Color: Cambridge Chert is a dark gray colored chert.

Texture: 

Luster:

Silica Fabrics / Fossils:

Patina:

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Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Cambridge Chert is associated with the Cambridge Limestone Formation (Nadine Limestone Formation) of the Conemaugh Group.  Cambridge Chert is a local chert occurring  in small amounts in Columbiana, Guernsey, Jefferson, Lawrence, and Muskingum counties, Ohio.  Primary outcroppings are located in Guernsey County, Ohio