Color:  Aleman Ribbon Chert ranges from a dark gray to white or red.  Chalcedony occurs as veins, bird eye like vugs, and fossil replacement. 

Texture: Fine grain

Luster:

Translucency:  Opaque

Silica Fabrics / Fossils:  Sponge spicules, stromatolites

Patina:

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution Comments:

Aleman Ribbon Chert occurs in dolomite associated with the Aleman Member of the Montoya Formation occurring as beds, lenses, and nodules in southwestern New Mexico and into Texas.