Color:  Augen Gneiss is banded with lighter bands composed of feldspars and quartz and the darker bands composed of hornblende and biotite.  Banding averages 1 to 10 mm wide.

Texture:

Luster:

Translucency: 

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Augen Gneiss occurs throughout North America.