Color:  Ten Mile Creek chert ranges in color from a dark brownish gray to an olive gray or bluish gray.   

Texture: Fine grain

Luster:

Translucency:

Silica Fabrics / Fossils:  Bryozoans, echinoderms, and ostracods

Patina: The patina is a pale greenish gray to a grayish white.

Heat Treatment: 

Knapping:   

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Ten Mile Chert is associated with the lower levels of the Greene Formation and the upper levels of the Washington Formation of Southwestern Pennsylvania.  Primary outcroppings are located in Ten Mile Creek valley of  Greene County, Pennsylvania.