Franciscan Chert












Natural Form:



Description of Physical Characteristics:

Color:  Franciscan Chert ranges from brown to reddish brown or yellow brown, white to gray, greenish gray to black.  Generally has reddish or greenish hues.

Texture: 
Fine grain

Luster:

Translucency:  Opaque

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 

Notes:  Wima Chert has many overlapping characteristics of Franciscan Chert.  However, it does not have the luster or quality commonly seen in Franciscan Chert.
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Franciscan Chert is associated with the Franciscan Formation of California. 

 

Projectile point made from this material:



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References: (See Reference Page, Entry Number):

Similar Material:
Wima Chert
Commonly made projectile point from this material:

Archaeological Context: