Color: Esopus Cher ranges from a dark gray or brown to a brownish black or black. 

Texture:  Medium grain

Luster: Dull

Translucency: 

Silica Fabrics / Fossils: Pteropods

Patina: Gray

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Esopus Chert is associated with the Esopus Member of the Onondaga Limestone Formation.  Primary outcroppings are found near Esopus and Catskill, New York.  Has been reported from the north‐south belt in the Hudson Valley in Albany, Green, and Ulster, Orange, Otsego, Schoharie, and Ulster counties, New York.