Color: Imnaitchiak Chert ranges in color from light to dark gray, but may range to a bluish or steel gray or greenish gray.  Mottling ranges from maroon to pale green.

Texture: Fine grain

Luster: Dull

Translucency:  Opaque

Silica Fabrics / Fossils:

Patina: 

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Imnaitchiak Chert is associated with the Imnaitchiak Chert Formation (formerly included in the Siksikpuk Formation) of the Etivluk Group of Alaska. Occurs as beds and large nodules with exposures occurring from the Anaktuvuk River of the Endicott Mountains to Wulik Peaks in the Dehng Mountains and in the foothills west of the Killik River and in the central and west central Brooks range.