Color:  Appekunney Argillite ranges from black to a gray or greenish gray with inclusions of white quartzite.

Texture:

Luster:

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 

Notes:  Appekunney Argillite overlies the Grinnell Argillite making differentiation between the two difficult outside the source.  It has been suggested that the two may be the same from one great formation with the only difference being stratification.
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Appekunney Argillite is associated with the Appekunney Formation of the Belt Series of northwestern Montana and southeastern British Columbia.  Primary outcroppings occur in Glacier National Park in Montana, the Appekunney Mountains of Montana and the Lewis and Livingston ranges.