Color:  Roubidoux Chert ranges in color from white, gray, yellow or cream, to nearly black.

Texture:  Fine grain, dense and brittle

Luster:

Translucency:  Opaque

Silica Fabrics / Fossils: Cryptozoon

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Roubidoux Chert is associated with the Roubidoux Formation of Missouri.  Primary outcroppings occur in Washington County, Missouri along the Berryman fault and along Roubidoux Creek..