Montrose Chert
Keokuk Chert Variant





Natural Form:



Description of Physical Characteristics:

Color:  Montrose Chert is a light to medium bluish gray and often resembles a chert breccia.
Texture: 

Luster:

Translucency:

Silica Fabrics / Fossils: Brachiopods

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Montrose Chert is associated with the Montrose Member of the Keokuku Limestone Formation of Iowa.  Primary outcroppings occur around Montrose, Lee County, Iowa. 

 

Projectile point made from this material:



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References: (See Reference Page, Entry Number):

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Commonly made projectile point from this material:
Archaeological Context: