Color: Onteaunee Chert ranges from a dark gray to black.  White chert also occurs.

Texture: 

Luster:

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Ontelaunee Chert is associated with the Ontelaunee Formation of the Beekmantown Group of southeastern Pennsylvania and into New Jersey.  Primary outcroppings occur along the Schuykill River 1 mile southeast of Leesport, Berks County, Pennsylvania also reported in Lebanon, Dauphin, and Lancaster counties, Pennsylvania.