St. Louis Green Chert
 AKA: St. Louis Formation Chert










Natural Form:



Description of Physical Characteristics:

Color:  St. Louis Green is varying shades from light gray green to yellow green.

Texture:  Fine grain

Luster: Waxy to glassy

Translucency:  Opaque

Silica Fabrics / Fossils: Fossils are uncommon

Patina:

Heat Treatment: Heat treatment darkens the color and increases the luster.

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Named for the St. Louis formation in Upper St. Louis Missouri.  It extends into western Kentucky and into mid-Tennessee.

Projectile point made from this material:




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References: (See Reference Page, Entry Number):

Nellie Blue Chert
Similar Material:
Commonly made projectile point from this material:
Benton Series, Elk River, St. Charles


Archaeological Context: