Irish Rock Chert









Natural Form:



Description of Physical Characteristics:

Color:  Irish Rock Chert is of primarily green, but may range to hues of caramel or red.

Texture: Fine grain

Luster: Vitreous

Translucency: Opaque to translucent

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 

Notes:  Probably the same as Absaroka Chert

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Irish Rock primarily outcrops in the Graybull and Jack Creek watersheds on the Absarokas, Park County, Wyoming.  This is considered a local material.  Named for Irish Rock, Parker County, Wyoming.
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: