AKA: Penns Creek Chert, Snyder County Chert, Troxellville Chert, Stoney Ridge Chert

Color: Shiver Chert ranges in color from a grayish brown to a medium or dark gray or black.

Texture:  Medium to fine grain

Luster: Waxy to satin

Translucency:  Opaque

Silica Fabrics / Fossils: Few including conodonts

Patina: The patina is a lighter color

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Shiver Chert is associated with the Shiver Formation of the Helderberg Group of  New York, New Jersey, Maryland, and Virginia  Primarily occurs as beds in Allegany County Maryland and Snyder and Union County, Pennsylvania.  Extends from Cumberland, Maryland to Monterey Virginia.  Named for exposures on Shiver Ridge near Cumberland, Maryland.