Color:  Grayish to dark gray or grayish blue is seen in both the Cad Island Chert and Ramah Chert.  Cod Island Chert may range to yellowish to green gray or deep sea green which is not common in Ramah Chert.  Iron staining and black inclusions may be present.

Texture:  Fine grain

Luster: Dull and waxy

Translucency:  Opaque to semi-translucent in thin flakes.

Silica Fabrics / Fossils:

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Cod Island Chert is associated with the Cod Island Chert Member of the Cod Island Formation, Mugsford Group of Labrador occurring along the shoreline in the Mugsford region of Northern Labrador, Canada  Occurs on Cod Island and Grimmington Island.