Rio Grande River Chert

Natural Form:

Description of Physical Characteristics:

Color: Rio Grande River Chert has a wide variety of colors with the most common being shades of cream, tan, and brown. Petrified wood and quartzite also occur.

Texture: Medium to fine grain

Luster:

Translucency: Opaque

Silica Fabrics / Fossils:

Patina:

Heat Treatment:

Knapping:

Distribution:

Distribution Comments:
Rio Grande River Gravel Chert occurs as nodules and cobble and is associated with the Rio Grande Gravels and originates from various formations that form the headwaters and valleys of the river in Texas, New Mexico, Chihuahua, and Coahuila.

Projectile point made from this material:

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Archaeological Context: