Phosphoria Chert
 Variations: Rex Chert
AKA: Tosi Chert, Big Horn Chert









Natural Form:



Description of Physical Characteristics:

Color:  Phosphoria Chert ranges from colors of red, maroon, purple, orangish red, green, black and white.

Texture:

Luster:

Translucency: Opaque

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping:

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Phosphoria Chert is associated with the Tosi Member of the Phosphoria Formation of northeastern Utah, eastern Idaho, southern Montana, and Wyoming.  Primarily found as nodules in the eastern Big Horn Mountains.
Projectile point made from this material:



Pictures Provided By:
Do you see information that is incorrect on this page, or do you have information that should be added?  If so, please:

Send Us A Message
or e-mail pictures and information to
Material@Projectilepoints.net


Do you see information that is incorrect on this page, or do you have information that should be added?  If so, please:

Send Us A Message
or e-mail
Questions@Projectilepoints.net


References: (See Reference Page, Entry Number):

Similar Material:
Commonly made projectile point from this material:
Archaeological Context: