert ranges from a light to dark gray with white chalcedony / quartz inclusions.

Texture: Medium to fine grain

Luster:

Silica Fabrics / Fossils: Stylolites, ostrocods, and poorly preserved brachiopods

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Greenfield Chert is associated with the Saline Group, Greenfield formation of Ohio.  Primary outcroppings are located in Highland and Ross counties Ohio.  Thought to extend into West Virginia and possibly Kentucky.