Escabrosa Chert









Natural Form:



Description of Physical Characteristics:

Color:  Escabrosa Chert ranges from a light to dark gray.

Texture:

Luster:

Translucency:

Silica Fabrics / Fossils: Brachiopods, crinoid stems, rugose corals

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Escabrosa Chert is associated with the Keating Member of the Escabrosa Limestone Formation of southeastern Arizona.  Primary outcroppings occur along Escabrosa Ridge, near Bisbee, Arizona.
Projectile point made from this material:



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References: (See Reference Page, Entry Number):

Similar Material:
Commonly made projectile point from this material:
Archaeological Context: