Upper Rio Grande Jasper / Opal










Natural Form:



Description of Physical Characteristics:

Color:  Upper Rio Grande Jasper is a mottled yellow color with inclusions of varicolored opal.

Texture:  Very fine grain

Luster: Viterious

Translucency: Opaque

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
 Upper Rio Grande Jasper has primary outcroppings in the Upper Rio Grande Valley, Hinsdale County, Colorado.
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: