Color:  Texas Oil Chert ranges from black to a mottled dark brown.

Texture: Fine grain

Luster:

Translucency:

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Texas Oil Chert is associated with the Canutillo Limestone formation of the Delaware Basin of West Texas.  Primary exposures occur in San Andres Canyon, San Andres Mountains and have been reported in the Franklin Mountains.