Backbone Ridge Obsidian
AKA: Seaman Gulch, South Forest Camp Obsidian
(Tuscan Volcanic group)
Description of Physical Characteristics:
Color: Backbone
Ridge Obsidian is black with reddish brown streaking and patches and
lighter bands of translucent gray or clear present (mahogany obsidian).
Texture:
Luster:
Translucency:
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Backbone Ridge Obsidian is associated with Tuscan Volcanics and occurs as large nodules along Backbone
Ridge, at Seaman Gulch, and South Forest Camp in Shasta County,
California.
Projectile point made from this material:
Pictures Provided By:
References: (See Reference Page, Entry Number):
Similar Material:
Commonly made projectile point from this material:
Archaeological Context:
