Color:  Hartville Chert ranges from most commonly colors and hues of yellow, orange, red, brown, and purple.  Black mottling and dendrites are most commonly seen in the brown, yellow and orange colors.  Clear silica lines may be present.  They material that is yellow and red is also called Hartville Jasper.

Texture:  Fine grain

Luster: Waxy to glossy

Translucency:  Opaque

Silica Fabrics / Fossils: Crinoid stems and other fossils.

Patina:

Heat Treatment: 

Knapping:  .
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Hartville Uplift Chert is associated with the Hartville Formation of Wyoming and Nebraska,  Primary sources are in the Hartsville Wyoming in central eastern Wyoming and into northwestern Nebraska.  Sources extend from the Laramie Mountains to the North Platte River and from Guersey to the south and Manville, Wyoming to the north,