Cerro del Medio Obsidian
AKA: Cerro Abrigo, Cerro Rubio, Cerro de los Posos Obsidian, Valles Rhyolite, Valles Grande Obsidian











Natural Form:



Description of Physical Characteristics:

Color:  Cerro del Medio Obsidian is a granular black with brown and black mahogany obsidian primarily occurring on the west slope of Cerro del Medio.
Texture:

Luster:

Translucency:

Silica Fabrics / Fossils: 
Patina:

Heat Treatment:

Knapping:  

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Cerro del Medio Obsidian is associated with the Valles Volcanics, Valles Rhyolite Formation as marekanites / nodules (up to 40 mm) with primary sources around Cerro del Medio and secondary sources extending along San Antonio Creek and East Jemez River as well as the canyons eroding from the caldera rim in the Jemez Mountains, New Mexico.
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:

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