Color:  Ervine Creek Chert ranges from a light medium gray to a dark gray.  Larger white specks are formed by fossils.

Texture:

Luster:

Silica Fabrics / Fossils: Fusuline, coral, bryozoan, brachiopod, mollusk, and echinoid and crinoid fragments.

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Ervine Creek Chert is associated with the Ervine Creek Limestone Member of the Deer Creek Limestone Formation of northeastern Kansas, southeastern Nebraska, southwestern Iowa, and northwestern Missouri.  Primary outcroppings occur along Ervine Creek in Union and Cass counties, Nebraska.