Spotted Ridge Chert












Natural Form:



Description of Physical Characteristics:

Color:  Spotted Ridge Chert is a radiolarian chert with colors of black, green, and red.

Texture:


Luster:

Translucency:

Silica Fabrics / Fossils:  Permian radiolarian faunas

Patina:

Heat Treatment: 

Knapping:  

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Spotted Ridge Chert is associated with the Spotted Ridge Formation of Oregon.  Primary outcroppings occur on Coyote Butte (Three Buttes), and the southern Grindstone Terrance in Deschutes County, Oregon.
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:

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